| 摘要 |
PURPOSE: To perform an image reduction which never eliminates thin lines in an original image even after the reduction by performing switching to a reduced part with a reduction pattern, deleting the reduced part from an input image, and then outputting the image after the deletion as a reduced image. CONSTITUTION: With the reduction pattern, the position of a dot to be deleted for longitudinal reduction is changed through the switching of switches SW1-SW3, and the reduced part is deleted from the input image. For the deletion of a laterally reduced part, a signal which is divided in frequency in a half through JK flip-flops 52701 to 52704 is inputted to a multiplexer 52709 through one of gates 52705 to 52708. The signal is inputted from the multiplexer 52709 to a gate 52710. To the other terminal of the gate 52710, DS'* is inputted to obtain a masked output signal and the reduction is performed. The image after the longitudinal and lateral deletion is outputted as the reduced image by a reduction device. Therefore, the image reduction is performed without disappearance. |
