Method for detecting shadow of object
First Claim
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1. A shadow detection method, comprising:
- detecting a moving object in a plurality of continuous images;
calculating a histogram of a color variation of the moving object in each of the images;
accumulating the histograms of the color variation in the images to obtain a cumulative histogram;
estimating a distribution of the color variation in the cumulative histogram to obtain a shadow distribution function; and
determining whether each pixel in a received image belongs to a shadow by using the shadow distribution function.
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Abstract
A method for detecting a shadow of an object in an image is provided. A moving object in a plurality of continuous images is detected. A histogram of a color variation of the moving object in each of the images is calculated. The histograms of the color variation are accumulated to obtain a cumulative histogram. A distribution of the color variation in the cumulative histogram is estimated to obtain a shadow distribution function. Whether each pixel in a received image belongs to the shadow is determined by using the shadow distribution function.
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Citations
17 Claims
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1. A shadow detection method, comprising:
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detecting a moving object in a plurality of continuous images; calculating a histogram of a color variation of the moving object in each of the images; accumulating the histograms of the color variation in the images to obtain a cumulative histogram; estimating a distribution of the color variation in the cumulative histogram to obtain a shadow distribution function; and determining whether each pixel in a received image belongs to a shadow by using the shadow distribution function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification