- Find the modal value of the center pixel and it's surrounding window
- If the difference between the center pixel and the modal value is larger than some pre-defined threshold, replace it.
what is the histogram filter?
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Hello
I'm trying to image proccessing the image of lidar system.
for this purpose, I'm using combination filter which one of them is histogram filter but I can't understand the algorithms clearly?
can any one explain me the step of this method ???
thanks.
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Rik
2021-9-22
This is how I understand it:
First choose a window size and a threshold. Then do these steps for every pixel:
This is similar to using a convolution to find outliers, but instead of the mean, you want the mode.
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