Image signal analyzing system
First Claim
1. An image signal analyzing system comprising:
- a block extracting means for sequentially extracting blocks including a predetermined number of pixels from an input image;
a storage means for storing a set of differential representative vectors, each obtained from a difference between representative vectors at a same stage of a binary tree having a plurality of stages of said representative vectors;
a plurality of stages of inner product computing means for performing computation of inner products between said extracted blocks and said respective differential representative vectors of said plurality of stages; and
an inner product result holding means for holding results of said inner products obtained for every stage of said binary tree by said inner product computing means, as an index expressing a shape of said input image.
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Abstract
An image signal analyzing system capable of accomplishing shape analysis for processing or coding an image with easy, by space division using two orthogonal representative vectors, or by differential representative vectors given by the difference between representative vectors. With such a system, inner products between mean separated blocks produced by a mean separated unit and a differential representative vector set stored in a memory in advance are computed by inner product computing unit disposed into a binary tree shape having n stages. Positive/negative signs expressing resulting inner products in the respective stages of the binary tree computed by the inner product computing unit are held, as indexes, by n index holding means sequentially, and an index representing the shape of input image information is obtained from the n indexes held by the index holding unit.
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Citations
11 Claims
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1. An image signal analyzing system comprising:
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a block extracting means for sequentially extracting blocks including a predetermined number of pixels from an input image; a storage means for storing a set of differential representative vectors, each obtained from a difference between representative vectors at a same stage of a binary tree having a plurality of stages of said representative vectors; a plurality of stages of inner product computing means for performing computation of inner products between said extracted blocks and said respective differential representative vectors of said plurality of stages; and an inner product result holding means for holding results of said inner products obtained for every stage of said binary tree by said inner product computing means, as an index expressing a shape of said input image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification