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Why we need to round result of division in the quantization

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Reference no: EM131311364

1. In JPEG, explain why we need to round the result of division in the quantization step.

2. Explain why the combination of quantization/dequantization steps in JPEG is a lossy process even though we divide each element of the matrix M by the corresponding value in matrix Q when quantizing and multiply it by the same value when dequantizing.

Reference no: EM131311364

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