A bit unrelated to your work, but now that you are at it, could you add an
arrow pointing from the origin to the healed area? Sometimes I don't know
in which direction I have to apply the correction
El 01/05/2013 12:05, "Pascal Obry" <[email protected]> escribió:
>
> I have just pushed an experimental branch (ex/spot-content-aware) on
> GitHub for testing/review purpose.
>
> As the branch name implies this is a content-aware based spot removal.
> The problem with the current clone tool is that in many cases the area
> (circle) is quite visible as we do a full pixel clone of the zone.
>
> The algorithm is:
>
> 1. Compute the mean of pixel distance from (CMJN : 0,0,0,0)
> That is : p = {c,m,j,n}
> d = sqrt(c^2 + m^2 + j^2 + n^2)
>
> 2. For all pixels distance above a threshold set mask to 1.0
> (full clone).
>
> 3. Growth a bit the mask to avoid border issues
>
> 4. Smooth the mask border to have a seamless blending
>
> On the UI there is no much changed.
>
> 1. Add a spot removal circle on a zone, by default it is behaving as
> the current tool.
>
> 2. When over the circle use shift-<mouse wheel> to select a strength to
> the content aware algorithm.
>
> 3. A red dot on the inner circle is a feedback about the current value.
>
> 4. The strength goes from 0 to 1. 0 is middle-top (Pi/2 angle if you
> prefer).
>
> See attached 4 pictures of one of a somewhat difficult area to heal as
> the colors are quite closer.
>
> spot-area : the area to heal
> spot-current-clone : the result with current clone
> clone-content-aware-tool : the tool UI with the red dot (strength)
> clone-content-aware-result : the clone area with a strength of
> approximatively 0.9.
>
> I have tested this on different images and it is possible to really
> avoid to see the circle of the spot and still have the zone cleaned
> properly.
>
> Please review, comment.
>
> Pascal.
>
> --
> Pascal Obry / Magny Les Hameaux (78)
>
> The best way to travel is by means of imagination
>
> http://v2p.fr.eu.org
> http://www.obry.net
>
> gpg --keyserver keys.gnupg.net --recv-key F949BD3B
>
>
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