Picture retrieving apparatus and method which converts orthogonal transform coefficients into color histogram data
First Claim
1. A picture retrieving apparatus, comprising:
- a first orthogonal coefficient generating section which outputs a set of orthogonal coefficients of each of a plurality of pictures as a retrieval target picture;
a second orthogonal coefficient generating section which outputs a set of orthogonal coefficients of a query picture; and
an orthogonal transform coefficient similarity calculator which calculates a similarity between said set of orthogonal transform coefficients of said query picture and said set of orthogonal transform coefficient of said retrieval target picture.
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Abstract
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 a color histogram information 41 of a query picture and a color histogram information 25 generated by the picture feature amount converter 2. It unifies the kinds of the picture feature amounts to calculate the similarity between the picture feature amounts. Thus, it can specify the picture similar to the query picture from the retrieval target picture, on the basis of the calculated similarity.
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Citations
10 Claims
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1. A picture retrieving apparatus, comprising:
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a first orthogonal coefficient generating section which outputs a set of orthogonal coefficients of each of a plurality of pictures as a retrieval target picture;
a second orthogonal coefficient generating section which outputs a set of orthogonal coefficients of a query picture; and
an orthogonal transform coefficient similarity calculator which calculates a similarity between said set of orthogonal transform coefficients of said query picture and said set of orthogonal transform coefficient of said retrieval target picture. - View Dependent Claims (2, 3, 4, 5)
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6. A picture retrieving method, comprising:
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(a) outputting a set of orthogonal coefficients of each of a plurality of pictures as a retrieval target picture;
(b) outputting a set of orthogonal coefficients of a query picture; and
(c) calculating a similarity between said set of orthogonal transform coefficients of said query picture and said set of orthogonal transform coefficient of said retrieval target picture. - View Dependent Claims (7, 8, 9, 10)
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Specification