NMS Maker

NMS Maker analyzes detector outputs and filters overlapping boxes to improve precision and reduce duplicates in object detection pipelines.

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About This Tool

NMS Maker provides a structured approach to applying non-maximum suppression on detector results. It accepts a list of candidate bounding boxes with confidence scores and class labels, and outputs a pruned set of detections. Conceptually, it sorts detections by score, computes pairwise overlaps via IoU, and removes or downscales less-preferred boxes when overlaps exceed the configured threshold. The tool supports standard NMS and optional soft-NMS, per-class suppression, and batched inputs for large datasets. It does not train models or alter underlying predictions, but it optimizes post-processing to improve precision and reduce duplicate detections. Use cases include evaluating object detectors on COCO- and VOC-style datasets, benchmarking post-processing strategies, and deploying consistent suppression rules across experiments.

How to Use

  1. Provide inputs: supply detections with coordinates, scores, and optional class labels.
  2. Choose method: select standard NMS or soft-NMS and set the IoU threshold.
  3. Run calculation: apply suppression to produce kept detections.
  4. Review outputs: inspect the filtered bounding boxes and their scores.
  5. Optional: export results or tune per-class thresholds for consistency.
How to use nms maker

Frequently Asked Questions

Find Quick Answers

What is NMS Maker used for?
It applies non-maximum suppression to detector outputs to reduce overlapping detections and improve precision. It supports standard and soft-NMS modes and can operate per class to better reflect class-specific localization needs.
What input formats are supported?
Inputs are a list of detections with coordinates (x1,y1,x2,y2), a confidence score, and an optional class label. The tool validates numeric values, bounds, and score ranges, then returns a filtered list of detections with updated scores if Soft-NMS is used.
How should I interpret the outputs?
The output is a pruned set of detections that survived suppression. Each item includes coordinates, score, and class label, suitable for evaluation, visualization, or downstream processing.
What thresholds are typical?
IoU thresholds commonly range from 0.3 to 0.5 in many benchmarks. You can adjust per dataset; higher thresholds preserve more detections but may increase duplicates, while lower thresholds reduce duplicates at the potential cost of missing true positives.

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