Method for retrieving image by using multiple features per image subregion
First Claim
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1. A method for retrieving an image comprising:
- dividing a reference image into subregions, extracting a regional representative color and a confidence measure of the regional representative color for each of the subregions, and extracting a second feature information of the reference image;
comparing the confidence measure of the regional representative color for each subregion to a predetermined threshold value; and
determining a similarity between the reference image and a target image using the regional representative color if the confidence measure of the regional representative color for a subregion is greater than the threshold value, and otherwise, determining a similarity between the reference image and a target image using the second feature information of the reference image.
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Abstract
An efficient method for retrieving an image using multiple features for an image subregion is disclosed. The present invention obtains a regional representative color for the subregions and uses the regional representative color during a retrieval of a similar image if the regional representative color is reliable. Otherwise, a feature information other than the regional representative color is used.
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Citations
19 Claims
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1. A method for retrieving an image comprising:
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dividing a reference image into subregions, extracting a regional representative color and a confidence measure of the regional representative color for each of the subregions, and extracting a second feature information of the reference image;
comparing the confidence measure of the regional representative color for each subregion to a predetermined threshold value; and
determining a similarity between the reference image and a target image using the regional representative color if the confidence measure of the regional representative color for a subregion is greater than the threshold value, and otherwise, determining a similarity between the reference image and a target image using the second feature information of the reference image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for retrieving an image in an image retrieval system comprising:
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dividing a reference image into grid regions;
extracting a regional representative color and a confidence measure of the regional representative color for each grid region; and
performing a similarity examination between the reference image and a target image using the regional representative color and the confidence measure of the regional representative color for each grid region, wherein the performing a similarity examination uses the regional representative color if said confidence measure of the regional representative color is greater than a predetermined threshold value, and otherwise the performing a similarity-examination uses a feature information of the reference image other than the regional representative color. - View Dependent Claims (17, 18, 19)
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Specification