Learn more about Video and Image Processing Blockset

Version 2.2 (R2006b) Video and Image Processing Blockset

This table summarizes what's new in Version 2.2 (R2006b):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	Yes Summary	Bug Reports Includes fixes	Printable Release Notes: PDF Current product documentation

New features and changes introduced in this version are:

Contrast Adjustment Block Linearly Scales Pixel Values

The Contrast Adjustment block adjusts the contrast of an image by linearly scaling the pixel values between upper and lower limits. For more information, see the Contrast Adjustment block reference page.

Demosaic Block Converts Bayer's Format Images to RGB

The Demosaic block takes in images in Bayer's format and outputs RGB images. For more information, see the Demosaic block reference page.

Trace Boundaries Block Returns Object Boundary Pixel Coordinates in Binary Images

The Trace Boundaries block traces object boundaries in binary images. For more information, see the Trace Boundaries block reference page.

Blob Analysis Block Outputs Orientation Angles in Radians

The Blob Analysis block now outputs a vector of angles in radians at the Orientation port. Previously, the block output a vector of angles in degrees. This change makes the block consistent with other blocks in Video and Image Processing Blockset. For more information, see the Blob Analysis block reference page.

Compatibility Considerations

If you performed any calculations with the Orientation port output, you must take into account that the angle values are now in radians.

Draw Markers Block Supports Antialiasing

You can now draw markers using an antialiasing algorithm if you select the Use antialiasing check box. For more information, see the Draw Markers block reference page.

From Multimedia File Block Supports Uncompressed AVI Files on UNIX

This block now supports uncompressed AVI files on UNIX platforms. As a result, you no longer need to use separate blocks to import multimedia files if you are working on both Windows and UNIX platforms.

Read AVI File Block Obsoleted

The From Multimedia File block now supports AVI files on UNIX platforms. Consequently, the Read AVI File Block has been obsoleted to remove duplicate functionality.

Compatibility Considerations

Replace any instances of the Read AVI File block with the From Multimedia File block.

Resize Block Enhanced

The Resize block has been improved in three ways:

• You can now resize a particular region of an image if you select the Enable ROI processing check box.

• The block's algorithm is optimized when the Resize factor in % parameter is an integer value.

• The block now uses a different axis for resampling. This change reduces edge artifacts and makes the block output more consistent with the output of the imresize function in Image Processing Toolbox.

For more information, see the Resize block reference page.

Compatibility Considerations

Due to the different axis that is used for resampling, you might observe different block output as compared to previous releases.

Shear and Translate Blocks Support Background Fill Values

You can now specify the intensity of the background pixels.

Abandoned Object Detection Demo Illustrates a Tracking Algorithm

You can find this demo in the Detection and Tracking library. Open the demo model by typing vipabandonedobj at the MATLAB command prompt.

Concentricity Inspection Demo Examines a Cross-Section of Optical Fiber

You can find this demo in the Video Analysis library. Open the demo model by typing vipconcentricity at the MATLAB command prompt.

Lane Departure Warning Demo Supports Fixed Point

This demo is now available in a fixed-point version. You can find this demo in the Detection and Tracking library. Open the demo model by typing vipldws at the MATLAB command prompt.

Pattern Matching Demo Provides Additional Functionality

Now, in addition to changing the pyramiding factor, you can change the number of targets to track and specify the domain in which to perform the cross-correlation.

People Tracking Demo Supports Fixed Point

This demo is now available in a fixed-point version. You can find this demo in the Detection and Tracking library. Open the demo model by typing viptrackpeople at the MATLAB command prompt.

Demos Might Require Downloading Source Files

For some demos, you must download source files from The MathWorks Web site. When you attempt to run these demos, a dialog box opens and asks you if you want to download files from the MathWorks Web site. If you click Yes, a Web page that explains how to download the necessary files opens. If you click No, the dialog box closes, and you are unable to run the demo.

Compatibility Considerations

The Scene Change Detection, Traffic Warning Sign Recognition, and Abandoned Object Detection demo source files have been moved to the MathWorks Web site. Before you can run these demos, you need to download the required video files.

Version 2.3 (R2007a) Video and Image Processing Blockset

Version 2.1 (R2006a) Video and Image Processing Blockset

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