Here are the advantages of SpotRemover's smoothing routine over the built-in VirtualDub's filter Temporal smoother.
1. The smoothing is made as
the weighed average.
That means, for a current pixel in time, its intensity is
compared to the intensities of all the other
pixels in the smoothing kernel. The smaller is the difference
the more weight is assigned to the corresponding pixel.
The weight does not depend on the pixel's position in the kernel. | |
I should acknowledge that, up to this point, the original
idea was borrowed from the temporal smoother filter of Avery Lee.
And I am grateful to him for the best program for processing video,
the VirtualDub. | |
2. The smoothing strength (that is the effective width on intensity scale for the weights assignment) can be changed in finer steps than in the original temporal smooother, which allows the precise control over the noise reduction while keeping the motion intact.
3. The smoothing kernel can
be changed from 5 to 15 frames. 4. The intensity and color components of a pixel are smoothed separately, with different smoothing strengths. This can be particularly useful for a VHS video. |
See also Features summary