High Efficiency Video Codingee3.mokpo.ac.kr/khchoi/Multimedia/Lecture5-HEVC2.pdf · 2018. 5. 9. ·...
Transcript of High Efficiency Video Codingee3.mokpo.ac.kr/khchoi/Multimedia/Lecture5-HEVC2.pdf · 2018. 5. 9. ·...
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High Efficiency Video Coding
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HEVC (encoder)
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HEVC (encoder) 1) Each picture is split into block shaped regions - decoder has the same
block info
2) First picture (and the firstpicture of each random access point into a sequence)is coded using intra-pictureprediction
3) The remaining picture is coded using inter-picturepredictive coding mostly- select reference picture- motion vector
4) Encoder duplicates decoder processing loop(shaded boxes)
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HEVC (encoder)2) First picture (and the firstpicture of each random access point into a sequence)is coded using intra-pictureprediction - example of intra-picturecoding process (red)
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HEVC (encoder)2) decoding example - after intra-picture estimation,the residual image is transform coded
Þ In decoder, this process is done in inverse (blue)
Decoded pictures is stored in buffer for prediction of subsequent pictures