| 摘要 |
PROBLEM TO BE SOLVED: To apply a method for image retrieval of a database and to efficiently retrieve an image which a retrieving person defines and plots by dividing the digital image into specified cells, extracting the average color and the density of the respective cells, comparing extracted information with extracted information of another image to obtain an error from which a feature is extracted by a similar method. SOLUTION: The digital image is divided into the cells of n×m and the two features of the RGB average value of pixels contained in the cells and the black pixel density values contained in the cells after gradations are made into two. They are compared with information obtained by previously dividing the image into the same cells of n×m and extracting the features. Thus, the similarity of the image is calculated. In image comparison, the error of the image is obtained by obtaining the error of the RGB average value and the error of density for the respective cells and adding the errors of the respective cells. When the method is applied to picture retrieval, the image with less error is judged to be a similar image.
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