  addframe - Add a frame to the video file. (experimental)
  aviclose - Close a video file. (experimental)
  avicloseall - Close all opened video files/cameras. (experimental)
  avifile - Create a new video file to write. (experimental)
  aviinfo - Get the information about video files. (experimental)
  avilistopened - Show all opened video files. (experimental)
  aviopen - Open a video file. (experimental)
  avireadframe - Grabs and returns a frame from a opened video file or camera (experimental)
  camopen - Open a camera. (experimental)
  corr2 - 2D correlation coefficient
  edge - Find edges in a single channel image.
  filter2 - 2D digital filtering
  fspecial - Create some 2D special filters
  hsv2rgb - Convert a HSV image to the equivalent RGB image.
  im2bw - Convert image to binary
  im2double - Convert image to double precision
  im2int16 - Convert image to 16-bit signed integers
  im2int32 - Convert image to 32-bit signed integers
  im2int8 - Convert image to 8-bit signed integers
  im2uint16 - Convert image to 16-bit unsigned integers
  im2uint8 - Convert image to 8-bit unsigned integers
  imabsdiff - Calculate absolute difference of two images
  imadd - Add two images or add a constant to an image
  imcomplement - Complement image
  imcrop - Crop image
  imdivide - Divide two images or divide an image by an constant.
  imfilter - Image filtering
  imfinfo - Get the information about image file
  imhist - get the histogram of an image
  imlincomb - Linear combination of images
  immultiply - Multiply two images or multiply an image by an constant.
  imnoise - Add noise (gaussian, etc.) to an image
  imread - Reads image file
  imresize - Resizes image
  imshow - Displays images in graphic window
  imsubtract - Subtract two images or subtract a constant from an image
  imwrite - Write image to file
  mat2gray - Convert matrix to grayscale image
  mean2 - Average/mean of matrix elements
  ntsc2rgb - Convert a NTSC image to the equivalent RGB image.
  rgb2gray - Convert RGB images to gray images
  rgb2hsv - Convert a RGB image to the equivalent HSV image.
  rgb2ntsc - Convert a RGB image to the equivalent NTSC image YIQ.
  rgb2ycbcr - Convert a RGB image to the equivalent YCbCr image.
  std2 - Standard deviation of 2D matrix elements
  stdev2 - Standard deviation of 2D matrix elements
  xs2im - Convert graphics to an image matrix.
  ycbcr2rgb - Convert a YCbCr image to the equivalent RGB image.