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TransformsPack - Models.avsi
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TransformsPack - Models.avsi
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###########################################################
### ##
### ##
### Transforms Pack - Models v2.2.1 (19-02-2024) ##
### ##
### https://forum.doom9.org/showthread.php?t=182881 ##
### ##
### by Dogway (Jose Linares) ##
### ##
### MODELS: ##
### RGB_to_YUV / YUV_to_RGB ##
### RGB_to_YcCbcCrc / YcCbcCrc_to_RGB ##
### RGB_to_YUVp / YUVp_to_RGB ##
### YCC_to_YUVp / YUVp_to_YCC ##
### RGB_to_YIQ / YIQ_to_RGB ##
### YCC_to_YIQ / YIQ_to_YCC ##
### RGB_to_YCoCg / YCoCg_to_RGB ##
### RGB_to_YCoCgR / YCoCgR_to_RGB ##
### RGB_to_YUVr / YUVr_to_RGB ##
### RGB_to_OPP / OPP_to_RGB ##
### XYZ_to_Yxy / Yxy_to_XYZ ##
### XYZ_to_YDzDx / YDzDx_to_XYZ ##
### XYZ_to_Lab / Lab_to_XYZ ##
### XYZ_to_Luv / Luv_to_XYZ ##
### XYZ_to_XYB / XYB_to_XYZ ##
### RGB_to_HSV / HSV_to_RGB ##
### RGB_to_IPT / IPT_to_RGB ##
### RGB_to_ICtCp / ICtCp_to_RGB ##
### RGB_to_Oklab / Oklab_to_RGB ##
### RGB_to_XYZ / XYZ_to_RGB ##
### XYZ_to_LMS / LMS_to_XYZ ##
### ADAPTATION: ##
### GamutCompression ##
### CAT ##
### CMF ##
### SPD_D ##
### CIE1931_Locus ##
### Chromaticity_xy ##
### ##
###########################################################
##########################################
### ##
### MODEL CONVERSION FUNCTIONS ##
### ##
##########################################
# List of Color Spaces:
#
# Color Spaces define the size and shape of our source color gamut container in the unitary XYZ coordinates cube. In other words, a color space conversion doesn't change the size (saturation), quantity (interpolation in HBD) or shape (gamut mapping) of our fruits (gamut), but the basket that holds them.
# Color Spaces are presented normally as a 3x3 matrix of their color primaries represented in the CIE 1931 diagram coordinates. This might be ok but be aware this is an over-simplification as color spaces are actually 3D volumes within the unitary XYZ cube, and part of them may actually fall outside the CIE 1931 color space which represents all the physically plausible colors.
#
# There are several types of Color Spaces defined by their role:
# Characterization spaces are normally used to represent device gamuts for profiling on a unit-to-unit basis.
# Standard spaces define a standard to comply with for delivery, normally they are derived from averaging measurements of real unit-by-unit devices defined by their used phosphors.
# Finally working spaces don't need to be attached to any physical constraints so they can be as big as the CIE 1931 color space (some actually bigger than that), so they are suited for heavy color transformations without much degradation in the process. They can also be geared towards certain effects like getting more color resolution in certain HUEs for exposing better shades in color grading tasks. Ultimately everything is being transformed into your viewing transform color space in real time so use any working space that suits your job.
#
#-470M - (Historical) ITU-R Rec. BT.470 M. Also known as FCC or NTSC (1953) with C illuminant and 170M OETF.
#-470BG - ITU-R Rec. BT.1700 (or legacy ITU-R Rec. BT.601) (625-line = PAL, SECAM).
#-170M - ITU-R Rec. BT.1700 (or legacy ITU-R Rec. BT.601) (525-line = NTSC, SMPTE-C) (originally defined in "CCIR Recommendation 601-1 (1982-1986)").
#-240M - SMPTE 240M.
#-NTSC-J - ARIB TR-B9. Phosphor primaries used in Japan's consumer CRTs along 9300K + 27 MPCD illuminant.
#-sRGB - IEC 61966-2-1. Jointly developed by Microsoft and Hewlett-Packard as a color standard designed primarily for office, home and web users. Comprises Primaries -derived from phosphors of calibrated consumer CRTs of the 90s-, Illuminant and Transfer Characteristics.
# scRGB - IEC 61966-2-2. Extended RGB. The scRGB colour space is an extension of sRGB and it is considered compatible with sRGB, designed to provide high bit precision, large colour gamut and extended dynamic range that is linear with respect to scene radiance.
#-AdobeRGB - IEC 61966-2-5:1999. Also known as opRGB (optional RGB). Designed to encompass most printers' gamuts and to be used as a working space in Photoshop, ideally at 16-bit. It's basically the 470BG primaries with greens from 470M allegedly after a sucessions of mistakes.
#-Adobe Wide Gamut - Adobe second and final wide gamut version of AdobeRGB with same transfer but in D50 illuminant.
#-DCI-P3 - SMPTE RP 432-2. Digital Cinema.
#-Display-P3/P3-D65 - SMPTE RP 432-1. Display-P3 is Apple's take on P3, same DCI-P3 primaries but with D65 illuminant and sRGB TRC. P3-D65 instead uses PQ for HDR and 1886 for SDR.
#-2020 - ITU-R Rec. BT.2020.
#-AP0 - ACES AP0 coefficients used for ACES2065 color space.
#-AP1 - ACES AP1 coefficients used for ACEScg color space.
#-S-Gamut - Sony Gamut
# S-Gamut3 - Sony Gamut 3
# S-Gamut3 (Venice) - Sony Gamut Cinema 3 Venice
#-S-Gamut3.Cine - Sony Gamut Cinema 3. A little over DCI-P3 gamut in size, paired with S-Log3 it reproduces a scanned negative film.
# S-Gamut3.Cine (Venice) - Sony Gamut Cinema 3 Venice
#-Cinema Gamut - Canon Cinema Gamut (D65)
# CinemaDay - Canon Cinema Gamut Daylight (5500K).
# CinemaTungsten - Canon Cinema Gamut Tungsten (3200K).
#-CanonP3 - Canon DCI-P3+. Expanded DCI-P3 gamut from a compressed version of Canon Cinema Gamut
# D-Gamut - DJI D-Gamut.
# D-GamutM - DJI D-GamutM.
# DragonColor - RED DragonColor
# DragonColor2 - RED DragonColor2
# REDColor -
# REDColor2 -
# REDColor3 -
# REDColor4 -
# REDWide - RED Wide Gamut RGB.
# Protune - GoPro Protune Native.
# Bolex - Bolex Wide Gamut RGB.
# DaVinci Wide Gamut -
# Almira709 -
# LC709 -
# LC709A -
# s709 -
# Cine709 - Sony Cine+709.
# ADX10 -
# ADX16 -
# BMD Wide Gamut - BlackMagic Design Wide Gamut
# BMP 6k Film - BlackMagic Pocket 6K Film
# BMD Film - (Legacy)
# BMD Broadcast Video - (Legacy)
# BMD Broadcast Film - (Legacy)
# BMD 4K Film - (Legacy)
# BMD 4K Film V3 - (Legacy)
# BMD 4K Video V3 - (Legacy)
# BMD 4.6K Film - (Legacy)
# BMD 4.6K Film v3 - (Legacy)
# BMD 4.6K Video - (Legacy)
# BMD 4.6K Video v3 - (Legacy)
# Alexa - Arri (Alexa) Wide Gamut.
# Film - Arri Film Matrix. Traditional film primaries with Illuminant C.
#-FS-Gamut - SMPTE Free Scale Gamut for imagery having arbitrary chromaticity that can be conveyed, inherited from Sony's F23, F35, and F65 Wide Gamut cameras. (ST 2048-1).
# V-Gamut - Panasonic V-Gamut (Varicam).
# V709 - Panasonic Varicam V709.
# F-Log - Fujifilm F-Log Gamut.
# Barco Unisee -
#-ProPhoto RGB - RIMM/ROMM RGB by Kodak to encompass all printable and most real world colors. D50 with Apple gamma. ERIMM RGB is geared towards HDR.
