均等色空間における系統的画像符号化の研究

抄録

We propose a systematical color image coding which will be very important in near future image communication via ISDN. The systematic color image coding is systematically designed and coded based on the Picture Quality Scale (PQS). PQS is defined as a function of the color difference which is expected to be defined as an Euclid distance of signal error between the original image signal and the decoded signal. We should start the follwing detailed discussions, (a) the uniformity of HVC color scale, (b) the mathematical two-way transformation between (R, G, B) color space and (H, V, C) color space, (c) the two-war transformation between (R, G, B) color space and (Y, C, M, K) color space. Especially a step of development of VQ codings is considered ; (1) codings of 3-dimensional VQ of Value (V), Chroma (C) and Hue (H), (2) higher dimensional VQ coding considering not only H, V, C but the autocorrelation of sampled image data, and (3) segmentation codings combined with the coding (1). Authors strongly desire that the international friendship should be maintained during the course of the development.