摘要 |
PURPOSE:To prevent a line on a border part between images from occurrence, by a method wherein after image memory over a plurality of divided mutual adjacent scanning regions are stored in memory, the image data stored in the memory are processed by an error diffusion method. CONSTITUTION:When a form of a diffusion matrix is to be considered, data of one scan content, for instance, data of a region (a) are stored in memory, and signal processing direction conversion of main scanning and subsidiary scanning is performed. That is, after a signal is converted by using the memory, binary processing of error diffusion or the like is performed, and reverse signal conversion is performed by using the memory again. By performing such a process as abovementioned, image data partially read can be treated as a sheet of continuous images, and a problem of an 'line' having been generated on the boundary between the regions abovementioned can be solved. |