Intra-frame coding: Difference between revisions

Revision as of 14:20, 24 September 2008

Revision as of 16:18, 12 February 2009

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== Coding process ==

Data are usually read from videocamera or videocard as YCbCr data format (often wrong marked as YUV that should be used for analog data only). YUVThe datacoding process varies greatly depending on which encoder is partitionedused into(e.g.: [[MacroblocksJPEG|macroblockJPEG]], of 8x8 (.[[H.264/MPEG-4 AVC|H.264]]), pixels.but Eachthe macroblockmost iscommon transformedsteps withusually include: partitioning into [[Macroblock|macroblocks]], transform (e.g.: [[Discrete cosine transform|DCT]] then quantised, or [[ZIG-ZAGDiscrete wavelet transform|wavelet]]), [[RLEQuantization_(image_processing)|quantization]], and [[HuffmanEntropy codingencoding|Huffmanentropy encoding]] --> 100101001.

The intra-coding is performed at decoder side, upon receiving the so encoded data stream.

== See also ==