oneflow.nms(boxes, scores, iou_threshold: float)

Performs non-maximum suppression (NMS) on the boxes according to their intersection-over-union (IoU).

NMS iteratively removes lower scoring boxes which have an IoU greater than iou_threshold with another (higher scoring) box.

  • boxes (Tensor[N, 4]) – boxes to perform NMS on. They are expected to be in (x1, y1, x2, y2) format with 0 <= x1 < x2 and 0 <= y1 < y2.

  • scores (Tensor[N]) – scores for each one of the boxes

  • iou_threshold (float) – discards all overlapping boxes with IoU > iou_threshold


int64 tensor with the indices of the elements that have been kept by NMS, sorted in decreasing order of scores

Return type