#-Wide Gamut RGB - Adobe first wide gamut version with D50, and AdobeRGB gamma (2.19921875). Designed by Adobe to be a wide gamut color space that uses spectral colors as its primaries.
#-AllColorsRGB - Developed by Ellen Stone to encompass all colors, slightly wider than AP0. Defined with linear transfer at D50 and prims: 0.734690265, 0.265309735, 0.17451, 0.005182, 0.0, -0.07585421971554103213.
#-MaxRGB - Developed by Don Hutcheson. "If you can accept 'illegal' colors (outside the CIEYxy limits) then try the outrageously saturated gamut of MaxRGB. Not that you gain anything useful, but at least you can say you have an even bigger Photoshop-style tri-coordinate RGB working space than ProPhoto RGB!"
#-xTremeRGB - Developed by Don Hutcheson. "XtremeRGB pushes Photoshop (tri-coordinate 3x3 matrix) color spaces rules to the absolute limit, producing the world's largest possible Photoshop-legal tricoordinate RGB space. However it does so at extreme risk and is provided here as a curiosity more than a useful tool. Only use XtremeRGB on 16 bit-per-channel (or higher) images."
#-CIE RGB - or CIE 1931 RGB in linear space (sometimes over generic gamma of 2.2) and E illuminant.
#-Apple RGB - RGB color space by Apple derived from Sony Trinitron phosphors, similar in gamut size to sRGB or ColorMatch. Employs a gamma of 1.8.
#-ColorMatch RGB - Radius PressView Monitors with D50 and a power gamma of 1.8.
#-EBU Tech. 3213-E - EBU Tech. 3213-E / JEDEC P22 phosphors. Legacy EBU Tech 3213 (later 470BG) (625-line = PAL, SECAM).
#-Bruce RGB - Developed by Bruce Fraser as a conservative-gamut space for dealing with 8-bit imagery that needs heavy editing. Early and modest gamut that made into one of the SWOP printing standards in the U.S.
#-DonRGB4 - Developed by Don Hutcheson in 1996. Wide gamut working space for photography, prepress, etc. 2.2 pure power gamma.
#-BestRGB - Developed by Don Hutcheson. Improved DonRGB4 for saturated reds and magentas. 2.2 pure power gamma.
#-Beta RGB - Developed by Bruce Lindbloom. An optimized capture, archiving and editing space for high-end digital imaging applications, modeled after famous photographic films like Fuji, Agfa or Kodak. 2.2 pure power gamma.
#-Russell RGB - Developed by Russell Cottrell. An extension of Beta RGB for cyans and blues to encompass some printers' gamuts. Uses D55 illuminant in 2.2 power gamma.
#-ECI-RGB v2 - Developed by the European Color Initiative <www.eci.org>. Employs the L* gamma transfer.
#-Ekta Space PS5 - Developed by Joseph Holmes for high quality storage of image data from scans of transparencies (aka chromes), mostly for positives but works fine also for negative film. 2.2 pure power gamma.
#-Chrome Space 100 - Developed by Joseph Holmes. Refined 2005 version of Ekta Space PS5, conserving primaries and illuminant but with a different gamma, designed to match the tonality of a perceptually linear greyscale for printers.
# DCam Sets - Developed by Joseph Holmes. 5 color spaces designed for digital cameras, they also use Chrome Space 100 tone curve.
# And many more oldies not included here for simplicity: P22 (Measured SMPTE-C), EBU measured, Conrac 7211N19, Hitachi, Barco, Tektronics, SGI Trinitron, Sony Trinitron KV-20M20.
# List of Color Models:
# Color Models -not to be confused with Color Spaces- describe the geometry coordinates of the color gamut container and hence its relation (or correlation) with the other channels. They are typically designed or tailored to certain Color Spaces, but not necessarily bound to them, like RGB or YCbCr which support many different Color Spaces and thus are nicked Color Absolute Models.
# Color Spaces comprises Primaries and an associated Illuminant. It is also common to be associated with a transfer function although its relationship is not as strict (as it depends on viewing conditions).
#
# UCS: Uniform Color Space. Space (model) in which equal distances on the coordinate diagram correspond to equal perceived color differences.
# With *: Color Appearance Models (CAM) (Perceptually Uniform -UCS- to various degrees)
# With +: HDR aware
# With -: Implemented
#
# CMYK - Color model used in print industry.
#-RGB+ - RGB color model for channels Red, Green, and Blue. Normally found in interleaved packing format. AviSynth works best with planar RGB so a conversion is first needed.
#-OPP - by Liang et al. RGB opponent space.
# NOPP - by Liang et al.
# COPP - by Liang et al.
# rg - Photometric invariant (shadows, shading) 2 channel color representation, by Danelljan [R/(R+G+B), G/(R+G+B)]
# I1I2I3 - by Guo and Lyu [0.3333*(R+G+B),0.5*(R-B),0.25*(2G-R-B)]
# C1C2C3 - by Salvador et al.
# LSLM - RGB opponent space based on the signals of the cones: black-white, red-green, and yellow-blue.
# YES - by Saber et al.
# UVW - by Ohta et al.
# SO - Biologically Inspired Color Image Descriptor.
# c1c2c4 - Biologically Inspired Color Image Descriptor.
# o1o2 - For Robust Image Detection in Scenes under Cast Shadows. https://digital.csic.es/bitstream/10261/30099/1/Combining%20color-based.pdf
#-YPbPr - A model for analogue signals. Has no definition for the SMPTE range so saturates full range. Roughly based on human perception of luma and chroma contribution (approximately perceptually uniform). Uses 3 planes for Luma, opposing blue-yellow, and opposing red-green. It's a 45º skewed parallelogram relative to the square RGB box, therefore only 23.6% of its color volume matches RGB and 76.4% is out of RGB gamut.
#-YCbCr - YPbPr scaled to SMPTE legal range ((16,128,128) + (219*Y,224*Pb,224*Pr)). Format used for digital systems.
#-YUV - Decorrelated Opponent color model for analogue system used in PAL territories and NTSC since 1979.
#-YIQ - YUV with UV axes rotated 33º, used for old FCC 1953 NTSC TV analogue systems until about 1979. Quote from avisynth.nl/index.php/Tweak: "In YIQ, orange and teal are along the in-phase (I) axis, while green and magenta are along the quadrature (Q) axis. The eye is far more sensitive to detail along the I axis than along the Q axis, and NTSC allocated more bandwidth for I than for Q."
# YDbDr - PAL-N and SECAM TV analogue format.
#-YUVr - "YUV RCT". Same as YCbCr but fully reversible to RGB.
# sYUV - "Sharp YUV". Same as YCbCr but luma-weighted chroma subsampling, retaining chroma fidelity.
#-YcCbcCrc - YCbCr Constant Luminance (CL). Better decorrelation than YCbCr.
# xvYCC - Expanded Gamut YCbCr. For newer TV systems it is/was a model that allowed the color gamut (typically Rec709) to be stored in the full range while luma in the narrow range.
#-YCoCg - Better luma/chroma decorrelation and compression efficiency than YCbCr.
#-YCoCgR - Same as YCoCg but losslessly reversible to RGB.
# YFbFr - Similar to YCoCg, employs Karhunen-Loève transform (KLT) to design an integer reversible transform.
# Yrg - Truelight Yrg model, described in "Chromaticity Coordinates for Graphic Arts Based on CIE 2006 LMS with Even Spacing of Munsell Colours" by Richard Kirk
#-XYZ - CIE 1931 XYZ tristimulus color model representing all the non-imaginary colors.
# LSY - Reads lambda-SY. Spectral color space. Representation based on brightness, dominant wavelength and saturation attributes. LSY color coordinates are defined from xyY color coordinates.
#-YDzDx+ - HDR version of XYZ. Requires at least 10-bit for no visible quantization.
# YCxCz - Color Space for image fidelity metrics. It's a first step space, you have to "filter" it and then convert to Lab to retrieve error delta.
