Hi,
as gimp was updated from 8 to 16 bit per channel recently (with v2.9):

Is G'mic also working in 16 bit mode in the actual gimp versions
(2.10.6) ?

Chris

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have a look at this page :

https://gmic.eu/download.shtml

a lot of g'mics for a lot of OS

( I would choose a version for 2.10.6 :D )



On Wed, 24 Oct 2018 Christian Steins wrote:

Hi,
as gimp was updated from 8 to 16 bit per channel recently (with v2.9):

Is G'mic also working in 16 bit mode in the actual gimp versions
(2.10.6) ?

Chris

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Hi,
thanks, I did not mean the OS bits (16/32) but the colour resolution.

But in the meantime I've done some tests and I'm sure, G'mic
is running in 16 bit per channel resolution in Gimp 2.10.

Chris


Am 25.10.2018 um 10:27 schrieb lisa:

have a look at this page :

https://gmic.eu/download.shtml

a lot of g'mics for a lot of OS

( I would choose a version for 2.10.6 :D )

On Wed, 24 Oct 2018 Christian Steins wrote:

Hi,
as gimp was updated from 8 to 16 bit per channel recently (with v2.9):

Is G'mic also working in 16 bit mode in the actual gimp versions
(2.10.6) ?

Chris

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In article <pqpe04$n58$[email protected]>,
Christian Steins <[email protected]> wrote:

Hi,
as gimp was updated from 8 to 16 bit per channel recently (with v2.9):

Is G'mic also working in 16 bit mode in the actual gimp versions
(2.10.6) ?

Chris

I check in to this group every so often, and was puzzled by your
reference to "G'Mic", as I had never heard of it.

A check of the web quickly led to me to find it and decide that
I *had* to grab it!

I now have both the command-line and GIMP (2.8) versions on my
Linux box, and am somewhat startled by its capabilities! The web
doesn't seem to have many references except from the authors
themselves. Rather surprising.

Anyway, thanks for mentioning it. I expect it to be very useful!

-- Pete --

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On 10/24/2018 5:28 AM, Christian Steins wrote:

Is G'mic also working in 16 bit mode in the actual gimp versions
(2.10.6) ?

I've done a few experiments with G'Mic on GIMP 2.10.6. It seems that
G'Mic can work in 16-bit precision.

Here's what I did.

1. Start with an 8-bit-per-channel test image. Check the distribution of
pixel values using Colors->Curves... (My test image has smooth and
continuous distributions in all three of the RGB channels.)

2. Convert the image to a 16-bit image, using Image->Precision->16-bit
integer. Check the distribution of pixel values again. Resize the
"Adjust Color Curves" dialog to make it larger. You can now see gaps in
the distribution of pixel values. (In each color channel, the 256
possible original pixel values won't populate the 0-65535 range evenly.)

3. Apply a filter in G'Mic.

4. Check the distribution of pixel values again. The distributions are
now smooth and continuous, again.

If the G'Mic filter in step 3 can only do 8-bit arithmetic, you'd expect
to see gaps in the resulting distributions of pixel values (but you don't).

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