- angle - gradient direction of edges
- bwborder - Border detection for binary images
- bwdist - distance transforms
- bwlabel - Connected component labeling
- curvature - Curvature of a contour
- curvature2d - Curvature of a surface or image
- dilate - Morphological dilation of binary images
- drawline - Draws line in a binary image
- edge - Edge detection
- edilate - Euclidean morphological dilation of binary
- erode - Morphological erosion of binary images
- fftderiv - Derivative of a vector using FFT
- follow - A contour follower
- fractal - Multiscale fractal dimension curve
- getangle - gradient direction of edges
- gray_imread - Read any image as grayscale
- gsm - 1D gaussian smoothing
- gsm2d - 2D gaussian smoothing
- hello_sip - Learn to add your own C routine to SIP
- hough - Hough transform for line detection
- hsv2rgb - Converts from HSV to RGB colorspace
- ihough - Inverse hough transform
- im2bw - Convert images to binary by thresholding
- im2gray - Converts color images or colormaps to grayscale
- imconv - 2D convolution
- imcorrcoef - Template matching by normalized correlation
- imfinfo - Image file information
- imnoise - Generate noise (salt & pepper, etc)
- imphase - Image phase calculation.
- improfile - Draws intensity profiles of an image
- imread - Reads image file in ANY format
- imroi - Roi (region of interest) of an image
- imshow - Displays images in scilab graphic window
- imvariance - Calculates the variance of an image
- imwrite - Writes to an image file in ANY format
- imxprofile - Draws intensity profiles of an already displayed image
- ind2rgb - Convert indexed images to truecolor storage
- interferometry_gui - Graphical User Interface (GUI) for SIP functions
- iradon - Inverse hough transform
- minmax - Min/Max algorithm for noise removal from images
- mkfftfilter - Builds 2D frequency-domain filters
- mkfilter - Returns popular 2D convolution kernels
- mogrify - Filter, rotate, zoom, equalization, and MANY
- normal - Normalize array to a given range
- ntsc2rgb - Converts from YIQ to RGB colorspace
- percol - Test if binary image is percolated
- perim - Perimeter of binary shape
- pifilter - Pi filter for phased images
- poledetection - Poles (or residues) detection in a wrapped
- radon - Radon transform
- rgb2hsv - Converts from RGB to HSV colorspace
- rgb2ntsc - Converts from RGB to YIQ colorspace
- rgbplot - displays the three components (red, green and blue)of a colormap
- sip_colormap - creates a beautiful colormap
- sip_fftshift - Swap arrays (used with fft)
- sip_get_verbose - the current verbose mode
- sip_quiet - suppress vebose messages
- sip_set_verbose - set the messaging level for SIP routines
- sip_wordy - enable verbose messages
- sip_setenv - sets environment variables
- skel - skeletonization, thinning, Medial Axis Transform
- thin - thinning by border deletion
- unfollow - Converts a parametric contour into a binary image
- unwrapl - Unwraps phased images linearly
- unwrapp - Unwraps phased images by path following
- watershed - image segmentation with markers
- xgetpixel - Gets the pixel coordinates from an image
- xor - Exclusive or