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CIS750 – Seminar in Advanced Topics in Computer Science Advanced topics in databases – ... - page 13 / 30

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Quantization

       One-dimensional quantizer interval endpoints and levels indicated on a horizontal line

Quantization is the discretization of a continuous-alphabet source (signal)

X: original value, X’: codeword, Q: quantizer

Distortion:

d(X,X’): a measure of overall quality degradation due to Q

Mean Squared Error (MSE): E[(X-X’)2]

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