UGC NET CSE | June 2012 | Part 3 | Question: 19

Question

The quantiser in an image-compression system is a

• A. lossy element which exploits the psychovisual redundancy
• B. lossless element which exploits the psychovisual redundancy
• C. lossy element which exploits the statistical redundancy
• D. lossless element which exploits the statistical redundancy

Answer 1

Answer : lossy element which exploits the psychovisual redundancy

Quantization, involved in image processing, is a lossy compression technique achieved by compressing a range of values to a single quantum value. When the number of discrete symbols in a given stream is reduced, the stream becomes more compressible. 

Answer Reference is Wikipedia 

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