Gray histogram feature extraction with spatial location information
2018-01-05
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The traditional gray histogram lacks the spatial distribution information of pixels. If the spatial distribution of pixels can be included in the histogram, it will better describe the target. Considering that not all the pixels in the target region have the same contribution to the description of the target gray, but usually the closer the point is to the center of the target, the greater the contribution is. Therefore, we use a weighting function to give a smaller weight value to the pixels far away from the center of the target region.
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