Relax bounding box check assertion for FP16

Reviewed By: stephenyan1231

Differential Revision: D30827134

fbshipit-source-id: e0fcb3b5f62d52283c08870dc9062c2086faf163

projects_oss/detr/detr/util/box_ops.py

@@ -48,7 +48,7 @@ def generalized_box_iou(boxes1, boxes2):
     """
     # degenerate boxes gives inf / nan results
     # so do an early check
-    assert (boxes1[:, 2:] > boxes1[:, :2]).all(), f"incorrect boxes, boxes1 {boxes1}"
+    assert (boxes1[:, 2:] >= boxes1[:, :2]).all(), f"incorrect boxes, boxes1 {boxes1}"
     assert (boxes2[:, 2:] > boxes2[:, :2]).all(), f"incorrect boxes, boxes2 {boxes2}"
     iou, union = box_iou(boxes1, boxes2)