A novel feature extraction method called three-structure descriptor(TSD)used in HSV color space is proposed to address the problem that the image description methods based on texton pay undue attention to the color description so reduce the performance of image retrieval due to directly extracting other features in color space. The proposed method extracts color and texture information in HSV color space and the same importance of both the color and texture is taken into account while the excessive interference of color information is avoided. TSD uses the information change among pixels to represent the local spatial structure information in texture feature extraction
which solves the problem that the traditional local pattern methods disregard the spatial correlation in local structure and captures more information regarding to spatial structure information. Experimental results show that the retrieval precisions of the proposed method reach 78.08%
38.12% and 52.12% on the Corel-1000
Corel-5000 and Corel-10000 databases respectively
and its retrieval precisions are higher than those of existing methods based on texton.
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