Method and apparatus for determining regions of interest in...

Details Method and apparatus for determining regions of interest in... Method and apparatus for determining regions of interest in...

2007-01-09

2007-01-09

Mancuso, Joseph (Department: 2624)

Image analysis

Histogram processing

C382S170000, C382S190000, C382S224000

Reexamination Certificate

active

10398528

ABSTRACT:
A method and apparatus for ranking pixels in an image by degrees of saliency, including: defining (200, 210) a plurality of regions for each of a plurality of pixels in an image, where each of the regions for any one of the pixels at coordinates (x,y) has a different scale s, calculating (230) an entropy value for each of the regions, identifying (260) any of the regions as having a peak entropy value, weighting (270) the peak entropy value of each of the peak entropy regions by a weight value corresponding to a peak width estimate of the peak entropy value, and ranking (290) the regions by the weighted peak entropy values, thereby ranking the pixels. The invention can be included in a method and apparatus for image transmission, providing preferential transmission of salient portions of the image.

REFERENCES:
patent: 4922915 (1990-05-01), Arnold et al.
patent: 5588071 (1996-12-01), Schultz
patent: 5982917 (1999-11-01), Clarke et al.
patent: 6735330 (2004-05-01), Van Metter et al.
patent: 6895103 (2005-05-01), Chen et al.

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