Color image processing method
First Claim
1. A color image searching method for searching an image in a database based on a color feature of a query image, comprising the step of (a) performing a search based on representative colors of a query image and their ratio in the database indexed by assigning representative colors of a database image to a color space divided into a plurality of regions and identifying matched data in which the difference in the ratio of the representative colors of the query image is less than a predetermined threshold value in a selected data group indexed into a selected region.
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Abstract
A color image processing method is provided. The color image processing method includes the step of: (a) indexing a color image by assigning representative colors of an image to a color space divided into a plurality of regions. The color image processing method may be applied to object-based image processing such as MPEG-7, and fast search and retrieval of multimedia content can be made.
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Citations
19 Claims
- 1. A color image searching method for searching an image in a database based on a color feature of a query image, comprising the step of (a) performing a search based on representative colors of a query image and their ratio in the database indexed by assigning representative colors of a database image to a color space divided into a plurality of regions and identifying matched data in which the difference in the ratio of the representative colors of the query image is less than a predetermined threshold value in a selected data group indexed into a selected region.
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14. A color image searching method for searching an image in a database based on a color feature of a query image, comprising the steps of:
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(a-1) obtaining representative colors of given query regions and their percentages; (a-2) selecting a lattice point corresponding to the representative colors obtained in step (a-1) in a three-dimensional color space divided into a plurality of lattices; (a-3) selecting a data group corresponding to the selected lattice point from the database in which a region identifier expressing representative colors of data images, their ratio, and serial numbers of an image and a region is stored as data; and (a-4) identifying matched data in which the difference in the percentages of the representative colors of the query regions is less than a predetermined threshold value in the selected data group. - View Dependent Claims (15, 16)
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17. A computer readable medium for storing a program performing a color image searching method, said medium including computer readable program code means for:
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(a-1) obtaining representative colors of given query regions and their percentages; (a-2) selecting a lattice point corresponding to the representative colors obtained in step (a-1) in a three-dimensional color space divided into a plurality of lattices; (a-3) selecting a data group corresponding to the selected lattice point from the database in which a region identifier expressing representative colors of data images, their ratio, and serial numbers of an image and a region is stored as data; and (a-4) identifying matched data in which the difference in the percentages of the representative colors of the query regions is less than a predetermined threshold value in the selected data group. - View Dependent Claims (18, 19)
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Specification