Spatial Activity of an Image

Version 1.0.0.0 (1.66 KB) by Bjoern Eskofier
Computes a spatial activity index for images
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1.7K Downloads
Updated 14 Sep 2006

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I worked a lot with visual stimuli, and this function computes a measure for image activity, that is derived from the amount of edges in an image.
It was proposed in ITU-T Document P.910 for single images (see pages 12, 15, 22-24 in that document). Please change the code to your own needs.
Part of the results derived from this and other measures can be found in "Barkowsky, Eskofier: Influence of the presentation time on subjective votings of coded still images", ICIP 2006

Cite As

Bjoern Eskofier (2024). Spatial Activity of an Image (https://www.mathworks.com/matlabcentral/fileexchange/12269-spatial-activity-of-an-image), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14SP2
Compatible with any release
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Version Published Release Notes
1.0.0.0