| 摘要 |
PURPOSE:To increase the image compressibility regardless of the coding direction of an original and to attain the run length coding with high efficiency, by using an image turning means which reads out the image signal and turns it in a prescribed direction. CONSTITUTION:When the image data is turned, a CPU 22 writes successively the bit data of X and Y directions to a page memory P1 of an RAM 24 for the image data read by an original reader 2. Then the CPU 22 reads the 0-th data out of the memory P1 to a turning circuit 26 and then writes successively the data on the following addresses after writing each bit data to a page mem ory P2. The operations are carried out with a single piece of image data. Thus the coding direction is turned by 90 deg.. This can increase the image compressibility regardless of the coding direction of an original.
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