RDO cost modeling for low-complexity HEVC intra coding
Why this work is in the frame
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Bibliographic record
Abstract
High efficiency video coding (HEVC) is the newest international standard for video compression, providing improved coding performance that achieves compression ratios up to 50% higher than those obtained with H.264/AVC. However, this improvement comes at the expense of high computational complexity and coding time. In this paper, we propose a novel method for fast and low-complexity intra HEVC mode decision based on rate-distortion optimization (RDO) cost modeling, which permits the exclusion of non-promising candidates from the RDO processing. To achieve even more complexity reduction, an additional rough most probable modes examination is coupled with the main algorithm. Experimental results show that the proposed algorithms reduce the encoding time by 41.8% on average, with a negligible quality loss of 0.058 dB (BD-PSNR) for all-intra scenarios, as compared to the HEVC reference implementation, the HM 15.0.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it