#-DCI XYZ - XYZ space in DCI illuminant. In effect it's just a container for DCI-P3 in XYZ coordinates for delivery to theaters.
#-Yxy/xyY - Chroma normalized XYZ space which gives full luma/chroma decorrelation. Not apt for HDR, use YDzDx+ instead.
#-HSV - Cylindrical representation of RGB. Not recommended as it doesn't take into account human luminance perception.
#-Duv* - Perceptual based model which measures the closest distance from the Planckian locus on the CIE 1976 (u', 2/3 v') diagram. Some color spaces and Delta metrics are computed in this model which is an update of the CIE 1960 UCS chromaticity diagram. A white point defined in Duv coordinates is called a "color tint".
# HunterLab* - A more perceptually uniform version of CIELab.
#-CIELab* - Derived from CIE XYZ, one of the first approaches to a perceptually uniform color model. CIELch(ab) is its cylindrical (polar coordinates) version. You can derive it's Delta E with the next equation: DE = (DL^2 + Da^2 + Db^2)/2 = ( (Ly-Lx)^2 + (ay-ax)^2 + (by-bx)^2)/2.
# CIEsLab* - CIE simple Lab.
# R-Lab* - Ruderman Lab space, using log luma and different weights for ab.
# L-Lab* -
# SRLab2* - A 2009 modification of CIELab by Jan Behrens in the spirit of RLAB. Uses CIECAM02 chromatic adaptation matrix to fix the blue hue issue but keeps CIELab transfer.
#-CIELuv* - CIE 1976. Derived from CIE 1964 UVW, a competing perceptually uniform color model of CIELab around the same time the latter appeared. CIELuv uses a Judd-type CAT, while CIELab uses "wrong" von-Kries (XYZ Scaling).
# CIELch(uv)*- HCL (polar coordinates or cylindrical) version of CIELuv.
# HSLuv* - A cylindrical HSL type adaptation of CIELuv. It extends CIELuv with a new saturation component that allows you to span all the available chroma as a neat percentage.
# LogLuv*+ - HDR version of CIELuv, that uses log to encode HDR values in a 15-bit container.
# Y''U''V''*+ - HDR version of CIELuv by Charles Poynton. Improves on LogLuv by using a PQ transfer which just needs 12-bits.
# CIEDuDv*+ - or YDuDv. HDR version of CIE Luv. Requires only 8-bit for no visible quantization.
# CIECAM97s* -
#-XYB* - Uniform (UCS) space used in Guetzli's butteraugli metric and JPEG-XL, with a main goal in compression. Better uniformity than CIE Lab but not as good as IPT.
# DIN99o* - Color space based on CIE Lab for which main characteristic is to show comparable accuracy to CIEDE2000 but with a simple Euclidean distance.
# JzAzBz*+ - A 2017 uniform (UCS) space designed for HDR color. Has J (lightness) and two chromaticities. JzCzhz is the HCL (polar coordinates or cylindrical) version of JzAzBz.
#-IPT* - Intensity Protanope Tritanope. A more uniform color space in SDR colors. There's a version called hdrIPT.
# IgPgTg - Based on IPT but optimized using gaussian spectra to derive a hue-linear color space.
# ICaCb+ - Precursor and arguably better color model than ICtCp which based on this.
#-ICtCp+ - BT.2100 (HDR + Rec.2020) version of IPT. HDR version of YcCbcCrc but with Constant Intensity this time.
# ITP*+ - Perceptually uniform color space version of ICtCp, used extensively in error metrics by scaling Ct by 0.5. This transformation is the basis of the Rec.2124 wide gamut color difference metric D.itp (simple scaled Euclidean distance: 720*sqrt(Di^2+D(t*0.5)^2+Dp^2) )
#-IPTPQc2*+ - Improved HDR10 version of ICtCp. Since it's a Dolby's propietary model all that is known is by means of reverse engineering.
# CIECAM02* - Improves on CIECAM97s and can be made uniform with CAM02-UCS. CIECAM02Jch is its cylindrical version.
# OSA* -
# CIECAM16* - Improves on CIECAM02 and can be made uniform with CAM16-UCS, which works "out-of-the-box" for Euclidean distance metrics.
# CAM20u - Improvement over CIECAM16 for predicting the color appearance of unrelated colors.
# ZCAM*+ - A uniform (UCS) space for HDR color.
#-Oklab* - A uniform (UCS) space for SDR color. Simple to compute yet powerful. Takes CAM16 lightness and chroma, and IPT for hue. OkLch is the cylindrical form of Oklab.
# DT UCS22* - The darktable UCS 22 is a perceptually uniform color space designed from psychoperceptual experimental data specifically for the purpose of artistic saturation changes, as performed in the color balance RGB module. It uses a brightness-saturation scheme that compensates for the Helmholtz-Kohlraush effect. https://eng.aurelienpierre.com/2022/02/color-saturation-control-for-the-21th-century
# iCAM06 - An image (not only color) appearance metric model to not only compute perceived difference in lightness, hue or chroma, but also contrast, sharpness or graininess. Involves converting to IPT, low-pass filtering in linear space, convert to non-linearity, then to Jch model and QM if necessary for the metrics.
# Hellwig2022 - Hellwig and Fairchild (2022) CAM
# Others not included: RLAB, Nayatani, LLAB, Kim, Weyrich and Kautz (2009)
# YCbCr to RGB' standalone function (at least 10-bit precision recommended)
function YUV_to_RGB (clip yuv, string "matrix", bool "tv_in", bool "tv_out", string "kernel", float "b", float "c", float "p", string "cplace", bool "UVrecon") {
matrix = Default (matrix, "709")
bi = BitsPerComponent(yuv)
fs = propNumElements (yuv,"_ColorRange") > 0 ? \
propGetInt (yuv,"_ColorRange") == 0 : (matrix=="JPEG" || matrix=="JPG")
kernel = Default (kernel, "CatRom") # Catmull-Rom. Curiously enough the kernel doesn't make a big difference when going to RGB, be it spline36, bicubics, etc.
