| 摘要 |
PROBLEM TO BE SOLVED: To provide an image encoding device generating interpolating data capable of precisely decoding a reduced image into an original image in addition to effectively using the reduced image. SOLUTION: An image encoding device encoding a plurality of blocks one of which is 2×2 pixels defined by pixel X, Xa, Xb, and Xc, comprises: means for generating a reduced image by outputting average value of pixel value of the 2×2 pixels as pixel value of one pixel that is a reduced image of a block of interest; means for generating differential value between pixel value of one pixel that is a reduced image of the block of interest and pixel x of the block of interest; and means for generating interpolating data to decode pixel Xa, Xb, and Xc. The interpolating data includes one of: a first information showing that Xa, Xb, and Xc of the block of interest are matched with a pixel X; a second information showing that the Xa, Xb, and Xc are matched with a pixel X of an adjacent block thereof; or a third information showing pixel value of the Xa, Xb, and Xc. COPYRIGHT: (C)2012,JPO&INPIT |
