彩色图射中颜色不变性和耀斑的分离(Ⅱ)

The separation of color invariance and highlight in color image (Ⅱ)

光源的位置和色品影响景物在摄像机中的成像,耀斑和阴影的出现使一般的分割算法得不到理想的分割结果。本文根据双色反射模型将图像分解成两个本征图像——本色图像(matte image)和耀斑图像(highlighit image)。本色图像是去掉耀斑影响的图像,反映了景物本身的不变性,不受外部因素(光源的位置和色品)的影响。而耀斑图像是只含有耀斑的图像,恰反映了外部因素的影响。并提供景物形状的信息。

Images of objects are influenced by the position and chromatioity of the illuminant. Ideal segmentation result can not be gained by usual segmentation algorielun due to the appearenoe of highlight and shadow. The Dichromatic Reflection Model is used in this paper to separate a color image into two intrinsic images-matte image and highlight image. The matte image is the original image with the highlights removed, reflecting the invariance of the object and being not affected by the environmental factors (such as the position and ohromaticity of the illuminant). While the highlight image is an image of just highlighs, reflecting the enviromental factors only, and providing information for shape from glass. (Fig.1 and Fig. 2: see color inset No. 10～15)