# Scalar - ScalarQuantization CAP5015 Fall2004 Quantization Definition Quantization a process of representing a large possibly infinite set of values

This preview shows pages 1–6. Sign up to view the full content.

Scalar Quantization CAP5015 Fall 2004

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Quantization Definition: Quantization: a process of representing a large – possibly infinite – set of values with a much smaller set. Scalar quantization: a mapping of an input value x into a finite number of output values, y : Q: x y One of the simplest and most general idea in lossy compression.
Scalar Quantization Many of the fundamental ideas of quantization and compression are easily introduced in the simple context of scalar quantization. An example: any real number x can be rounded off to the nearest integer, say q(x) = round (x) Maps the real line R (a continuous space) into a discrete space.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Quantizer The design of the quantizer has a significant impact  on the amount of compression obtained and loss  incurred in a lossy compression scheme. Quantizer: encoder mapping and decode mapping. Encoder mapping – The encoder divides the range of source into a number of intervals – Each interval is represented by a distinct codeword Decoder mapping – For each received codeword, the decoder generates a reconstruct value
Components of a Quantizer

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 06/09/2011 for the course CAP 5015 taught by Professor Mukherjee during the Spring '11 term at University of Central Florida.

### Page1 / 24

Scalar - ScalarQuantization CAP5015 Fall2004 Quantization Definition Quantization a process of representing a large possibly infinite set of values

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online