Image classification method
A classification method and image technology, which are applied in the fields of instrument, calculation, character and pattern recognition, etc., to achieve the effect of fast coding, shortening training time, and improving classification accuracy
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[0024] In order to describe the content of the present invention conveniently, some terms are explained first.
[0025] Feature area: The feature area is a grid that is evenly divided on the image, and these grids contain the edge texture and direction information of the image. These information are very stable for a specific image, they represent the general outline of the image, and have good discrimination.
[0026] Feature descriptor: The feature descriptor (Descriptor) is a quantitative data description of the local features near the feature area. A good feature descriptor should be able to fully express the shape and texture structure of the local image of the feature point, with high robustness, uniqueness and distinction. In layman's terms, it is to use a vector to represent the characteristics of a local area.
[0027] Sparse coding: Due to the sparsity of natural image signals, the image signal I(x,y) can be decomposed into a linear combination of a set of bases. ...
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