New ABT Results using CABAC VCEG-N49

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New ABT Results using CABAC VCEG-N49

• Mathias Wien
• Institut für Nachrichtentechnik
• RWTH Aachen, Germany

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Adaptive Block Transforms
Macroblock Modes

• Proposal
• Adaptive Block Transforms
• Transform block size connected to MC block size
• No additional side information
• Exploit signal length
• Definition of transforms, motion estimation,
  deblocking filter in VCEG-M62

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CBPY Coding

• Number of encoded CBPY bits is MB mode dependend
  
• Context generation
• Blocks larger than 8x8 treated as combinations
  of 8x8 blocks

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Level Coding

• Binarization and context generation taken form
  TML.
• MB Mode 1-4
• Exploit CBP block size transform block sizeno
  EOB as first symbol
• MB Mode 5-7
• Encoding same as encoding levels in TML 4x4
  blocks

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Run Coding

• New binarization, MB mode dependend
• Unary binarization for the first 3 run symbols
• Fixed length binarization for the remaining
  runsNumber of Bins mode dependend
• 13 run contexts

Contexts for the Run Bins
Run Binarization
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Simulation Results

• Simulation Conditions
• 8th-pel motion resolution
• SATD for motion estimation
• Search range 16
• 5 reference frames
• CABAC encoding
• RD optimization on
• QPI QPP - 2
• QPB QPP 2

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Simulation Results (IPPP...)
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Simulation Results (IPPP...)
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Simulation Results (IPPP...)
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Simulation Results (IPPP...)
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Simulation Results (IPPP...)
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Simulation Results (IPPP...)
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Simulation Results (IPPP...)
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Simulation Results (IBPBPB...)
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Simulation Results (IBPB.. only B-Frames)
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Simulation Results (IBPBPB...)
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Simulation Results (IBPB.. only B-Frames)