tv_in = Default (tv_in, !fs)
tv_out = Default (tv_out, false)
cplace = Default (cplace, "")
recon = Default (UVrecon, false)
b = Default (b, 0.0) # Bicubic 'b' coefficient, or 'taps' for sinc kernels
c = Default (c, 0.5) # Catmull-Rom
p = Default (p, 9)
Assert(IsVersionOrGreater(3,7,2), "YUV_to_RGB: Update AviSynth+ version")
Assert(!isRGB(yuv), "YUV_to_RGB: Only YUV format supported")
p_type = format_Fuzzy_Search(yuv, PixelType(yuv), bi)
matrix = color_Fuzzy_Search (matrix)
coef = color_coef(mat=matrix[0])
bc = bicubic_coeffs(kernel)
bc_b = string(bc[0]>-2?bc[0]:b)
bc_c = string(bc[0]>-2?bc[1]:c)
kernel = bc[0]>-2 ? "Bicubic" : LCase(kernel)
p_type4 = p_type[1] == "444"
p_type2 = p_type[1] == "422"
p_type1 = p_type[1] == "411"
p_type0 = p_type[1] == "420"
p_type10 = p_type[1] == "410"
w = width (yuv)
h = height(yuv)
nw = p_type4 ? w : p_type1 || p_type10 ? round(w/4.0) : round(w/2.0)
nh = p_type4 || p_type1 || p_type2 ? h : round(h/2.0)
cplace = chroma_placement(w, h, w, h, matrix[0], matrix[0], "YUV"+p_type[1], "RGB", p_type[1], "444", cplace, "center" )
p_type1 ? Assert(bi == 8, "YUV_to_RGB: Unsupported Pixel Type: HBD YUV411") : nop()
Assert(!p_type10, "YUV_to_RGB: Unsupported Pixel Type: YUV410")
cplaceH = ",src_left="+string(cplace[0])
cplaceV = ",src_top ="+string(cplace[1])
resampler = FindStr(kernel, "lanczos")>0 && kernel!="lanczos4" || FindStr(kernel, "blackman")>0 || FindStr(kernel, "sinc")>0 ? \
kernel + "Resize(" + String(w) + "," + String(h) + cplaceH + cplaceV +",taps= int("+bc_b+"))": \
kernel == "nnedi3" ? "nnedi3resize(" + String(w) + "," + String(h) + ")" : \
kernel == "bicubic"? "BicubicResize(" + String(w) + "," + String(h) + cplaceH + cplaceV +",b="+bc_b+",c="+bc_c+")" : \
kernel == "gauss" ? "GaussResize(" + String(w) + "," + String(h) + cplaceH + cplaceV +",p=p)" : \
kernel + "Resize(" + String(w) + "," + String(h) + cplaceH + cplaceV +")"
Y = ExtractY(yuv)
Uor = ExtractU(yuv)
Vor = ExtractV(yuv)
# feisty2's ChromaReconstructor_faster v3.0 HBD mod
if (recon && !p_type4) {
ref = Y.KNLMeansCL(0, 12, 0, 31.078131515593690, wref=1)
Luma = ref.nnedi3wrap( 2, nns=1, qual=1, etype=1, nsize=0, HBD=false, gpuid=0)
Uu = Uor.nnedi3wrap(p_type1||p_type10?8:4, p_type10?8:4, nns=1, qual=1, etype=1, nsize=0, HBD=false, gpuid=0)
Vu = Vor.nnedi3wrap(p_type1||p_type10?8:4, p_type10?8:4, nns=1, qual=1, etype=1, nsize=0, HBD=false, gpuid=0)
Unew = Uu.KNLMeansCL(0, 12, 0, 9, wref=0, rclip=Luma).BicubicResize(w, h, b=0.0, c=0.5, src_left=cplace[0], src_top=cplace[1])
Vnew = Vu.KNLMeansCL(0, 12, 0, 9, wref=0, rclip=Luma).BicubicResize(w, h, b=0.0, c=0.5, src_left=cplace[0], src_top=cplace[1])
U = ex_makeadddiff(Unew, ex_boxblur(Unew), Uu.BicubicResize(w, h, b=0.0, c=0.5, src_left=cplace[0], src_top=cplace[1]))
V = ex_makeadddiff(Vnew, ex_boxblur(Vnew), Vu.BicubicResize(w, h, b=0.0, c=0.5, src_left=cplace[0], src_top=cplace[1]))
} else {
U = p_type4 ? Uor : Eval("Uor." + resampler)
V = p_type4 ? Vor : Eval("Vor." + resampler)
}
if (matrix[0]=="2020CL" || matrix[0]=="DCI-P3" || matrix[0]=="Display-P3") {
Assert(false, "YUV_to_RGB: Use YcCbcCrc_to_RGB() function")
} else {
scale_y = tv_in != tv_out ? tv_in ? 256/219. : 219/256. : 1.0
scale_uv = tv_in != tv_out ? tv_in ? 256/112. : 224/128. : 2.0
Kr = 1. - coef[0]
Kb = 1. - coef[2]
m0 = scale_y m2 = scale_uv * Kr
m4 = scale_uv * ( -Kb * coef[2] / coef[1]) m5 = scale_uv * ( -Kr * coef[0] / coef[1])
m7 = scale_uv * Kb
range_PC = scale_y == 256/219. ? "ymin - " : ""
range_TV = scale_y == 219/256. ? "ymin + " : ""
UVf = bi < 32 ? "range_half - " : ""
Expr(Y, U, V, ex_dlut("x "+range_PC+" "+string(m0)+" * "+range_TV+" z "+UVf + string(m2)+" * + ", bi, false), \
ex_dlut("x "+range_PC+" "+string(m0)+" * "+range_TV+" y "+UVf + string(m4)+" * + z "+UVf + string(m5)+" * + ", bi, false), \
ex_dlut("x "+range_PC+" "+string(m0)+" * "+range_TV+" y "+UVf + string(m7)+" * + ", bi, false), optSingleMode=true, format=bi>16?"RGBPS":"RGBP"+string(bi))
}
tv_in!=tv_out ? propSet("_ColorRange", tv_out ? 1 : 0) : last
propSet("_Matrix", 0)
propSet("_Model", 1) }
# RGB' to YCbCr standalone function (at least 10-bit precision recommended)
function RGB_to_YUV (clip rgb, string "matrix", bool "tv_in", bool "tv_out", string "Jab", string "kernel", float "b", float "c", float "p", string "cplace") {
bi = BitsPerComponent(rgb)
fs = propNumElements (rgb,"_ColorRange") > 0 ? \
propGetInt (rgb,"_ColorRange") == 0 : true
matrix = Default (matrix, "709")
p_type = Default (Jab, "420") # target YUV chroma subsampling
kernel = Default (kernel, "Didee")
tv_in = Default (tv_in, !fs)
tv_out = Default (tv_out, true)
cplace = Default (cplace, "")
b = Default (b, -0.5)
c = Default (c, 0.25) # Didée's Bicubic
p = Default (p, 9)
Assert(IsVersionOrGreater(3,7,2), "RGB_to_YUV: Update AviSynth+ version")
Assert(isRGB(rgb) && IsPlanar(rgb), "RGB_to_YUV: Only Planar RGB format supported")
p_type = format_Fuzzy_Search (rgb, p_type, bi)
matrix = color_Fuzzy_Search (matrix)
coef = color_coef(mat=matrix[0])
bc = bicubic_coeffs(kernel)
bc_b = string(bc[0]>-2?bc[0]:b)
bc_c = string(bc[0]>-2?bc[1]:c)
kernel = bc[0]>-2 ? "Bicubic" : LCase(kernel)
p_type4 = p_type[1] == "444"
p_type2 = p_type[1] == "422"
p_type1 = p_type[1] == "411"
p_type10 = p_type[1] == "410"
w = width (rgb)
h = height(rgb)
nw = p_type4 ? w : p_type1 || p_type10 ? round(w/4.0) : round(w/2.0)
nh = p_type4 || p_type1 || p_type2 ? h : round(h/2.0)
cplace = chroma_placement(w, h, w, h, matrix[0], matrix[0], "RGB", "YUV"+p_type[1], "444", p_type[1], "center", cplace )
p_type1 ? Assert(bi == 8, "RGB_to_YUV: Unsupported Pixel Type: HBD YUV411") : nop()
Assert(!p_type10, "RGB_to_YUV: Unsupported Pixel Type: YUV410")
Assert(h%2==0, "RGB_to_YUV: Height is not mod2" )
!p_type1 || !p_type4 ? Assert(w%2==0, "RGB_to_YUV: Width is not mod2" ) : nop()
p_type1 ? Assert(w%4==0, "RGB_to_YUV: Width is not mod4" ) : nop()
Rx = ExtractR(rgb)
Gx = ExtractG(rgb)
Bx = ExtractB(rgb)
if (matrix[0]=="2020CL" || matrix[0]=="DCI-P3" || matrix[0]=="Display-P3") {
Assert(false, "RGB_to_YUV: Use RGB_to_YcCbcCrc() function")
} else {
scale_y = tv_in != tv_out ? tv_in ? 256/219. : 219/256. : 1.0
scale_uv = tv_in != tv_out ? tv_in ? 256/112. : 112/256. : 0.5
