Distributed Optimization of Visual Sensor Networks for Coverage of a Large-Scale 3-D Scene
Bibliographic record
Abstract
Visual coverage is an important task for environment perception. In this article, the coverage of a large-scale 3-D scene represented by a polygon mesh model is considered, and a visual sensor network deployment algorithm is proposed through the combination of space partition, greedy and local search procedures. Comparing with existing approaches, the proposed algorithm can handle large-scale 3-D polygon meshes much faster in a scalable and distributed way, with superior coverage performance. First, we propose a new data structure called “chunk-triangle” in order to accelerate the computing process to identify visible triangles for a given camera. Furthermore, a GPU-based parallel algorithm is presented to shorten the time consumed for occlusion detection. Second, a new fast, scalable and distributed deployment approach is proposed for a camera sensor network to cover large-scale 3-D polygon meshes. The deployment algorithm generates a solution space of individual candidate cameras followed by camera selection. In camera selection, we partition the target scene space into some regions and conduct greedy search, respectively, in each region in order to choose a preliminary set of cameras with high initial coverage quality. Then, a local search strategy is further conducted to improve the coverage performance by compensating for the lost in rough space partition, and thus, results in an optimal deployment configuration of the camera network. Comparative evaluation results demonstrate the advantages of the proposed approach versus existing methods in terms of time cost, scalability, and coverage performance.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.001 |
| 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".