| Image Processing Toolbox Release Notes | |
New Features
This section introduces the new features and enhancements added in the Image Processing Toolbox 3.2 since Version 3.1 (Release 12.1).
The new features introduced in the Image Processing Toolbox, Version 3.2, include:
logical data type.)
If you are upgrading from a release earlier than Release 12.1, then you should also see New Features.
Writing DICOM Files
The Image Processing Toolbox now supports writing files in Digital Imaging and Communications in Medicine (DICOM) format, using the dicomwrite function. Previous releases of the toolbox supported reading DICOM files with the dicomread function and reading metadata from a DICOM file using the dicominfo function.
Representing Binary Images
In previous releases, toolbox functions that returned binary images returned them as uint8 logical arrays. The toolbox used the presense of the logical flag to signify that the data range in the file was [0,1].
With this release, the toolbox returns binary images as logical arrays, using the new MATLAB logical data type. For more information about the new logical class, see the MATLAB 6.5 Release Notes.
Changes to Existing Functions
The Image Processing Toolbox, Version 3.2, includes changes to these existing functions.
| Function |
Description of Change |
circshift |
Moved into MATLAB |
freqz2 |
Checks for insignificant real part in addition to insignificant imaginary part |
getnhood |
Returns a logical array |
gray2ind |
More efficient memory usage |
imfill |
New syntax for grayscale images does not require 'holes' argument. This option is selected automatically. |
imlincomb |
Accepts more than two images as input and you can specify the output class |
immovie |
Flicker during movie creation eliminated |
imtransform |
Linear and bicubic interpolation are faster |
ordfilt2 |
Uses a different algorithm for binary images that improves processing speed for these images |
roifilt2 |
More efficient. Operation is performed only on the region of interest, not the entire image. |
| | Image Processing Toolbox Release Notes | Major Bug Fixes | |