Kr = 1. - coef[0]
Kb = 1. - coef[2]
m0 = scale_y * coef[0] m1 = scale_y * coef[1] m2 = scale_y * coef[2]
m3 = scale_uv * (-coef[0] / Kb) m4 = scale_uv * (-coef[1] / Kb) m5 = scale_uv
m7 = scale_uv * (-coef[1] / Kr) m8 = scale_uv * (-coef[2] / Kr)
rangeY_TV = scale_y ==219/256. ? "ymin +" : \
scale_y ==256/219. ? "ymin -" : ""
rangeC_TV = bi < 32 ? "range_half +" : ""
Y = ex_dlut("x "+string(m0)+" * y "+string(m1)+" * + z "+string(m2)+" * + "+rangeY_TV+"", bi, false)
Cb = ex_dlut("x "+string(m3)+" * y "+string(m4)+" * + z "+string(m5)+" * + "+rangeC_TV+"", bi, false)
Cr = ex_dlut("x "+string(m5)+" * y "+string(m7)+" * + z "+string(m8)+" * + "+rangeC_TV+"", bi, false)
}
if (p_type4) {
Expr(Rx, Gx, Bx, Y, Cb, Cr, optSingleMode=true, format=bi>16?"YUV444PS":"YUV444P"+string(bi))
} else {
Y = Expr(Rx, Gx, Bx, Y, optSingleMode=true)
Cb = Expr(Rx, Gx, Bx, Cb, optSingleMode=true)
Cr = Expr(Rx, Gx, Bx, Cr, optSingleMode=true)
cplaceH = ",src_left="+string(cplace[0])
cplaceV = ",src_top ="+string(cplace[1])
# Although not optimal, technically YUV420 accepts odd size chroma planes
resampler = FindStr(kernel, "lanczos")>0 && kernel!="lanczos4" || FindStr(kernel, "blackman")>0 || FindStr(kernel, "sinc")>0 ? \
kernel + "Resize(" + String(nw) + "," + String(nh) + cplaceH + cplaceV +",taps= int("+bc_b+"))": \
kernel == "nnedi3" ? "nnedi3resize(" + String(nw) + "," + String(nh) + ")" : \
kernel == "bicubic"? "BicubicResize(" + String(nw) + "," + String(nh) + cplaceH + cplaceV +",b="+bc_b+",c="+bc_c+")" : \
kernel == "gauss" ? "GaussResize(" + String(nw) + "," + String(nh) + cplaceH + cplaceV +",p=p)" : \
kernel + "Resize(" + String(nw) + "," + String(nh) + cplaceH + cplaceV +")"
Cb = p_type4 ? Cb : Eval("Cb." + resampler)
Cr = p_type4 ? Cr : Eval("Cr." + resampler)
CombinePlanes(Y, Cb, Cr, planes="YUV", pixel_type="YUV"+p_type[1]+p_type[2])
}
tv_in!=tv_out ? propSet("_ColorRange", tv_out ? 1 : 0) : last
propSet("_Matrix", matrix[3])
propSet("_Model", 5 ) }
# RGB' to YcCbcCrc 444 function (for Rec.2020CL)
function RGB_to_YcCbcCrc (clip RGB, clip "Gx", clip "Bx", string "matrix", string "EOTFi", float_array "coef", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(RGB)
bi = BitsPerComponent(RGB)
fs = propNumElements (RGB,"_ColorRange") > 0 ? \
propGetInt (RGB,"_ColorRange") == 0 : true
tr = propNumElements (RGB,"_Transfer") > 0 ? \
propGetInt (RGB,"_Transfer") == 8 : false
lut = bi > 12 || isRunTime(RGB,!isy) ? 0 : 2
mat = Default (matrix, "709")
trc = Default (EOTFi, "1886")
coef = Default (coef, color_coef(mat=mat))
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, false)
arc = Default (Array, isy)
trcl = tr ? "linear" : trc
mat = color_Fuzzy_Search(mat)
s_gam = moncurve_coef(trc) # some values are getting crushed in the Rec709 transfer
bi32 = bi == 32 ? "" : "range_half +"
rangeC_PC = tvi ? "range_half - range_max cmax cmin - / * range_half + " : ""
rangeC_TV = tvo ? "range_half + cmax cmin - range_max / * cmin + " : bi32
clp = !isy ? ExtractClip(RGB) : nop()
R = !isy ? clp[0] : RGB
B = !isy ? clp[2] : Bx
clp = !isy ? CCTF(RGB, trcl, true, tvi, false).ExtractClip() : nop()
Rln = !isy ? clp[0] : CCTF(RGB, trcl, true, tvi, false)
Gln = !isy ? clp[1] : CCTF(Gx, trcl, true, tvi, false)
Bln = !isy ? clp[2] : CCTF(Bx, trcl, true, tvi, false)
ca = 1.0 + s_gam[1]
cb = 1.0 / s_gam[0]
Pb = 1 / (2. * (ca*(1.0 - pow(coef[2], cb))))
Pr = 1 / (2. * (ca*(1.0 - pow(coef[0], cb))))
Nb = 1 / (-2. * (ca*(1.0 - pow(coef[0] + coef[1], cb)) - 1.0))
Nr = 1 / (-2. * (ca*(1.0 - pow(coef[1] + coef[2], cb)) - 1.0))
Y = Expr(Rln, Gln, Bln, "x "+string(coef[0])+" * y "+string(coef[1])+" * + z "+string(coef[2])+" * + ")
Yx = CCTF(Y, trc, false, false, false).propSet("_Matrix", mat[3]).propSet("_Model", 11)
Cbc = Expr(B, Yx, ex_dlut(Format("x "+rangeC_PC+" y - A@ 0 <= A {Nb} * A {Pb} * ? "+rangeC_TV+" "), bi, true), lut=lut)
Crc = Expr(R, Yx, ex_dlut(Format("x "+rangeC_PC+" y - A@ 0 <= A {Nr} * A {Pr} * ? "+rangeC_TV+" "), bi, true), lut=lut)
Yc = !tvo ? Yx : CCTF(Y, trc, false, false, true)
arc ? [Yc, Cbc, Crc] : CombinePlanes(Yc, Cbc, Crc, planes="YUV") }
# WIP. YcCbcCrc 444 to RGB' function (for Rec.2020CL)
function YcCbcCrc_to_RGB (clip YUV, clip "Cb", clip "Cr", string "matrix", string "EOTFi", float_array "coef", string "kernel", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(YUV)
bi = BitsPerComponent(YUV)
fs = propNumElements (YUV,"_ColorRange") > 0 ? \
propGetInt (YUV,"_ColorRange") == 0 : false
tr = propNumElements (YUV,"_Transfer") > 0 ? \
propGetInt (YUV,"_Transfer") == 8 : false
lut = bi > 12 || isRunTime(YUV,false) ? 0 : 2
mat = Default (matrix, "709")
trc = Default (EOTFi, "1886")
knn = Default (kernel, "CatRom")
coef = Default (coef, color_coef(mat=mat))
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, false)
arc = Default (Array, isy)
trcl = tr ? "linear" : trc
mat = color_Fuzzy_Search(mat)
Y444 = ConvertFormat(YUV,1,1,fmt_out="444",kernel_c=knn,tv_in=tvi,tv_out=tvi)
clp = !isy ? ExtractClip(Y444) : nop()
Y = !isy ? clp[0] : YUV
Cb = !isy ? clp[1] : Cb # Need to scale up
Cr = !isy ? clp[2] : Cr
bi32m = bi == 32 ? "" : "range_half -"
bi32p = bi == 32 ? "" : "range_half +"
rangeC_PC = tvi ? ""+bi32m+" range_max cmax cmin - / *" : bi32m
s_gam = moncurve_coef(trc)
a = 1.0 + s_gam[1]
b = 1.0 / s_gam[0]
Pb = 2. * (a*(1.0 - pow(coef[2], b)))
Pr = 2. * (a*(1.0 - pow(coef[0], b)))
Nb = -2. * (a*(1.0 - pow(coef[0] + coef[1], b)) - 1.0)
Nr = -2. * (a*(1.0 - pow(coef[1] + coef[2], b)) - 1.0)
Y = CCTF(Y, trcl, true, tvi, false)
Bx = Expr(Cb, Y, ex_dlut(Format("x "+rangeC_PC+" A@ 0 <= A {Nb} * y "+bi32m+" B@ + A {Pb} * B + ? "+bi32p), bi, true), lut=lut)
Rx = Expr(Cr, Y, ex_dlut(Format("x "+rangeC_PC+" A@ 0 <= A {Nr} * y "+bi32m+" B@ + A {Pr} * B + ? "+bi32p), bi, true), lut=lut)
Gx = Expr(Y, Bx, Rx, "x "+string(coef[2])+" y * - "+string(coef[0])+" z * - "+string(coef[1])+" / ", optSingleMode=true)
if (arc) {
R = CCTF(Rx, trc, false, false, tvo).propSet("_Matrix", 0).propSet("_Model", 1)
B = CCTF(Bx, trc, false, false, tvo)
G = CCTF(Gx, trc, false, false, tvo)
[R, G, B]
} else {
CombinePlanes(Rx, Gx, Bx, planes="RGB")
CCTF(trc, false, false, tvo)
propSet("_Matrix", 0)
