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  Changing resolution (DPI)
Posted by: carmen - 11-14-2018, 03:43 PM - Forum: General questions - Replies (8)

Hello!
My question: is there some way/plugin to change the resolution (dpi) of an existing XCF image?
My reason: 
1. I never print, but export to .jpg or .png for inclusion on ePub books (XHTML)
2. Conflicting resolutions complicate importing layers/paths from other files
3. Through different oversights on my part (failure to delete in Irfanview the original resolution of an image before opening it in Gimp, difference between Gimp versions, not setting the default resolution in preferences...) my XCF images now range from 72 dpi to ~1200 dpi
3. I  would wish I to set it for all at 96 dpi, but haven't found a way to do this.
Help highly appreciated!
Thanks.

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  using free select tool
Posted by: shepherd1969 - 11-14-2018, 03:37 PM - Forum: Gimp 2.10 - Replies (2)

I'm having issues with this tool that I didn't have before the upgrade. I add a picture - Add Alpha Channel - select free tool - outline. I get the ants after double clicking but the highlighted image is not being removed. Any help?

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  Choosing out of gamut colors in 32 bit float for HDR
Posted by: mholder - 11-14-2018, 01:00 PM - Forum: Gimp 2.10 - No Replies

I am trying to make an hdr texture for lighting.  Technically, I can make this in Gimp, but for my sun I need an extremely high luminance value.

In the color picker, the largest value I can input is 500 in HSV, which translates (I guess) to 300 Luminance in LCH.

That's a problem because the shadows are too soft.  I need to go much higher than that.  Is there any way to do this?  The only workaround solution is to add lots and lots of exposure to get a pixel value above 500.

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  Shooting With Film
Posted by: Peter B - 11-14-2018, 12:30 PM - Forum: General questions - Replies (1)

I'm an analog person trying to function in the digital age and as a result I do all of my shooting with B&W or color film.  Will I loose any of the features of GIMP using film and will I be able to manipulate B&W images with GIMP?

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  Can't cut or copy selected area
Posted by: T-buch - 11-14-2018, 08:34 AM - Forum: Gimp 2.10 - Replies (4)

I have update to 2.10
I am using Free select tool
Before (the last 6 - 8 year) i could use the Free select tool to make a selection and either copy, cut it etc - Now i am just copying or cutting the whole layer - What do I oversee?

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  Paths tool/Move tool not working. 2.10.8
Posted by: Rohugh - 11-12-2018, 08:49 PM - Forum: Gimp 2.10 - Replies (7)

The move tool stopped working for me,  I clicked it and when I moved my mouse to the work area it would only show the Paths tool,  which worked fine.  Clicking the Paths tool also worked,  I just didn't have the move tool.
I played around trying clicking with combinations of Ctrl/Alt/Shift and got the Move tool working but the Paths tool now refuses to work.  All other tools work fine.

Tried reloading 2.10.8,  tried going back to 2.10.6 all with no success.  I can live without the Paths tool as there are other (kind of) alternatives, but the Move tool is essential.

Any thoughts, ideas, suggestions?

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  Gimp 2.10
Posted by: b60 - 11-12-2018, 05:09 PM - Forum: General questions - Replies (1)

Is it possible to download the latest update (Windows 8.1) keeping the 2.8 version on my computer?

Thanks.

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Lightbulb Gimp Python-fu 2.7 to launch Python 3 for editing images
Posted by: audovoice - 11-12-2018, 09:03 AM - Forum: Extending the GIMP - Replies (7)

On windows 10 you can open up python-fu console in gimp and launch a python 3 terminal.

Code:
from subprocess import call
call(["C:/Users/audov/AppData/Local/Programs/Python/Python36/python.exe"])
If you have python 3.6 that will launch it and when you close that console it gets an exit code back. If you close python 3 by typing exit() the exit code is 0. If you just close the terminal you get -1073741510.

But if I try to pass in additional arguments about what python file to run then I get problems. For example if I run this.
Code:
from subprocess import call
call(["C:/Users/audov/AppData/Local/Programs/Python/Python36/python.exe", "D:/Projects/neural-style-master/neural_style.py"])
I get an exit code of 1 and the terminal opens but immediately closes.

If I were to run the same thing by running python 2.7 and then run this.
Code:
from subprocess import call
call(["C:/Users/audov/AppData/Local/Programs/Python/Python36/python.exe", "D:/Projects/neural-style-master/neural_style.py"])
Then from python 2.7 it launches the specified script using python 3.6. By then typing exit() I end up back in python 2.7.
----------------------------------------------------------------
But Why
----------------------------------------------------------------
The reason I want to do all this is so that I can write a plugin that sends a specified image or set of images to a command line program written for python 3.6. I would then either directly pass back the modified images or save them to a temp file, and then pass back the path.

The reason I need it to be python 3 is because of the use of Tensorflow and similar deep learning image processing libraries. Tensorflow both has useful projects written for it and approaches being easy to install on Windows, Mac, and Linux but it needs python 3.6.

The reason Tensorflow would be useful is there are projects like these Github projects.
https://github.com/anishathalye/neural-style
takes about 5 minutes to process an image with a gpu.

https://github.com/Eyyub/tensorflow-pix2pix
takes about 20 seconds to initialize and then about 2 seconds to process each image.

https://github.com/lengstrom/fast-style-transfer
takes 2 seconds to under a second to process an image.

All of which can make a wide range of innovative changes to images.
Integrating them into a program like gimp would greatly aid their integration into a broader creative process. As it stands now using something like neural-style requires a command line argument like...

D:/Projects/neural-style-master/neural_style.py --network D:/Projects/neural-style-master/imagenet-vgg-verydeep-19.mat  --checkpoint-output "D:/Projects/neural-style-master/temp/temp.png" --iterations 600 --style-scales 1.0 --content-weight-blend 1.0 --content-weight 5.0 --style-weight 500.0 --tv-weight 100.0 --pooling avg --width 512 --content "D:/tile/nature256/nature_00312.png" --styles "D:/tile/nature256/nature_01111.png" --output "D:/tile/temp/nature_00312.png_nature_01111.png.png"

There are efforts to integrate projects like these into a gui but it would be far preferable to make it into a plugin for something like gimp.
---------------------------------------
If what I am trying to do is not possible I am open to trying to do it another way.

The most extreme solution I can think of would be adding a python 3 version of python-fu.
I read somewhere that it was very important to keep python-fu as 2.7 because of plugin comparability. That seems very reasonable.
The same poster however said that there was nothing to stop adding python-fu 3 as a separate plugin. According to them the only reason it was not done already was because there was no great interest from the community to work on adding that feature.

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  Isometric Maze and Gmic preview
Posted by: mholder - 11-12-2018, 02:56 AM - Forum: Gallery - Replies (18)

Gimp 2.10 is an excellent compositor for dealing with linear light.  If I have a high bit depth linear light format, like openexr, then it works great, in my opinion.  There is no endless tweaking of little sections just to get the lighting correct, just a few adjustments of sliders and everything seems to lighten up (or darken) as expected!  I am very pleased with the process.
   
However, I thought I would try a Gmic filter, and the preview shows a raw linear preview:
   
It is supposed to look more like this:
   
Of course this are jpeg exports, but still, I am quite pleased with the results and wanted to share them!

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Photo I see everyone doing it so..no shame. Some photo manip?
Posted by: iZeus - 11-11-2018, 03:58 PM - Forum: Gallery - Replies (3)

The pics are quite large so..... album link
Album of sad mediocre art

Here's link to actual post
Sad Post

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