Thursday, June 10, 2010

Not much difference between previous smoothing and bilateral smoothing

There is very little change in very small regions. As for the reason, I guess it is because the LIC integrates the difference.

Previous smoothing considering only gradient magnitude difference

Bilateral smoothing considering both position and gradient magnitude difference
(sigmad=12, sigmar=6)
Posted by HullSmurf at 9:54 AM

2 comments:

  1. DaveJune 10, 2010 at 4:31 PM

    Probably need to do a difference image to see any change.

    What is the filter radius? This technique should use a fairly large filter, at least 7x7 and probably 11x11 or bigger. Those sigmas look to me to be too high (is the filter doing much of anything)?

    Iterated filtering is also worth considering (can get a bigger range without taking forever to run the filter).

    ReplyDelete
  2. HullSmurfJune 11, 2010 at 9:49 AM

    9by9 filter, two iterations.

    ReplyDelete

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