Command  Function: General Point Image Operations 
vpix  General Point operations on a single image (2D or 3D) 
vmath  General math operations on a single image (2D or 3D) 
vop  General operations between two images (2D or 3D) 
Command  Function: Image convolution 
vsf  General filter,
Convolve (or dilate/erode) with a kernel (2D or 3D).

vconv  Convolve (+binary morph
ops) with a kernel (only 2D byte images) 
vcorr  Template Matching
(correlation, convolution, MSE, or MAE) (2D or 3D) 
vgfilt  Gaussian filter function (2D or 3D) 
vdog  Difference of Gaussian filter function (2D or 3D) 
vmean  Mean filter (also vmax and vmin)
(2D or 3D) 
vmedian  Median filter function (2D or 3D) 
vhisteq  Histogram equalization
(optional linear or log equalization) (2D) 
vfft  Fast Fourier Transform (FFT) (2D) 
v3fft  Fast Fourier Transform (FFT) (3D) 
Command  Function: Edge Enhancement and Detection 
vedge  Generic 2D edge operator makes use of the following edge applications 
vderiche  Deriche edge operator 
vsobel  Sobel edge function 
vrcross  Roberts cross edge operator 
vedgex  Edge operator posprocessing: nonmaximum suppression, and thresholding with hysteresis 
v3grad  3D gradient of an image sequence or
3D image 
Command  Function: Binary Image and 3D Surface 
vmorph  General and spherical morphological filter (2D or 3D) 
vdist  Distance transform (2D or 3D) 
vedist  Distance transform (2D or 3D) 
v3bfill  3D background fill (binary image) (2D or 3D) 
vchull  Compute the 3D convex hull of a binary image 
vbfilt  Geometric filter function for binary 3D images 
v3pol  Convert binary (3D) image to 3D Polygons 
Command  Function: 3D Skeleton Analysis 
v3grad  3D gradient of an image sequence or 3D image 
v3thin  Thin a binary 3D image to a skeleton line structure 
v3prune  Remove short lines from a binary line image 