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Coding tree unit (CTU) is the basic processing unit of the High Efficiency Video Coding (HEVC) video standard and conceptually corresponds in structure to macroblock units that were used in several previous video standards. CTU is also referred to as largest coding unit (LCU).
History, Measurement & Standards
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coding hevc ctu video efficiency size 64 16 standard also macroblock use sizes units standards unit 32 tests used larger
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