In the base config of MM Grounding DINO, the train_pipeline has a RandomCrop with its allow_negative_crop set to True. Namely, the pipeline can produce an image with no bounding boxes on it.
My question is: why is it there? The BaseDataset.__getitem__ already use a refetch in case the transform return None. I do not see the point to use compute time on frame with no annotations.
Anyone can help me to understand this settings please?
Hello,
In the base config of MM Grounding DINO, the
train_pipelinehas aRandomCropwith itsallow_negative_cropset toTrue. Namely, the pipeline can produce an image with no bounding boxes on it.My question is: why is it there? The
BaseDataset.__getitem__already use a refetch in case the transform returnNone. I do not see the point to use compute time on frame with no annotations. Anyone can help me to understand this settings please?Have a nice day, Mathias