imwrite
imshow
xs2im
imcrop
imresize
imadd
imsubtract
immultiply
imdivide
imabsdiff
imcomplement
imlincomb
imnoise
mean2
corr2
std2
imhist
im2bw
im2int8
im2uint8
im2int16
im2uint16
im2int32
im2double
mat2gray
rgb2gray
rgb2hsv
hsv2rgb
rgb2ycbcr
ycbcr2rgb
rgb2ntsc
ntsc2rgb
fspecial
edge
