Energy-Adaptive Bitstream-Layer Model for Perceptual Quality Assessment of V-PCC Encoded 3D Point Clouds
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The scope of point cloud (PC) applications is expanding. We propose a no-reference bitstream-layer quality assessment model that eliminates the need for full decoding of the PC, providing quality evaluation scores during the V-PCC decoding process. Specifically, we illustrate the relationship between content diversity (CD) and perceptual coding distortion in lossless geometric coding. Subsequently, we model attribute distortion by predicting CD using transform energy (TE) and texture quantization parameter (TQP). By combining the geometric distortion model with geometry quantization parameters (GQP) and the attribute distortion model, we derive comprehensive quality prediction results. Our experimental results on four PC databases (WPC2.0, M-PCCD, VSENSE VVDB and VSENSE VVDB2) show that the proposed energy-adaptive bitstream-layer model (EABL) delivers competitive quality prediction performance in comparison with existing full-reference, reduced-reference and no-reference PC quality assessment models that require full decoding, and meanwhile exhibits large speed advantage. The source code will be made publicly available for repeatability research at https://github.com/arthas-sws/EABL_model.
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.
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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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