update README.md

README.md

@@ -46,6 +46,9 @@ bool encodedData = hdr.save(grayPix, "png_img/encoded_lena.png");
  [img4d_lib.edge](https://github.com/DYGV/img4d/blob/master/README.md#img4d_libedge)  
 
  [img4d_lib.dft](https://github.com/DYGV/img4d/blob/master/README.md#img4d_libdft) 
+
+ [img4d_lib.template_matching](https://github.com/DYGV/img4d/blob/master/README.md#img4d_libtemplate_matching) 
+
 
 ## img4d
 -  **ref auto load(ref Header header, string filename)**  
@@ -139,4 +142,11 @@ Convert to grayscale by weighting
 ## img4d_lib.dft
 -  **Complex!(double)[] _dft(Complex!(double)[] data, int num)**  
 -  **Complex!(double)[][] transpose(Complex!(double)[][] matrix, int h, int w)** 
--  **ubyte[][] shift(ubyte[][] data, int h, int w)**
+-  **ubyte[][] shift(ubyte[][] data, int h, int w)**  
+
+## img4d_lib.template_matching
+-  **this(Header templateHeader, Header inputHeader, ubyte[][] templateImage, ubyte[][] inputImage)**  
+-  **int[] SSD**  
+-  **int[] SAD**  
+-  **int[] NCC**  
+-  **int[] ZNCC**