ENCODER, INFORMATION MANAGEMENT APPARATUS, DECODER, IMAGE FORMING APPARATUS, ENCODING PROGRAM, INFORMATION MANAGEMENT PROGRAM, DECODING PROGRAM, AND STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To decrease a storage capacity and to reduce the processing time necessary for generating compression codes.

SOLUTION: In the case of image processing by a digital copying machine 1 or the like for example, a code sequence is acquired by applying compression coding to information related to a discrimination reference value by each of regions, as to the regions wherein the variation amount of the discrimination reference value being a particular component in a pixel value configuring image data is a specified threshold value or below. The code sequence is acquired by applying compression coding to the image data by each of the regions, as to regions wherein the variation value exceeds the threshold amount to relieve a load necessary for the processing of the regions wherein the variation amount of the discrimination reference value in the regions is the specified threshold value or below more than that of the regions wherein the variation amount exceeds the threshold value.

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