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Block Truncation Coding

Block Truncation Coding (BTC) is a type of lossy image compression technique for greyscale images. It divides the original images into blocks and then uses a quantizer to reduce the number of grey levels in each block whilst maintaining the same mean and standard deviation. It is an early predecessor of the popular hardware DXTC technique, although BTC…

Standards, Compression procedure & Overview

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Compression procedure

PixelMean
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Overview

Lossy image compressionGreyscaleGrey levelsMeanStandard deviation
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Overview

Compression procedure

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Block Truncation Coding

Nodes16
Edges15
Triples4
Avg. degree1.88
Density0.125
Components1

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Block Truncation Coding

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related to External links · 3
Block Truncation Coding → Media, Wikimedia Commons, Wiktionary-logo-en-v2
see also · 1
Block Truncation Coding → Color Cell Compression

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Important terminology

mean block values btc compression standard deviation also images pixel pixels using displaystyle image algorithm first ambtc two begin end

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SubjectPredicateObjectConfidenceSrc
Block Truncation Codingrelated to External linksWiktionary-logo-en-v20.60section
Block Truncation Codingrelated to External linksMedia0.60section
Block Truncation Codingrelated to External linksWikimedia Commons0.60section
Block Truncation Codingsee alsoColor Cell Compression0.60section

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