2차원 투영 맵에 의한 디지털 영상의 컬러 특징 표현
Color feature representation of digital image by 2D projection maps
2차원투영맵 디지털영상 컴퓨터과학;
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The most traditional color feature representation for content based image retrieval is the color histogram. The color histogram describes the distribution of colors in the color space of an image. Small changes in the scene may cause important modifications of the color histogram and two color images may be considered to be very different from each other even though they have completely related semantics. We proposed a new method of color feature representation based on the RGB color space. The proposed method consists of the three 2-dimensional projection maps evaluated by projecting the RGB color space map on the RG, GB, and BR surfaces in 3-dimenstional RGB color space. The experimental results reveal that the proposed method is less sensitive to small changes in the scene and has higher retrieval performances than the traditional color histogram.