Combining multiple cues in a visual object detection system
First Claim
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1. A method for detecting visual objects by employing multiple cues, comprising the steps of:
- statistically combining pixel information into a saliency map by weighting multiple cues of a pixel'"'"'s status using noise estimates as a basis for determining a statistical probability that a pixel is a foreground pixel or background pixel; and
thresholding the statistically combined pixel information to make decisions with respect to the foreground/background pixels.
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Abstract
Systems and methods for detecting visual objects by employing multiple cues include statistically combining information from multiple sources into a saliency map, wherein the information may include color, texture and/or motion in an image where an object is to be detected or background determined. The statistically combined information is thresholded to make decisions with respect to foreground/background pixels.
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Citations
32 Claims
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1. A method for detecting visual objects by employing multiple cues, comprising the steps of:
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statistically combining pixel information into a saliency map by weighting multiple cues of a pixel'"'"'s status using noise estimates as a basis for determining a statistical probability that a pixel is a foreground pixel or background pixel; and
thresholding the statistically combined pixel information to make decisions with respect to the foreground/background pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for detecting visual objects by employing multiple cues, comprising the steps of:
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for each pixel, determining a probability for each of a plurality of information sources for making a determination as to a status of the pixel using noise estimates as a basis for determining the probability that a pixel is a foreground pixel or background pixel;
statistically combining the probabilities from all of the information sources to form a saliency map to determine whether a pixel belongs to a background image or an object; and
thresholding the statistically combined information to make decisions with respect to foreground/background pixels. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for detecting visual objects by employing multiple cues, comprising:
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a video source which provides images to be processed;
a probability determination module which determines a probability for a plurality of cues based upon available information to determine if a pixel belongs to an object or a background, wherein the cues include a combination of pixel-by-pixel cues and local neighborhood cues; and
a statistical combiner which combines the probabilities from each of the plurality of cues into a saliency map such that statistically combined information is employed to make decisions with respect to foreground or background pixels. - View Dependent Claims (28, 29, 30)
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31. A system for detecting visual objects by employing multiple cues, comprising:
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a video source which provides images to be processed;
a probability determination module which determines a probability for a plurality of cues based upon available information to determine if a pixel belongs to an object or a background;
a noise estimator, which estimates noise for each cue, wherein the noise estimate is employed in deriving probabilities for the cues; and
a statistical combiner which combines the probabilities from each of the plurality of cues into a saliency map such that statistically combined information is employed to make decisions with respect to foreground or background pixels. - View Dependent Claims (32)
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Specification