Image input, output, and display
	imread
	imwrite
	imshow
	imfinfo
	

Video/camera input, output
	aviinfo
	aviopen
	camopen
	aviclose
	avicloseall
	avilistopened
	avireadframe

Image type conversion
      im2bw
      im2uint8
      im2int8
      im2uint16
      im2int16
      im2int32
      im2double
      mat2gray
      rgb2gray

Spatial transformation and registration
	imcrop
	imresize
    TODO:
	imrotate
	interp2
	imtransform


Image Analysis and Statistics
      mean2
      corr2
      std2/stdev2
      imhist
      edge

Image Arithmetic
      imabsdiff
      imadd
      imdivide
      immultiply
      imsubtract
      imcomplement
      imlincomb

Image Enhancement and Restoration
      imnoise
    TODO:
      adapthisteq
      decorrstretch
      histeq
      imadjust
      medfilt2
      ordfilt2
      stretchlim
      uintlut
      wiener2

Linear Filtering and Transforms
       imfilter
       fspecial
     TODO:
       fspecail(disk, motion filter)

Morphological operations
     TODO:
	bwboundaries
	bwdist
	bwlabel
	dilate
	erode
	
Color space conversions
        hsv2rgb
	rgb2hsv
	rgb2ycbcr
	ycbcr2rgb
	rgb2ntsc
	ntsc2rgb
