Region-based fractal coding of stereo video sequences with quadtree-based disparity compensation
Bibliographic record
Abstract
In order to realize the efficient and economical transmission/storage of stereo video sequences and also the region-based functionality of MPEG-4, we propose a new stereo video sequence compression scheme which uses fractal coding and encodes each region independently by a prior image segmentation map (alpha plane) which is exactly the same as in MPEG-4. We encode the first n frames of the right video sequence as a "set" using the circular prediction mapping (CPM) method and encoding the remaining frames using the non contractive interframe mapping (NCIM) method. The CPM and NCIM methods accomplish the motion estimation/compensation which can exploit the high temporal correlations between adjacent frames of the right sequence; at the same time, we exploit the spatial correlations between the left and right frames by searching for similar blocks using quadtree-based disparity estimation/compensation. The experimental results indicate that we get a high compression ratio and also good PSNR.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot 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.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".