Version 7.3 (R2011b) Image Processing Toolbox :: Image Processing Toolbox Release Notes (Image Processing Toolbox™)

Version 7.3 (R2011b) Image Processing Toolbox

This table summarizes what's new in Version 7.3 (R2011b).

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems
Yes Details below	Yes—Details labeled as Compatibility Considerations, below. See also Summary.	Bug Reports Includes fixes

The following sections describe new features and changes introduced in this version:

Parallel Block Processing Now Possible with blockproc

If you have Parallel Computing Toolbox™, you can now use a new option in blockproc to improve performance of block processing tasks. Set the 'UseParallel' argument to true to use this option.

New bwdistgeodesic Function Computes Geodesic Distance Transform

Use bwdistgeodesic to compute the geodesic distance transform for a binary image.

New graydist Function Computes Gray-Weighted Distance Transform

Use graydist to compute the gray-weighted distance transform of a grayscale image.

New imapplymatrix Function Computes Linear Combination of Color Channels

The new imapplymatrix function applies a weighted sum to the color planes of an image for use in color space conversions.

Performance Improvements

Faster Functions

imhist for large images
rgb2gray

hdrread Now Correct for Small Values

The hdrread function now returns correct small values. Specifically, the special case value of (0,0,0,0) now maps to (0,0,0).

Compatibility Considerations

Before R2011b, the value (0,0,0,0) mapped to (0.5740E-41, 0.5740E-41, 0.5740E-41).

Change in Behavior for dicomwrite

If you use the dicomwrite function with the 'CreateMode' option set to 'Create' and pass in a data structure that contains the 'InversionTime' tag, you will always receive 'InversionTime' in your output.

Compatibility Considerations

Before R2011b, if your input structure contained the 'InversionTime' field, the DICOM file may or may not contain the 'InversionTime' field. The inclusion of 'InversionTime' depended on other parameters.

Warning and Error ID Changes

Many warning and error IDs have changed from their previous versions. These warnings or errors typically appear during a function call.

Compatibility Considerations

If using warning or error IDs, you might need to change the strings you use. For example, if you turned off a warning for a certain ID, the warning might now appear under a different ID. If you use a try/catch statement in your code, replace the old identifier with the new identifier. There is no definitive list of the differences, or of the IDs that changed.

Functions and Function Elements Being Removed

Functionality	What Happens When You Use This Functionality?	Use This Instead	Compatibility Considerations
`edge` function — K-direction syntax	Errors	`BW = edge(..., direction)`	The syntax `BW = edge(...,K)` has been removed. Use the `BW = edge(...,direction)` syntax instead.
`edge` function — marr-hildreth syntax	Errors	`edge(I, 'marr-hildreth', ...)`	The syntax `edge(I,'marr-hildreth',...)` has been removed. Use the `edge(I,'log',...)` syntax instead.
`imfeature`	Errors	`regionprops`	`imfeature` has been removed. Use `regionprops` instead.
`immovie` — `immovie(D,size)`	Errors	`immovie(X,map)`	`immovie(D,size)` is an obsolete syntax and is no longer supported. Use `immovie(X,map)` instead.
`imrotate` function — `[R,G,B]` output syntax	Errors	`RGB2 = imrotate(RGB1)`	The syntax `[R,G,B] = imrotate(RGB)` has been removed. Use the `RGB2 = imrotate(RGB1)` syntax instead.
`imrotate` — no output argument syntax	Starting in R2011b, no output argument syntax returns result in `ans`.	Call `imshow` to display the output of `imrotate`	Replacement is to call `imshow` to display the output of `imrotate`, like this: `B = imrotate(A,30); imshow(B)`
`imshow` function — `imshow(..., DISPLAY_OPTION)`	Errors	imshow(..., 'InitialMagnification', 100) or imshow(..., 'InitialMagnification', 'fit')	The syntax `imshow(...,'truesize')` has been removed. Use the imshow(..., 'InitialMagnification',100) syntax instead. The syntax `imshow(...,'notruesize')` has been removed. Use the imshow(..., 'InitialMagnification','fit') syntax instead.
`imshow` function — `imshow(x,y,...)` syntax	Errors	`imshow(...,'XData', x,'YData',y)`	The syntax `imshow(x,y,...)` has been removed. Use the `imshow(...,'XData',x,'YData', y)` syntax instead.
`imshow` function — `imshow(I,N)` syntax	Errors	Not applicable	The syntax `imshow(I,N)` has been removed. Your grayscale image will be displayed using 256 shades of gray.
`imview`	Errors	`imtool`	`imview` has been removed. Use `imtool` instead.
`iptsetpref` function — `'ImshowTruesize'` preference	Errors	'ImshowInitialMagnification' preference	Replace all existing instances of `'ImshowTruesize'` with `'ImshowInitialMagnification'`.
`iptsetpref` function — 'ImviewInitialMagnification' preference	Errors	'ImtoolInitialMagnification' preference	Replace all existing instances of `'ImviewInitialMagnification'` with `'ImtoolInitialMagnification'`.
Any calls to `iptsetpref` from within a `startup.m` file	It will do nothing.	Any calls to `iptsetpref` in any session are persistent.	You can safely remove calls to `iptsetpref` from `startup.m` files.
`isbw`	Errors	Not applicable	`isbw` has been removed. No replacement.
`isgray`	Errors	Not applicable	`isgray` has been removed. No replacement.
`isind`	Errors	Not applicable	`isind` has been removed. No replacement.
`isrgb`	Errors	Not applicable	`isrgb` has been removed. No replacement.
`medfilt2` function — `medfilt2(A,[M N],[Mb Nb],...)` syntax	Errors	Not applicable	No replacement.
`montage` — `montage(D,[M N P])` syntax	Errors	Not applicable	Syntax has been removed. No replacement.
`uintlut`	Errors	`intlut`	`uintlut` has been removed. Use `intlut` instead.
`wiener2` function — `wiener2(I,[m n],[mblock nblock],...)` syntax	Errors	`wiener2(I,[m n])` or `wiener2(I,[m n],noise)`	The syntax `wiener2(I,[m n],[mblock nblock])` has been removed. Use the `wiener2(I,[m n])` syntax instead. The syntax `wiener2(I,[m n],[mblock nblock],noise)` has been removed. Use the `wiener2(I,[m n],noise)` syntax instead.

Version 8.0 (R2012a) Image Processing Toolbox

Version 7.2 (R2011a) Image Processing Toolbox

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