From Newsgroup: comp.graphics.apps.gimp


As a casual user of GIMP 2.10, I have occassionally
used Resynthesizer (via Filters -> Map -> Resynthesize)
and usually get slightly hokey results that needed
repeated application as parts of the selected portion
that I wanted to "remove" were actually in the area
in bits and pieces. Often I have to use Clone and
Blur Tools to fix all that.

Recently, I discovered that one can use the
Filters -> Enhance -> Heal Seletion route to
get much better results.

Looking around, I find that there is very little
information on what exactly the two methods
do, and, for that matter, a "manual" for the
Resythesizer tool.There are a lot of videos
demonstrating Resythesizer and related
plugins, but I cannot find a source that explains
the whole Reysnthesizer family of tools.

Could someone point me to such information,
if it exists?

Thanks

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From Newsgroup: comp.graphics.apps.gimp

On Wed, 19 Aug 2026 13:17:39 -0400, Charlie Roberts wrote:

Looking around, I find that there is very little information on what
exactly the two methods do, and, for that matter, a "manual" for the Resythesizer tool.There are a lot of videos demonstrating
Resythesizer and related plugins, but I cannot find a source that
explains the whole Reysnthesizer family of tools.

Looking in the source code of the rCLgimp-plugin-registryrCY package (the
one that provides the Resynthesizer plugin, among others), I found
this URL in the metainfo XML file:
<http://logarithmic.net/pfh/resynthesizer>. ThererCOs even a link to the
PhD thesis on the development of the algorithm.
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From Newsgroup: comp.graphics.apps.gimp

On Wed, 19 Aug 2026 23:22:46 -0000 (UTC), Lawrence D|Oliveiro
<ldo@nz.invalid> wrote:

On Wed, 19 Aug 2026 13:17:39 -0400, Charlie Roberts wrote:

Looking around, I find that there is very little information on what
exactly the two methods do, and, for that matter, a "manual" for the
Resythesizer tool.There are a lot of videos demonstrating
Resythesizer and related plugins, but I cannot find a source that
explains the whole Reysnthesizer family of tools.

Looking in the source code of the ogimp-plugin-registryo package (the
one that provides the Resynthesizer plugin, among others), I found
this URL in the metainfo XML file: ><http://logarithmic.net/pfh/resynthesizer>. ThereAs even a link to the
PhD thesis on the development of the algorithm.

Thanks for the reply, Lawrence.

I came across this page as well, but it has the problem that I
mentioned -- it gives examples (without demonstrating how
to get the results) without any overall description of the
tool.

There are a number videos that demonstrate how to
remove unwanted objects directly using the Resynthesizer
and using the Enhance -> Heal selection route. But, what
I am looking for is a kind of manual that explains how
things are done by the tools in question. But, I have
come across very helpful stuff.

https://templatetoaster.com/tutorials/gimp-resynthesizer-plugin/

is very good at telling what is there, but I would like a bit more
explanation of what is happening behind the tool. The reason
is that results are, many times, far from desired and knowing
the mechanics can help one to use the tool more effectively
and correctly.

This one is also very good

https://patdavid.net/2012/08/getting-around-in-gimp-heal-selection/

He even says:

" What does it do?

The basic premise behind Resynthesizer is that it will sample image
textures from a given area, and will build a new texture from that
data. The texture will be combined from segments of the selection in a
random orientation. The plugin will also clean the feathering between
segments to maintain a relatively consistent contrast, thus minimizing
its visual impact on the result. (This is a very simplistic
explanation of whatAs actually going on under the hood - there are
some neat pixel neighborhood comparisons going on, actually)."

Pat David gets me to 95% of where I want to be!

I have collected lots of other URLs over the years, but, sadly,
many of those pages are now defunct.

Thanks again.











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I should probably add that the reason I am looking for
this is that when I try to remove stuff from an image
using just the Resynthesize plugin direclty, more
often than not I find bits and pieces of what I
want to remove in the region I selected. I do not
understand this behaviour. Hence the need to
clone and blur and and all that.

However, I find the Enhance -> Heal Selection
route is very good in doing the job. I think I
even understand how it does the filling of the
selection as many people explain that.

What the difference is with direclty using
Resynthesize is not clear to me, though I
understand one can explicitly tell it what
texture to use in the area to be filled by
giving it another image as a map. Perhaps
this is what I am missing -- what region
does Resynthesize use as map when it
does the fill. That will explain why I see
bits of what I want to remove still there.

Any explanation would really educate me!

Thanks.
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From Newsgroup: comp.graphics.apps.gimp

On Wed, 19 Aug 2026 23:22:46 -0000 (UTC), Lawrence D|Oliveiro
<ldo@nz.invalid> wrote:

On Wed, 19 Aug 2026 13:17:39 -0400, Charlie Roberts wrote:

Looking around, I find that there is very little information on what
exactly the two methods do, and, for that matter, a "manual" for the
Resythesizer tool.There are a lot of videos demonstrating
Resythesizer and related plugins, but I cannot find a source that
explains the whole Reysnthesizer family of tools.

Looking in the source code of the ogimp-plugin-registryo package (the
one that provides the Resynthesizer plugin, among others), I found
this URL in the metainfo XML file: ><http://logarithmic.net/pfh/resynthesizer>. ThereAs even a link to the
PhD thesis on the development of the algorithm.

I think that I found a page that does (most!) of the trick.

https://github.com/bootchk/resynthesizer/wiki/Quick-user's-guide-to-the-Resynthesizer-plugins-for-GIMP

The section "Map -> Resynthesize..." is very much along the lines
of what I am looking far.

A very long time ago there were nice videos on how to make
seamless textures. Everything done by hand, but not too
hard. Nice to see all that stuff is automated now!

CR
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From Newsgroup: comp.graphics.apps.gimp

On Thu, 20 Aug 2026 11:58:00 -0400, Charlie Roberts wrote:

A very long time ago there were nice videos on how to make seamless
textures. Everything done by hand, but not too hard. Nice to see all
that stuff is automated now!

I found a discussion on the topic, and wrote a GIMP filter to automate
the process, about a decade and a half ago <https://bitbucket.org/ldo17/gimp_filters/src/master/conservative_make_seamless>.

The last version of the code uses my custom interface allowing Python
3 code to be run under GIMP 2; I should update to GIMP 3 at some
point.
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