IMAGE PROCESSING APPARATUS AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To reduce a size of a work memory between processing modules in an image processing apparatus.SOLUTION: An expansion rotation processing module 11 reads and expands a plurality of pieces of compression subband data CSBij corresponding to a plurality of subbands in the same position j in a main scanning direction on a plurality of bands in compressed image data compressed for each subband, and rotates the plurality of pieces of subband data obtained by expansion and stores the plurality of pieces of rotated subband data in a work memory 12. A rotation compression processing module 16 reads the plurality of pieces of subband data which are subjected to image processing by image processing modules 13-1 to 13-N and stored in a work memory 15 to rotate them, and compresses the plurality of pieces of rotated subband data.