Importance

Loading Importance Indicators...

Abstract

In an image processor, a decider decides based on image data of pixels included in a block whether the block has character attribute of non-character attribute, a first encoder encodes the image data with block truncation coding, and a second encoder encodes the image data which have been encoded by the first encoder. For a block of character attribute, the binarized data binarized by the binarizer are encoded by the first and second encoders. For a block of non-character attribute, the image data are encoded by the first and second encoders without binarization. In a different image processor, it is decide whether image data of pixels in an area consisting of a plurality of blocks are all character, all ground or mixture of character and ground. Then, an encoder encodes the image data in each block differently according to the decision.

Loading the Abstract Image...

First Claim