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added check for valid bounding boxes, #133 #134

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b6d4d2e
added check for valid bounding boxes, #133
cells2numbers Dec 4, 2017
b689d01
cleanup
cells2numbers Dec 4, 2017
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7 changes: 7 additions & 0 deletions keras_rcnn/preprocessing/_object_detection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,13 @@ def next(self):
label[self.classes[b["class"]]] = 1
labels = numpy.append(labels, [[label]], axis=1)

# check of all boxes are valid, i.e. x1 < x2 and y1 < y2
for i, b in enumerate(self.dictionary[image_index]["boxes"]):
if ( b["x1"] >= b["x2"] ) or ( b["x1"] >= b["x2"] ):
raise Exception(
"invalid bounding boxes (x1 > x2 or y1 > y2"
)

# Scale the ground truth boxes to the selected image scale.
boxes[batch_index, :, :4] *= self.scale

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