| 摘要 |
An image processing device for effecting resolution conversion includes an image signal memory (1) for storing the input pixel levels Ixy, and an enlargement/reduction calculator circuit (2) for calculating a grey level GXY of each output pixel corresponding to the average of the areas of input pixel intersecting with the output pixel. The error occurring upon quantization by a quantizer (4) is calculated by an error calculator (5), and, after being delayed by one pixel by an error memory (6), is fed back to a image signal compensator circuit (3) to be added to the grey level S3 to obtain the compensated gray level S4, which is quantized by the quantizer (4) to obtain the quantized level OXY.
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