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Nov 21, 2015, 12:41 AM
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Shadow detection


Just by selecting the right luminance, shadows can be detected. It might even work in variable lighting. It wouldn't be able to fill missing areas of the path, since the shadow borders can't be detected. Its mane use would be throwing out bad frames. The algorithm would be to detect when the edge of the path came within a certain distance of the shadow pixels. If enough shadow pixels were within range, the frame would be discarded. If a shadow crossed the edge, it would be discarded. If the color key was all shaded, it would be discarded.
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