A system and method for utilizing a graphic equalizer in performing image search procedures includes a histogram calculator for creating sets of histograms that represent corresponding images. A graphic equalizer is configured to select weighting parameters for performing the image search procedure. A feature detector calculates distance measures between histogram comparison pairs of a query image and subject images. The feature detector applies the weighting parameters to the distance measures ...

The invention determines the degree of similarity between a target image and each of a plurality of reference images. The measure used for the degree of similarity between images is based on the human perceptive system, so that images that appear to a human to be similar in color have a higher similarity measure than images that appear to a human to be dissimilar in color. Each of the most populous colors of each partition of the target image is associated with a color in a corresponding partiti...

The picture retrieving apparatus includes: an orthogonal conversion coefficient memory 13 of a retrieval target picture storing an orthogonal conversion coefficient of a picture targeted for a retrieval; a picture feature amount converter 2 converting an orthogonal conversion coefficient 21 read from the orthogonal conversion coefficient memory 13 of the retrieval target picture into a color histogram information; and a color histogram similarity calculator 4 calculating a similarity 42 between ...

Methods and apparatus for representing images using a compact color feature vector. A color feature vector includes a color element for each color in an image-specific set of colors. A color element includes a color identifier and a relative color occurrence. A compact color feature vector may be used in a content-based image retrieval (CBIR) system. The CBIR system includes an image data store containing multiple images. A color feature vector data store includes a variable-length color feature...

The present invention permits to determine an image characteristic amount for efficiently searching an image without affecting a bad influence upon searching accuracy. First image characteristic amount data is extracted. Second image characteristic amount data is extracted. Then, a distance between two image characteristic amount data is calculated. Further, the calculated distance is compared with a threshold value. If the distance is smaller than the threshold value, the image characteristic a...

A method and system that allows a user to find images using a query by example is disclosed. Images similar to the selected image are retrieved based on color or shape. Each clip in a clip catalog is assigned a color metric and a wavelet, i.e., shape, metric. The selected clip is also assigned a color metric and a wavelet metric. Those clips that are most similar based on either the wavelet metric or the color metric are returned to the user.

Colors are specified within the individual glyphs of a font by means of an indirect approach which employs multiple tables. The data values for individual pixels of a glyph identify entries in an index table, which pertains to a subset of all available colors. The entries in the index table map to a complete set of colors that are specified in a color table. As a result of this structure, the amount of data that is required to specify the individual pixels of a glyph can be minimized to the numb...

Brightness feature information on the brightness of an image to be processed is extracted, and color feature information on the color of the image is extracted. A determination unit determines whether color information of the image to be processed is sufficient. When color information of a reference comparison image is sufficient as a result of determination, a color feature information comparison unit performs a similarity comparison between color feature information of the reference comparison...

The present invention relates to a multimedia retrieval system and a method thereof which is capable of performing a multimedia data retrieval among different systems using color histograms constructed with different color spaces and color quantization methods, in particular to a content-based multimedia retrieval system and a method thereof which is capable of retrieving multimedia data among different systems, by extracting or converting a color histogram of a query image or a color histogram ...

The picture retrieving apparatus includes: an orthogonal conversion coefficient memory 13 of a retrieval target picture storing an orthogonal conversion coefficient of a picture targeted for a retrieval; a picture feature amount converter 2 converting an orthogonal conversion coefficient 21 read from the orthogonal conversion coefficient memory 13 of the retrieval target picture into a color histogram information; and a color histogram similarity calculator 4 calculating a similarity 42 between ...