Image compression device

摘要

This invention is an image compression device which includes a means to rearrange binary image data in a unit of pixel in accordance with a first conversion table, and a means to encode said rearranged data in accordance with a second conversion table, and which is characterized in that the second conversion table contains a data comprising a code which is added to a predetermined code used for the case where the same logical value continues in the rearranged data and which is based on the number of continuous pixels, a code having the same bit at the leading edge thereof as the leading bit of the predetermined code for the case where the same logical value continues up to the trailing end of the rearranged data, and a code having at its leading edge of a bit different from the leading bit of the predetermined code which is to be used for the data other than above. The above device according to this invention can compress any binary data including line images and dot images at high efficiency and high speed.