Image processing method and apparatus, computer program, and storage medium

摘要: This invention is designed to encode the image area information of a multilevel within target size without re-inputting information. For this purpose, from data input unit (101), an generating (1701) generates, for each pixel, constituted by component indicating whether pixel exists in character•line drawing or halftone and chromatic achromatic. A lossless encoding (1705) encodes on block basis, stores resultant third memory (1709). An control (1713) monitors amount code. Upon determining that code exceeds amount, causes perform upon changing components, subsequently which coincide with condition. The codes have already been stored (1709) are temporarily decoded re-encoding (1715), above components changed. then re-encoded