Minor Enhancements :: Image Processing Toolbox 4.0 Release Notes (Image Processing Toolbox Release Notes)

Image Processing Toolbox Release Notes

Minor Enhancements

In addition to the major new features, the toolbox includes several additional enhancements.

Function
Enhancement

cp2tform
The algorithms have been modified to make them more robust numerically when the input coordinates have a very large offset from the origin.

cpselect
The Control Point Selection Tool now displays a single legend window even if multiple instances of the tool are being displayed.

imadjust
Supports a simplified, single-input syntax, in which it uses stretchlim to compute contrast-stretch parameters automatically.

immovie
No longer flickers while a movie is being generated.

medfilt2
Class support has been extended to all numeric types and it uses a new algorithm for large window sizes that is significantly faster than the old one.

ordfilt2

Class support has been extended to all numeric types and it uses a new algorithm for large rectangular domains that is significantly faster than the old one.

regionprops
Uses an improved method for computing the convex hull of a labeled object, resulting in more accurate ConvexHull, Convexity, and ConvexImage measurements.

roipoly
Uses a new algorithm that produces more intuitive results and has better performance. Users who have code that requires the same output as the previous version can use the function roipolyold.

tformfwd and tforminv
Supports additional syntaxes that make these functions easier to use for common operations.

Function	Enhancement
`cp2tform`	The algorithms have been modified to make them more robust numerically when the input coordinates have a very large offset from the origin.
`cpselect`	The Control Point Selection Tool now displays a single legend window even if multiple instances of the tool are being displayed.
`imadjust`	Supports a simplified, single-input syntax, in which it uses `stretchlim` to compute contrast-stretch parameters automatically.
`immovie`	No longer flickers while a movie is being generated.
`medfilt2`	Class support has been extended to all numeric types and it uses a new algorithm for large window sizes that is significantly faster than the old one.
`ordfilt2`	Class support has been extended to all numeric types and it uses a new algorithm for large rectangular domains that is significantly faster than the old one.
`regionprops`	Uses an improved method for computing the convex hull of a labeled object, resulting in more accurate `ConvexHull`, `Convexity`, and `ConvexImage` measurements.
`roipoly`	Uses a new algorithm that produces more intuitive results and has better performance. Users who have code that requires the same output as the previous version can use the function `roipolyold`.
`tformfwd` and `tforminv`	Supports additional syntaxes that make these functions easier to use for common operations.

Performance Improvements Changes to Sample Images Included