Image processing apparatus and method for quantizing image data

Image analysis – Histogram processing – For setting a threshold

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382232, 382243, 348405, G06K 936, G06K 938, G06K 946

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058388346

ABSTRACT:
An image processing apparatus which temporarily stores frequency-converted data to quantize the data, encodes the quantized data, further, performs multistage quantization and coding based on quantization error generated in the quantization.

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