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21 de dezembro de 201823 de dezembro de 2018

Modified Huffman coding

Modified Huffman coding is used in fax machines to encode black on white images (bitmaps). It combines the variable length codes of Huffman coding with the coding of repetitive data in run-length encoding.

External links

"Modified Huffman coding from UNESCO". Archived from the original on 2002-06-28. http://web.archive.org/web/20020628195336/http://www.netnam.vn/unescocourse/computervision/104.htm.

Data compression methods

Information theory

Entropy encoding	Shannon–Fano Shannon–Fano–Elias Huffman Adaptive Canonical Modified Arithmetic Range Golomb Universal Gamma Exp-Golomb Fibonacci Levenstein

Dictionary	RLE Byte pair encoding DEFLATE Lempel–Ziv LZ77/78 LZSS LZW LZWL LZO LZMA LZX LZRW LZJB LZS LZT ROLZ Statistical Lempel Ziv

Others	CTW BWT PPM DMC Delta

Theory	Companding Convolution Dynamic range Latency Sampling Nyquist–Shannon theorem Sound quality

Audio codec parts	LPC LAR LSP WLPC CELP ACELP A-law μ-law ADPCM DPCM MDCT Fourier transform Psychoacoustic model

Others	Bit rate CBR ABR VBR Speech compression Sub-band coding

Terms	Color space Pixel Chroma subsampling Compression artifact Image resolution

Methods	RLE Fractal Wavelet EZW SPIHT LP DCT Chain code KLT

Others	Test images PSNR quality measure Quantization

Terms	Video characteristics Frame Frame rate Interlace Frame types Video quality Video resolution

Video codec parts	Motion compensation DCT

Others	Video codecs Bit rate CBR ABR VBR

See Compression formats for formats and Compression software for codecs

fonte: https://web.archive.org/web/20120917140216/https://en.wikipedia.org/wiki/Modified_Huffman_coding

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