How to restore old yellowed photo

[denzjos]

Found this one : https://github.com/stongey/PhotoRestore/...%20Plugins
Can't find the plugin in gimp after put it in the plugins folder. Does anyone know how to use this plugin?

[Krikor]

(09-30-2023, 10:32 AM)denzjos Wrote: Found this one : https://github.com/stongey/PhotoRestore/...%20Plugins
Can't find the plugin in gimp after put it in the plugins folder. Does anyone know how to use this plugin?

Did you read the Readme?

"The instructions for running the program are:

Make a new working folder anywhere on your computer.

Copy (not move) into it some of the faded pictures you want to restore.

In the working folder, make a subfolder named ’restored’ (without the ’ ’ quotes) to contain the results.

Download the file restore4.0A.exe from GitHub.

Copy it into the working directory.

Double click on the program restore4.0A.exe.

Put the kettle on - the calculation is very slow but the results should appear in the ’restored’ directory."

[Stephen Liu]

[attachment=10411 Wrote:Krikor pid='36184' dateline='1696061928'][attachment=10411]I took a look at:
https://youtu.be/ylIyA6wQGcY?si=IImHxA4w4hBsMPD2 (video), whose tutorial can be found at https://www.alexburkephoto.com/blog/2019...r-negative -film

Also in this other video
https://youtu.be/LXuwnt5ba8M?si=5KMVN9-Bl3byqOhT

But in these techniques (PS) there is a feature that I didn't understand well: when applying curves you use ALT+click, which doesn't work in Gimp.

So the best results I obtained were those that follow the approach mentioned by denzjos.
In the image below I used this approach followed by the use of G'MIC - Color Presets - PIXLS.US(31) - Whiter Whites (default)

Thanks.

The best I can do on another photo
steps:
Filters -> Enhance - Sharpen Unsharp Mask.
Colors -> Exposure 
Finally Colors -> Hue-Saturation

[Krikor]

Not an improvement...
Pretty much the same steps used before.

   

[Stephen Liu]

(09-30-2023, 10:32 AM)denzjos Wrote: Found this one : https://github.com/stongey/PhotoRestore/...%20Plugins
Can't find the plugin in gimp after put it in the plugins folder. Does anyone know how to use this plugin?

I found the instruction.

How to Install GIMP Plugins
https://thegimptutorials.com/how-to-inst...omatically!

It is simple and straight forwards.  I'll test it later.

There are sever plugins on

GIMP plugins
https://github.com/stongey/PhotoRestore/...%20Plugins

Which one shall I use"

[denzjos]

(09-30-2023, 10:57 AM)Krikor Wrote:

(09-30-2023, 10:32 AM)denzjos Wrote: Found this one : https://github.com/stongey/PhotoRestore/...%20Plugins
Can't find the plugin in gimp after put it in the plugins folder. Does anyone know how to use this plugin?

Did you read the Readme?

"The instructions for running the program are:

Make a new working folder anywhere on your computer.

Copy (not move) into it some of the faded pictures you want to restore.

In the working folder, make a subfolder named ’restored’ (without the ’ ’ quotes) to contain the results.

Download the file restore4.0A.exe from GitHub.

Copy it into the working directory.

Double click on the program restore4.0A.exe.

Put the kettle on - the calculation is very slow but the results should appear in the ’restored’ directory."

Krikor, thank you for the information. 'Very slow', when a few clicks in the levels do the job, a choice is quickly made.

[denzjos]

Another try to recolor and sharpen :
G'Mic-Qt / Colors /Color Balance
G'Mic-Qt / Colors / Vibrance
Colours / Auto / White Balance
G'Mic-Qt / Details / Sharpen [Inverse Diffusion] 
Use 'Colours / Colour Temperature' to optimize the color to taste