| 摘要 |
An image processing method for deciding the quantization data on each image plane of the image data composed of at least first and second image planes includes performing a quantization process for the sum total value of pixel values existing at the same position on the first and second image planes, using a first threshold, to decide a quantized value, and performing an arithmetical operation on the decided quantized value, the pixel value of any one of the first and second image planes and a second threshold, to generate the quantization data on each of the first and second image planes.
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