Maximum likelihood estimation of JPEG quantization table in the identification of bitmap compression history

Image Processing, 2000. Proceedings. 2000 International Conference, (2000): 948-951vol.1

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To process previously JPEG coded images the knowledge of the quantization table used in compression is sometimes required. This happens for example in JPEG artifact removal and in JPEG re-compression. However, the quantization table might not be known due to various reasons. In this paper, a method is presented for the maximum likelihood ...更多

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