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Correction to IOU calcuation #195

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Correction to IOU calcuation #195

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7 changes: 2 additions & 5 deletions src/grits.py
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Original file line number Diff line number Diff line change
Expand Up @@ -227,12 +227,9 @@ def iou(bbox1, bbox2):
Compute the intersection-over-union of two bounding boxes.
"""
intersection = Rect(bbox1).intersect(bbox2)
union = Rect(bbox1).include_rect(bbox2)

union_area = union.get_area()
union_area = Rect(bbox1).get_area() + Rect(bbox2).get_area() - intersection.get_area()
if union_area > 0:
return intersection.get_area() / union.get_area()

return intersection.get_area() / union_area
return 0


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16 changes: 2 additions & 14 deletions src/postprocess.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,8 @@

from fitz import Rect

from grits import iou


def apply_threshold(objects, threshold):
"""
Expand All @@ -31,20 +33,6 @@ def apply_class_thresholds(bboxes, labels, scores, class_names, class_thresholds
return bboxes, scores, labels


def iou(bbox1, bbox2):
"""
Compute the intersection-over-union of two bounding boxes.
"""
intersection = Rect(bbox1).intersect(bbox2)
union = Rect(bbox1).include_rect(bbox2)

union_area = union.get_area()
if union_area > 0:
return intersection.get_area() / union.get_area()

return 0


def iob(bbox1, bbox2):
"""
Compute the intersection area over box area, for bbox1.
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