Image Processing Toolbox Release Notes

Performance Improvements

The performance of several existing toolbox functions has been improved in this release, including:

• regionprops (six times faster than previous version)
• imfilter (faster for separable filters)

The dicomread function has a five to 10 times performance improvement over the previous version.

The performance of the following morphology functions has been improved when used with large rectangular structuring elements.

• imdilate
• imerode

Functions that call imdilate and imerode, specifying large rectangular structuring elements, might also see a speed improvement, i.e., imopen, imclose, imtophat, and imbothat.

The performance of the following image type conversion functions and color space conversion functions has been improved by using the intlut function with data of classes uint8 and uint16.

• imadjust
• imcomplement
• ind2gray
• rgb2gray
• rgb2ntsc
• rgb2ycbcr
• rcbcr2rgb

Changes to Other Toolbox Functions

Improved Memory Usage

© 1994-2005 The MathWorks, Inc.