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Record W2104495777 · doi:10.1109/newcas.2005.1496683

A High Performance CABAC Encoder

2005· article· en· W2104495777 on OpenAlexaff
Hassan Shojania, Subramania I. Sudharsanan

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicVideo Coding and Compression Technologies
Canadian institutionsQueen's University
Fundersnot available
KeywordsContext-adaptive binary arithmetic codingContext-adaptive variable-length codingComputer scienceEntropy encodingEncoderHuffman codingArithmetic codingReduced instruction set computingParallel computingEncoding (memory)Adaptive codingApplication-specific integrated circuitCoding (social sciences)Computer hardwareArithmeticAlgorithmData compressionInstruction setLossless compressionMathematicsArtificial intelligence

Abstract

fetched live from OpenAlex

One key technique for improving the coding efficiency of H.264 video standard is the entropy coder, context-adaptive binary arithmetic coder (CABAC). However the complexity of the encoding process of CABAC is far higher than the table driven entropy encoding schemes such as the Huffman coding. CABAC is also bit serial and its multi-bit parallelization is extremely difficult. For a high definition video encoder, multi-giga hertz RISC processors will be needed to implement the CABAC encoder. In this paper, the authors provided efficient solutions for the arithmetic coder and the renormalizer. An FPGA implementation of the proposed scheme capable of 54 Mbps encoding rate and test results are presented. A 0.18 /spl mu/m ASIC synthesis and simulation shows 87 Mbps encoding rate utilizing an area of 0.42 mm/sup 2/.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.010
Threshold uncertainty score0.032

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0010.000
Scholarly communication0.0010.000
Open science0.0010.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0100.004

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.014
GPT teacher head0.219
Teacher spread0.205 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreMethods

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations38
Published2005
Admission routes1
Has abstractyes

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