User`s guide

R2012b
6-2
Image gradient computation with imgradient and imgradientxy
functions
The toolbox includes two new functions for computing image gradients: imgradient
and imgradientxy. imgradient computes the gradient magnitude and direction.
imgradientxy computes the X and Y directional gradients
Histogram matching with imhistmatch function
The new function imhistmatch adjusts the histogram of an image to match the N-bin
histogram of a reference image.
Multilevel thresholding with multithresh and imquantize functions
The new imquantize and multithresh functions enable multilevel grayscale thresholding
and labeling. imquantize labels an image using a fixed range of grayscale levels.
multithresh computes threshold levels using Otsu's method. The levels computed by
multithresh can be used as input to imquantize.
3-D image registration with imregister function
In addition to 2-D images, imregister can now align 3-D images using intensity-based
registration of the images' voxel data.
Code generation for bwmorph and bwlookup with MATLAB Coder
Standalone C code can be generated for bwmorph and bwlookup. The generated C code
meets the strict memory and data type requirements of embedded target environments.
To generate this code you need a MATLAB Coder license.
Added function bwlookup
Compatibility Considerations
Function applylut is not recommended; use bwlookup instead.