Clip horizontal bounding boxes during rotated detection for backward compatibility #9403
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…compatibility (pytorch#9403) Summary: Pull Request resolved: pytorch#9403 In BBoxTransform and GenerateProposal ops, clip_boxes makes sure the bbox fits within the images. For rotated boxes, this doesn't always make sense as there could be multiple ways to clip a rotated box within an image boundary. Moreover, clipping to a horizontal box means we leave out pixels of interest potentially. Therefore, we clip only boxes with angle almost equal to 0 (with a specified `angle_thresh` tolerance). Differential Revision: D8828588 fbshipit-source-id: b671f2314e7a1252e2e8669cdc06f83c74696eea
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goldsborough
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Jul 20, 2018
…compatibility (pytorch#9403) Summary: Pull Request resolved: pytorch#9403 In BBoxTransform and GenerateProposal ops, clip_boxes makes sure the bbox fits within the images. For rotated boxes, this doesn't always make sense as there could be multiple ways to clip a rotated box within an image boundary. Moreover, clipping to a horizontal box means we leave out pixels of interest potentially. Therefore, we clip only boxes with angle almost equal to 0 (with a specified `angle_thresh` tolerance). Reviewed By: pjh5 Differential Revision: D8828588 fbshipit-source-id: 39c1eafdb5d39d383780faa0a47e76149145e50c
jramseyer
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Jul 30, 2018
…compatibility (pytorch#9403) Summary: Pull Request resolved: pytorch#9403 In BBoxTransform and GenerateProposal ops, clip_boxes makes sure the bbox fits within the images. For rotated boxes, this doesn't always make sense as there could be multiple ways to clip a rotated box within an image boundary. Moreover, clipping to a horizontal box means we leave out pixels of interest potentially. Therefore, we clip only boxes with angle almost equal to 0 (with a specified `angle_thresh` tolerance). Reviewed By: pjh5 Differential Revision: D8828588 fbshipit-source-id: 39c1eafdb5d39d383780faa0a47e76149145e50c
goodlux
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Aug 15, 2018
…compatibility (pytorch#9403) Summary: Pull Request resolved: pytorch#9403 In BBoxTransform and GenerateProposal ops, clip_boxes makes sure the bbox fits within the images. For rotated boxes, this doesn't always make sense as there could be multiple ways to clip a rotated box within an image boundary. Moreover, clipping to a horizontal box means we leave out pixels of interest potentially. Therefore, we clip only boxes with angle almost equal to 0 (with a specified `angle_thresh` tolerance). Reviewed By: pjh5 Differential Revision: D8828588 fbshipit-source-id: 39c1eafdb5d39d383780faa0a47e76149145e50c
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Summary:
In BBoxTransform and GenerateProposal ops, clip_boxes makes sure the bbox fits
within the images. For rotated boxes, this doesn't always make sense as there
could be multiple ways to clip a rotated box within an image boundary.
Moreover, clipping to a horizontal box means we leave out pixels of interest
potentially. Therefore, we clip only boxes with angle almost equal to 0 (with a
specified
angle_threshtolerance).Differential Revision: D8828588