限定色画像の可逆符号化のためのRGB色空間上の予測処理に関する検討

抄録

We previously proposed a lossless coding method for color quantized images. In this method, a 3D position of each representative color in a RGB color space is directly predicted from neighboring pels. This paper compares three kinds of the prediction techniques from the viewpoint of trade-off between prediction efficiency and the required side information.