notes.txt

Camera().getImage().show()  <--- this takes 2d context from a camera, casts as image model, adds canvas to dom

Image
 - canvas2d
 - 2d array

 Image(canvas) <- make an image from a canvas 2d context
 Image(array) <- make an image from an array

 getBitmap() <- if canvas2d, returns this, if 2d array, creates a canvas (off-dom) and populates it
 getMatrix() <- if has array raturns, otherwise populates from canvas

 getDrawingLayer() (aka dl()) <- returns a new canvas (100% alpha) of same dimensions, as processing object
 addDrawingLayer()
 removeDrawingLayer()
 
 Image.show([parent dom object]) <- if canvas is not visible/in dom add to dom, if not given parent object, append to body
   - if the image has drawing layers, stack those over top
 
 binarize() <- implement as SimpleCV, but use cv.js 

 Image.show() <-- write image to dom
 Image.binarize().show() <-- write binarized image to dom (image remains unchanged)