Improved Traffic Sign Detection Algorithm Based on Libra R-CNN
Bibliographic record
Abstract
摘要： 随着人工智能领域的快速发展，深度学习在无人驾驶领域中的应用逐渐成熟，但是其中交通标志检测任务作为难点问题仍有很大的改进空间。城市道路下的交通标志检测具有环境复杂、小目标多、目标种类多且数量不平衡的特点，针对这些问题，提出基于Libra R-CNN进行改进的方案。Libra R-CNN目标检测网络是基于平衡提出的，能够较好应对目标种类多及数量不平衡问题，在Libra R-CNN网络的锚框提取样本阶段，使用GA-RPN生成锚框，从而在训练期间产生更精确、更多样化的样本，减少背景影响和小目标不好定位的问题，提高检测准确率。该方法通过试验验证了有效性。试验是在MS COCO 2017和交通标志数据集上进行的。改进后的Libra R-CNN的mAP提高了超2.7个百分点。试验结果表明，改进后的网络相比原有的目标检测网络性能有了显著提升。
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.003 |
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".