| 摘要 |
A method of seeking images in a database, each of the stored images being associated with a data of a first type representing a characteristic of the visual content of the image, comprises the steps of: associating with each new a new image to be stored in the database, a data of a second type representing the location of at least one region of interest in the new image; receiving a data of the second type representing the location of at least one region of interest in the example image; obtaining a data of the first type associated with the example image; calculating a similarity between the example image and each of the stored images, the similarity being calculated from the data of the first type and of the second type associated respectively with the example image and with the stored image; and supplying at least one image from the database according to its degree of similarity with the example image. According to a second aspect, a method of indexing digital images comprises, for each image Im to be indexed, the steps of dividing the image plane in a predefined number N of blocks; extracting from each of the blocks a data of the first type; defining in the image at least one region of interest, and obtaining a data of the second type; calculating for each of the blocks a coefficient indicative of a degree of presence in the block under consideration of the image, of at least one region of interest; associating, with the image, an index composed of a first vector having N components, each of which being one of the data of the first type, and a second vector having N components, each of which being composed of one of said coefficients.
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