Investigate merging box conversion utils from ops and transforms #9387
Description
Currently, we have similar box conversion functionality implemented in two places:
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torchvision/ops/_box_convert.py -
torchvision/transforms/v2/functional/_meta.py
This duplication is not ideal and could lead to inconsistencies (e.g., different rounding behavior for integer tensors).
Suggested investigation:
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Compare the two implementations for correctness and consistency
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Run benchmarks to evaluate which implementation is more efficient
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Merge them into one.
Considerations:
The transforms version supports inplace operations, while the ops version does not.
Any changes should maintain backward compatibility
Related: PR #9322 (Fix CXCYWH to XYXY conversion for integer bounding boxes)