Attention-based mechanism for SuperPoint feature point extraction in endoscopy
Bibliographic record
Abstract
Routine endoscopes have been widely used in medical diagnosis. Three-dimensional (3D) modelling reconstruction of endoscopic images has become the development direction of future medical domain. Local feature extraction and matching is a key step for 3D modelling reconstruction. Handcrafted local features such as SIFT, SURF, ORB, are still a predominant tool for such tasks. Due to the special environment of endoscopes, there are generally weak textures and large lighting changes, which make traditional feature point extraction algorithms unable to extract feature points well. We explore the potential of the self-supervised method SuperPoint. Many existing works have shown the benefits of enhancing spatial encoding. We propose a new architecture unit, in which the SE attention mechanism module is proposed, which can explicitly model the interdependence between convolutional feature channels to improve the network's representation ability. The experimental results show that this multi-scale channel attention feature point extraction algorithm based on SuperPoint has better result and achieves higher matching quality than handcrafted local features and original algorithm in endoscopic images.
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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 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".