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This document proposes a method for measuring blocking artifacts in images compressed using discrete cosine transform (DCT) coding in the DCT domain. Blocking artifacts appear as discontinuities at block boundaries due to quantization in DCT-based compression standards. The method models blocking artifacts as a 2D step function and extracts parameters needed to measure the artifacts directly from DCT coefficients, avoiding full decompression. Experimental results show the proposed DCT-domain method effectiv

Author

jin11004

Language

EN