lebeg commented on a change in pull request #11033: Add frame-resize option to
ssd demo to scale camera input
URL: https://github.com/apache/incubator-mxnet/pull/11033#discussion_r190499813
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File path: example/ssd/dataset/cv2Iterator.py
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@@ -26,10 +26,18 @@ class CameraIterator():
"""
def __init__(self, capture=cv2.VideoCapture(0), frame_resize=None):
self._capture = capture
- self._frame_resize = frame_resize
if frame_resize:
- assert isinstance(frame_resize, tuple) and (len(tuple) == 2),
"frame_resize should be a tuple of (x,y)"
- self._frame_shape = (1, 3, frame_resize[0], frame_resize[1])
+ if isinstance(frame_resize, (tuple, list)) and (len(frame_resize)
== 2):
+ self._frame_resize = tuple(map(int, frame_resize))
+ self._frame_shape = (1, 3, self._frame_resize[0],
self._frame_resize[1])
+ elif isinstance(frame_resize, float):
+ width =
int(self._capture.get(cv2.CAP_PROP_FRAME_WIDTH)*frame_resize)
+ height =
int(self._capture.get(cv2.CAP_PROP_FRAME_HEIGHT)*frame_resize)
+ self._frame_shape = (1, 3, width, height)
+ self._frame_resize = (width, height)
+ else:
+ assert False, "frame_resize should be a tuple of (x,y) pixels "
+ "or an float setting the scaling factor"
Review comment:
a float, not an float
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