propSet("_Model", 1) } }
##
## Y'UV and Y'IQ analogue color models
##
## The chroma subcarriers were strictly defined by their
## bandwidths so they were nor full nor narrow/legal range
##
## Luma in the other hand could be both, depending on region:
## 0-235 Y'UV PAL
## 0-235 Y'UV NTSC-J
## 16-235 Y'UV NTSC
##
## * Since 1979 the barely used FCC NTSC primaries along its Y'IQ color model
## gave way to the then PAL-only Y'UV color model for all regions, therefore
## using the same bandwidths for both chroma subcarriers.
##
## * A few PAL regions though still used a different color model like Y'DbDr.
##
## For a summary of the explicitly used matrices and explanations check this post:
## https://forum.doom9.org/showthread.php?p=1989126
##
# Bymax 0.885515
# Rymax 0.701088
# R'G'B' full range to Decorrelated Intermediate (Y,B-Y,R-Y)
# Rows should sum to 0, except first one which sums 1
global g_Luma = [0.298912, 0.586603, 0.114485]
global g_RGB_to_YByRy = [g_Luma[0], g_Luma[1], g_Luma[2],\
-g_Luma[0], -g_Luma[1], 1-g_Luma[2],\
1-g_Luma[0], -g_Luma[1], -g_Luma[2]]
# Y'UV to Y'IQ. Y'IQ is the same as Y'UV but with chroma axes rotated 33º
# The derivations of the coefficients are to be computed in radians
# so it matches the known RGB_to_YIQ matrix coefficients we all know (and love).
toRad = 33*(pi/180)
global g_YUV_to_YIQ = [1.0, 0.00000000, 0.00000000,\
0.0, -sin(toRad), cos(toRad),\
0.0, cos(toRad), sin(toRad)]
# R'G'B' to Y'UV (PAL -later also NTSC- analogue color model)
# Chroma range (U: ±0.435812284313725, V: ±0.615857694117647)
# Chroma range centered at unsigned range_size when not in float type, so V channel might clip when using 16-bit int and below
function RGB_to_YUVp (clip RGB, clip "G", clip "B", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(RGB)
bi = BitsPerComponent(RGB)
fs = propNumElements (RGB,"_ColorRange") > 0 ? \
propGetInt (RGB,"_ColorRange") == 0 : true
b32 = bi == 32
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, true) # When 'True' 16-235 (NTSC-U), when 'False' 0-235 (PAL, NTSC-J)
arc = Default (Array, isy)
RGB = tvi ? SMPTE_legal (RGB,false) : RGB
clp = !isy ? ExtractClip (RGB) : nop()
R = !isy ? clp[0] : tvi ? RGB.SMPTE_legal(false) : RGB
G = !isy ? clp[1] : tvi ? G. SMPTE_legal(false) : G
B = !isy ? clp[2] : tvi ? B.SMPTE_legal(false) : B
UVf = b32 ? "" : "range_half + "
rangeTV = tvo ? " ymax ymin - range_max / * ymin +" : " ymax range_max / *"
sclU = ((0.5*(235-16)+16)/255.) # This yields Luma grey at around 0.49216 or 125.5 in 8-bit
sclV = (240-16) /255. # This yields Chroma range at around 0.87843 or 224 in 8-bit
Yrow = g_Luma
Urow = ArrayOp(sclU,[g_RGB_to_YByRy[3],g_RGB_to_YByRy[4],g_RGB_to_YByRy[5]],"*")
Vrow = ArrayOp(sclV,[g_RGB_to_YByRy[6],g_RGB_to_YByRy[7],g_RGB_to_YByRy[8]],"*")
Y = ex_dlut("x "+string(Yrow[0])+" * y "+string(Yrow[1])+" * + z "+string(Yrow[2])+" * + "+rangeTV+"", bi, false)
U = ex_dlut("x "+string(Urow[0])+" * y "+string(Urow[1])+" * + z "+string(Urow[2])+" * + "+UVf , bi, false)
V = ex_dlut("x "+string(Vrow[0])+" * y "+string(Vrow[1])+" * + z "+string(Vrow[2])+" * + "+UVf , bi, false)
if (arc) {
Y = Expr(R, G, B, Y, optSingleMode=true).propSet("_Matrix", 5).propSet("_Model", 42)
U = Expr(R, G, B, U, optSingleMode=true)
V = Expr(R, G, B, V, optSingleMode=true)
[Y, U, V]
} else {
Expr(R, G, B, Y, U, V, optSingleMode=true, format=b32?"YUV444PS":"YUV444P"+string(bi))
propSet("_ColorRange", tvo ? 1 : 0)
propSet("_Matrix", 5)
propSet("_Model", 42) } }
# Y'UV 444 (PAL -later also NTSC- analogue color model) to R'G'B'
function YUVp_to_RGB (clip YUV, clip "U", clip "V", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(YUV)
bi = BitsPerComponent(YUV)
fs = propNumElements (YUV,"_ColorRange") > 0 ? \
propGetInt (YUV,"_ColorRange") == 0 : true
b32 = bi == 32
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, false)
arc = Default (Array, isy)
clp = !isy ? ExtractClip(YUV) : nop()
Y = !isy ? clp[0] : YUV
U = !isy ? clp[1] : U
V = !isy ? clp[2] : V
UVf = !b32 ? " range_half - " : ""
rangePC = tvi ? " ymin - range_max ymax ymin - / *" : " range_max ymax / *"
rangeTV = tvo ? " ymax ymin - range_max / * ymin +" : ""
# Derived from inverting RGB_to_YUVp coeffs
YUVtoRGB = [1.0000000000000000, 1.00000000000000000, 1.000000000000000,\
-0.0000000293788260, -0.39655256271362305, 2.031872510910034,\
1.1383928060531616, -0.58008438348770140, 0.000000000000000]
R = ex_dlut("x "+rangePC+" y "+UVf+string(YUVtoRGB[3])+" * + z "+UVf+string(YUVtoRGB[6])+" * + "+rangeTV, bi, false)
G = ex_dlut("x "+rangePC+" y "+UVf+string(YUVtoRGB[4])+" * + z "+UVf+string(YUVtoRGB[7])+" * + "+rangeTV, bi, false)
B = ex_dlut("x "+rangePC+" y "+UVf+string(YUVtoRGB[5])+" * + z "+UVf+string(YUVtoRGB[8])+" * + "+rangeTV, bi, false)
if (arc) {
R = Expr(Y, U, V, R, optSingleMode=true).propSet("_Matrix", 0).propSet("_Model", 1)
G = Expr(Y, U, V, G, optSingleMode=true)
B = Expr(Y, U, V, B, optSingleMode=true)
[R, G, B]
} else {
Expr(Y, U, V, R, G, B, optSingleMode=true, format="RGBP"+(bi>16?"S":string(bi)))
propSet("_ColorRange", tvo ? 1 : 0)
propSet("_Matrix", 0)
propSet("_Model", 1) } }
# Y'CbCr 444 to Y'UV 444 (PAL -later also NTSC- analogue color model)
# Chroma range (U: ±0.435812284313725, V: ±0.615857694117647)
# Chroma range centered at unsigned range_size when not in float type, so V channel might clip when using 16-bit int and below
function YCC_to_YUVp (clip YCC, clip "Cb", clip "Cr", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(YCC)
