What is the difference between bbox ap and segm ap?

[vansin]

[yancong]

Hi @vansin , the 'bbox' and 'segm' ap in COCODetectionMetric follows the definitions in https://cocodataset.org/#detection-eval

There are two object detection tasks for COCO dataset: using either bounding box output or object segmentation output (the latter is also known as instance segmentation).

The evaluation metrics for detection with bounding boxes and segmentation masks are identical in all respects except for the IoU computation (which is performed over boxes or masks, respectively).