User`s guide

R2006b
18-2
Enhancements to DICOM Capabilities
This release includes the following new features and enhancements to the DICOM
capabilities of the Image Processing Toolbox:
• The toolbox includes a new function, dicomlookup, that provides a way to find the
name of an attribute in a DICOM data dictionary by specifying its group and element
tags, or find the group and element tags for an attribute by specifying its name.
• The performance of the dicominfo function has been significantly improved
New Symmetric Option with graycomatrix Function
The graycomatrix function now supports a new option: 'symmetric'. With this
option, you can create a gray-level co-occurrence matrix (GLCM) that is symmetric about
its diagonal. This is consistent with the GLCM definition given by Haralick in his 1973
article. For more information, see graycomatrix.
Enhancements to ICC Color Capabilities
The toolbox includes the following enchancements to the ICC color capabilities:
• The applycform function can now transform colors using profiles that contain
parametric curve types.
• The iccread function now supports named colors in ICC profiles.
Compatibility Considerations
The whitepoint function, when used with the 'd50' argument, returns different
results in R2006b than it did in R2006a. The previously returned XYZ color values
were incorrect according to the current interpretation of standards. If your algorithm
depended on the old values, you might see subtly different results.
Enhancements to the imdistline Function
This release includes the following enhancements to the imdistline function:
• The imdistline function now uses a different cursor shape at its endpoints to
highlight that these endpoints can be grabbed to change the length or direction of the