bi = BitsPerComponent(YCC)
fs = propNumElements (YCC,"_ColorRange") > 0 ? \
propGetInt (YCC,"_ColorRange") == 0 : true
b32 = bi == 32
lut = b32 || isRunTime(YCC,false) ? 0 : 1
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, true) # When 'True' 16-235 (NTSC-U), when 'False' 0-235 (PAL, NTSC-J)
arc = Default (Array, isy)
if (!isy) {
clp = ExtractClip(YCC)
Yc = clp[0]
Cb = clp[1]
Cr = clp[2] }
UVf = !b32 ? " range_half - " : ""
rangeC_PC = tvi ? " range_max cmax cmin - / * " : ""
rangeC_pos = !b32 ? " range_half +" : ""
sclU = ((0.5*(235-16)+16)/255.) # This yields Luma grey at around 0.49216 or 125.5 in 8-bit
sclV = (240-16) /255. # This yields Chroma range at around 0.87843 or 224 in 8-bit
Yrow = g_Luma
Cb_to_U = (sclU*g_RGB_to_YByRy[5]) / 0.5 # = 0.871624568627450
Cr_to_V = (sclV*g_RGB_to_YByRy[6]) / 0.5 # = 1.231715388235294
Y = ex_dlut(!tvi && tvo ? "x range_max ymax ymin - / * ymin +" : !tvi && !tvo ? "x ymax range_max / *" : \
tvi && !tvo ? "x ymin - ymax range_max / *" : "", bi, true)
U = ex_dlut("x "+UVf+string(Cb_to_U)+rangeC_PC+" * "+rangeC_pos, bi, true)
V = ex_dlut("x "+UVf+string(Cr_to_V)+rangeC_PC+" * "+rangeC_pos, bi, true)
if (arc) {
Y = Expr(Yc, Y, optSingleMode=false, lut=lut).propSet("_Matrix", 5).propSet("_Model", 42)
U = Expr(Cb, U, optSingleMode=false, lut=lut)
V = Expr(Cr, V, optSingleMode=false, lut=lut)
[Y, U, V]
} else {
Expr(YCC, Y, U, V, optSingleMode=false, format=b32?"YUV444PS":"YUV444P"+string(bi))
propSet("_ColorRange", tvo ? 1 : 0)
propSet("_Matrix", 5)
propSet("_Model", 42) } }
# Y'UV (PAL -later also NTSC- analogue color model) to Y'CbCr 444
function YUVp_to_YCC (clip YUV, clip "U", clip "V", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(YUV)
bi = BitsPerComponent(YUV)
fs = propNumElements (YUV,"_ColorRange") > 0 ? \
propGetInt (YUV,"_ColorRange") == 0 : true
b32 = bi == 32
lut = b32 || isRunTime(YUV,false) ? 0 : 1
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, true)
arc = Default (Array, isy)
if (!isy) {
clp = ExtractClip(YUV)
Y = clp[0]
U = clp[1]
V = clp[2] }
UVf = !b32 ? " range_half - " : ""
rangeC_PC = tvo ? " cmax cmin - range_max / * " : ""
rangeC_pos = !b32 ? " range_half +" : ""
# Derived from inverting YCC_to_YUVp coeffs
YUVtoYCC = [1.0, 0.0000000000000000, 0.0000000000000000,\
0.0, 1.1472828388214111, 0.0000000000000000,\
0.0, 0.0000000000000000, 0.8118758201599121]
Yc = ex_dlut(!tvi && tvo ? "x ymax ymin - ymax / * ymin +" : !tvi && !tvo ? "x range_max ymax / *" : \
tvi && !tvo ? "x ymin - range_max ymax / *" : "", bi, true)
Cb = ex_dlut("x "+UVf+string(YUVtoYCC[4])+rangeC_PC+" * "+rangeC_pos, bi, true)
Cr = ex_dlut("x "+UVf+string(YUVtoYCC[8])+rangeC_PC+" * "+rangeC_pos, bi, true)
if (arc) {
Yc = Expr(Y, Yc, optSingleMode=false, lut=lut).propSet("_Matrix", 5).propSet("_Model", 5)
Cb = Expr(U, Cb, optSingleMode=false, lut=lut)
Cr = Expr(V, Cr, optSingleMode=false, lut=lut)
[Yc, Cb, Cr]
} else {
Expr(YUV, Yc, Cb, Cr, optSingleMode=false, format=b32?"YUV444PS":"YUV444P"+string(bi))
propSet("_ColorRange", tvo ? 1 : 0)
propSet("_Matrix", 5)
propSet("_Model", 5) } }
# R'G'B' to Y'IQ 444 (NTSC 1953 analogue color model)
# Chroma range (I: ±0.59662443399429320, Q: ±0.52277213335037230)
# Chroma range centered at range_size when not in float type, so I/Q channels might clip when using 16-bit int and below
function RGB_to_YIQ (clip RGB, clip "G", clip "B", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(RGB)
bi = BitsPerComponent(RGB)
fs = propNumElements (RGB,"_ColorRange") > 0 ? \
propGetInt (RGB,"_ColorRange") == 0 : true
b32 = bi == 32
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, true) # When 'True' 16-235 (NTSC-U), when 'False' 0-255 (no standard)
arc = Default (Array, isy)
RGB = tvi ? SMPTE_legal (RGB,false) : RGB
clp = !isy ? ExtractClip (RGB) : nop()
R = !isy ? clp[0] : tvi ? RGB.SMPTE_legal(false) : RGB
G = !isy ? clp[1] : tvi ? G. SMPTE_legal(false) : G
B = !isy ? clp[2] : tvi ? B.SMPTE_legal(false) : B
UVf = b32 ? "" : "range_half + "
rangeTV = tvo ? " ymax ymin - range_max / * ymin +" : " range_max *"
sclU = ((0.5*(235-16)+16)/255.) # This yields Luma grey at around 0.49216 or 125.5 in 8-bit
sclV = (240-16) /255. # This yields Chroma range at around 0.87843 or 224 in 8-bit
Yrow = g_Luma
Urow = ArrayOp(sclU,[g_RGB_to_YByRy[3],g_RGB_to_YByRy[4],g_RGB_to_YByRy[5]],"*")
Vrow = ArrayOp(sclV,[g_RGB_to_YByRy[6],g_RGB_to_YByRy[7],g_RGB_to_YByRy[8]],"*")
YUV = ArrayAppend(ArrayAppend(Yrow, Urow), Vrow)
YIQ = MatrixDot(g_YUV_to_YIQ, YUV) # Rotating Y'UV chroma axes by 33º
Y = ex_dlut("x "+string(YIQ[0])+" * y "+string(YIQ[1])+" * + z "+string(YIQ[2])+" * + "+rangeTV+"", bi, false)
I = ex_dlut("x "+string(YIQ[3])+" * y "+string(YIQ[4])+" * + z "+string(YIQ[5])+" * + "+UVf , bi, false)
Q = ex_dlut("x "+string(YIQ[6])+" * y "+string(YIQ[7])+" * + z "+string(YIQ[8])+" * + "+UVf , bi, false)
if (arc) {
Y = Expr(R, G, B, Y, optSingleMode=true).propSet("_Matrix", 4).propSet("_Model", 3)
I = Expr(R, G, B, I, optSingleMode=true)
Q = Expr(R, G, B, Q, optSingleMode=true)
[Y, I, Q]
} else {
Expr(R, G, B, Y, I, Q, optSingleMode=true, format=b32?"YUV444PS":"YUV444P"+string(bi))
propSet("_ColorRange", tvo ? 1 : 0)
propSet("_Matrix", 4)
propSet("_Model", 3) } }
# Y'IQ 444 (NTSC 1953 analogue color model) to R'G'B'
function YIQ_to_RGB (clip YIQ, clip "I", clip "Q", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(YIQ)
