期刊名称：International Journal of Image Processing (IJIP)
电子版ISSN：1985-2304
出版年度：2012
卷号：6
期号：5
页码：349-356
出版社：Computer Science Journals
摘要：The paper shows performance comparison of various color spaces with Image transforms alias Walsh, DCT, DST & Haar for 'Color to Gray and Back'. The color information of the image is embedded into its gray scale version/equivalent [1][2][3]. Instead of using the original color image for storage and transmission, matted gray (Gray scale version with embedded color information) can be used, resulting into better bandwidth or storage utilization. Total twenty-eight variations of the algorithm for 'Color to Gray and Back' are proposed and evaluated for qualitative performance using four image transforms and seven color spaces (RGB, YCbCr, YCgCb, YUV, YIQ, XYZ and Kekre's LUV) [4]. Among all considered image transforms and color spaces, Discreet Cosine Transform (DCT) gives better performance with YCbCr color space in 'Color to gray and Back'.
关键词：Colorization; Color to Gray and Back; Information Hiding; Color Embedding and Retrival; Color Space; Steganography
