Useful matlab commands for programming Canny edge detection
imread: Reading images in different formats
rgb2gray: converting rgb color images to grayscale
imshow, imagesc, image: Displaying images
conv2: 2D convolution with a mask
exp, log: Transcendental functions
rand, randn: Uniform and Gaussian random deviates
plot, plot3: 2D and 3D plots
figure: Placing items in a graphics window
load, save, fread, fwrite, print: File I/O
The easiest way to get command line help at the >> prompt is to type
help. Other GUI-based help tools are also available.