bi = BitsPerComponent(YIQ)
fs = propNumElements (YIQ,"_ColorRange") > 0 ? \
propGetInt (YIQ,"_ColorRange") == 0 : true
b32 = bi == 32
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, false)
arc = Default (Array, isy)
clp = !isy ? ExtractClip(YIQ) : nop()
Y = !isy ? clp[0] : YIQ
I = !isy ? clp[1] : I
Q = !isy ? clp[2] : Q
UVf = !b32 ? " range_half - " : ""
rangePC = tvi ? " ymin - range_max ymax ymin - / *" : ""
rangeTV = tvo ? " ymax ymin - range_max / * ymin +" : ""
# Derived from inverting RGB_to_YIQ coeffs
YIQtoRGB = [1.0000000000000000, 1.00000000000000000, 1.0000000000000000,\
0.9547365307807922, -0.27052170038223267, -1.1066371202468872,\
0.6200131177902222, -0.64851361513137820, 1.7040715217590332]
R = ex_dlut("x "+rangePC+" y "+UVf+string(YIQtoRGB[3])+" * + z "+UVf+string(YIQtoRGB[6])+" * + "+rangeTV, bi, false)
G = ex_dlut("x "+rangePC+" y "+UVf+string(YIQtoRGB[4])+" * + z "+UVf+string(YIQtoRGB[7])+" * + "+rangeTV, bi, false)
B = ex_dlut("x "+rangePC+" y "+UVf+string(YIQtoRGB[5])+" * + z "+UVf+string(YIQtoRGB[8])+" * + "+rangeTV, bi, false)
if (arc) {
R = Expr(Y, I, Q, R, optSingleMode=true).propSet("_Matrix", 0).propSet("_Model", 1)
G = Expr(Y, I, Q, G, optSingleMode=true)
B = Expr(Y, I, Q, B, optSingleMode=true)
[R, G, B]
} else {
Expr(Y, I, Q, R, G, B, optSingleMode=true, format="RGBP"+(bi>16?"S":string(bi)))
propSet("_ColorRange", tvo ? 1 : 0)
propSet("_Matrix", 0)
propSet("_Model", 1) } }
# Y'CbCr 444 to Y'IQ 444 (NTSC 1953 analogue color model)
# Chroma range (I: ±0.59662443399429320, Q: ±0.52277213335037230)
# Chroma range centered at range_size when not in float type, so I/Q channels might clip when using 16-bit int and below
function YCC_to_YIQ (clip YCC, clip "Cb", clip "Cr", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(YCC)
bi = BitsPerComponent(YCC)
fs = propNumElements (YCC,"_ColorRange") > 0 ? \
propGetInt (YCC,"_ColorRange") == 0 : true
b32 = bi == 32
iRn = isRunTime(YCC,false)
lt1 = b32 || iRn ? 0 : 1
lt2 = bi > 12 || iRn ? 0 : 2
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, true) # When 'True' 16-235 (NTSC-U), when 'False' 0-255 (no standard)
arc = Default (Array, isy)
clp = !isy ? ExtractClip(YCC) : nop()
Yc = !isy ? clp[0] : YCC
Cb = !isy ? clp[1] : Cb
Cr = !isy ? clp[2] : Cr
UVf = !b32 ? " range_half - " : ""
rangeC_PC = tvi ? " range_max cmax cmin - / * " : ""
rangeC_pos = !b32 ? " range_half +" : ""
# Derivation
# YCbCr->YUV
# Cb->U = 0.435812284313725 / 0.5 = 0.87162456862745
# Cr->V = 0.615857694117647 / 0.5 = 1.231715388235294
#
# YCbCr->YUV->YIQ
# Cb->I = 0.871624568627450 *-sin(33) =-0.474720768297668
# Cb->Q = 0.871624568627450 * cos(33) = 0.731005873796788
# Cr->I = 1.231715388235294 * cos(33) = 1.033003446729065
# Cr->Q = 1.231715388235294 * sin(33) = 0.670840286601698
YCCtoYIQ = [1.0, 0.0000000000000000, 0.0000000000000000,\
0.0, -0.4747207760810852, 0.7310058474540710,\
0.0, 1.0330034494400024, 0.6708403229713440]
Y = ex_dlut(!tvi && tvo ? "x ymax ymin - range_max / * ymin +" : \
tvi && !tvo ? "x ymin - range_max ymax ymin - / *" : "", bi, true)
I = ex_dlut("x "+UVf+string(YCCtoYIQ[4])+rangeC_PC+" * y "+UVf+string(YCCtoYIQ[7])+rangeC_PC+" * + "+rangeC_pos, bi, true)
Q = ex_dlut("x "+UVf+string(YCCtoYIQ[5])+rangeC_PC+" * y "+UVf+string(YCCtoYIQ[8])+rangeC_PC+" * + "+rangeC_pos, bi, true)
if (arc) {
Y = Expr(Yc, Y, optSingleMode=false, lut=lt1).propSet("_Matrix", 4).propSet("_Model", 3)
I = Expr(Cb, Cr, I, optSingleMode=false, lut=lt2)
Q = Expr(Cb, Cr, Q, optSingleMode=false, lut=lt2)
[Y, I, Q]
} else {
I = ReplaceStr(ReplaceStr(I,"y ","z "),"x ","y ")
Q = ReplaceStr(ReplaceStr(Q,"y ","z "),"x ","y ")
Expr(Yc, Cb, Cr, Y, I, Q, optSingleMode=true, format=b32?"YUV444PS":"YUV444P"+string(bi))
propSet("_ColorRange", tvo ? 1 : 0)
propSet("_Matrix", 4)
propSet("_Model", 3) } }
# Y'IQ 444 (NTSC 1953 analogue color model) to Y'CbCr 444
function YIQ_to_YCC (clip YIQ, clip "I", clip "Q", bool "tv_in", bool "tv_out", bool "Array") {
isy = isy(YIQ)
bi = BitsPerComponent(YIQ)
fs = propNumElements (YIQ,"_ColorRange") > 0 ? \
propGetInt (YIQ,"_ColorRange") == 0 : true
b32 = bi == 32
iRn = isRunTime(YIQ,false)
lt1 = b32 || iRn ? 0 : 1
lt2 = bi > 12 || iRn ? 0 : 2
tvi = Default (tv_in, !fs)
tvo = Default (tv_out, true)
arc = Default (Array, isy)
clp = !isy ? ExtractClip(YIQ) : nop()
Y = !isy ? clp[0] : YIQ
I = !isy ? clp[1] : I
Q = !isy ? clp[2] : Q
UVf = !b32 ? " range_half - " : ""
rangeC_PC = tvo ? " cmax cmin - range_max / * " : ""
rangeC_pos = !b32 ? " range_half +" : ""
# Derived from inverting YCC_to_YIQ coeffs
YIQtoYCC = [1.0, 0.0000000000000000, 0.00000000000000000,\
0.0, -0.6248551011085510, 0.68089640140533450,\
0.0, 0.9621924757957458, 0.44217929244041443]
Yc = ex_dlut(!tvi && tvo ? "x ymax ymin - range_max / * ymin +" : \
tvi && !tvo ? "x ymin - range_max ymax ymin - / *" : "", bi, true)
Cb = ex_dlut("x "+UVf+string(YIQtoYCC[4])+rangeC_PC+" * y "+UVf+string(YIQtoYCC[7])+rangeC_PC+" * + "+rangeC_pos, bi, true)
Cr = ex_dlut("x "+UVf+string(YIQtoYCC[5])+rangeC_PC+" * y "+UVf+string(YIQtoYCC[8])+rangeC_PC+" * + "+rangeC_pos, bi, true)
if (arc) {
Yc = Expr(Y, Yc, optSingleMode=false, lut=lt1).propSet("_Matrix", 4).propSet("_Model", 5)
Cb = Expr(I, Q, Cb, optSingleMode=false, lut=lt2)
Cr = Expr(I, Q, Cr, optSingleMode=false, lut=lt2)
[Yc, Cb, Cr]
} else {
Cb = ReplaceStr(ReplaceStr(Cb,"y ","z "),"x ","y ")