remove stains without losing 'colour' info

[Reddwarf4everOrig]

Scanned at 24 BIT RGB to preserve detail, have performed Auto Tone only, wondered best way to remove the staining, and still preserve the detail, thanks

Also I hope to Colourise the Trees Sky and Grass, while leaving the group in Black & White, wondered the best procedure, would i use one of the selection tools on the 3 areas ? if so which would be best ? cant see it would be simple, although i hope it is, but would like some guidance for this project Thanks

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[hawkeye]

Using the red channel will remove the yellow color.

 

[Reddwarf4everOrig]

Should I do a selection around the satins and do selective RED removal, or the whole image thanks

 

[JeffK]

Why is this saved as a CMYK? That should be your last step when you go to print.
In the original, you've also got staining top and botttom

Took your original TIF in CMYK and changed mode to RGB
Added a black and white adjustment layer and pulled the yellow slider to the right
Resaved as a TIF and discarded layers (if you save with layers, then just merge)
You can clean up any leftover naughty bits with a clone tool
Now you're back to an RGB image that you can colorize

 

[chrisdesign]

I also changed back to RGB like Jeff did.
Then I made a selection of the red channel and copy pasted it into green channel and also into the blue channel.
This procedure resulted in the best image details and it looked black and white with still a bit clouds in the sky.
The rest is done with curves to get a decent looking image. (This is just my interpretation)
Finally I did retouch the many white spots in the image and applied some sharpening.

This low contrast image provides a good start to colorize the image. Feel free to use it, if you like it.

 

[JeffK]

...Then I made a selection of the red channel and copy pasted it into green channel and also into the blue channel.

Chris -
Can you explain your steps? Do you activate the red channel, then Edit-Copy, then roll over on top of the green channel, and Edit-Paste?
Never tried this before myself and not sure if this is the right process....I can't see any changes...
Thanks for any guidance!
- Jeff

 

[Reddwarf4everOrig]

Why is this saved as a CMYK? That should be your last step when you go to print.
In the original, you've also got staining top and botttom

Took your original TIF in CMYK and changed mode to RGB
Added a black and white adjustment layer and pulled the yellow slider to the right
Resaved as a TIF and discarded layers (if you save with layers, then just merge)
You can clean up any leftover naughty bits with a clone tool
Now you're back to an RGB image that you can colorize
View attachment 121174

many thanks, would it also have worked if I had selected the stained areas and fully desaturated, or would this A not have worked, or B resulted in lost detail thanks

 

[Reddwarf4everOrig]

Why is this saved as a CMYK? That should be your last step when you go to print.
In the original, you've also got staining top and botttom

Took your original TIF in CMYK and changed mode to RGB
Added a black and white adjustment layer and pulled the yellow slider to the right
Resaved as a TIF and discarded layers (if you save with layers, then just merge)
You can clean up any leftover naughty bits with a clone tool
Now you're back to an RGB image that you can colorize

View attachment 121174

thanks, would i have lost any detail if I had desat fully the stained areas only ? Not sure if the desat process loses ‘ colour‘ information .
also my other point about colourising the grass, trees and sky and leaving the group in B&W, would I be best selecting the group to a new layer, using an eraser tool maybe to clean up the group, then replacing once the grass and trees are colourised......thanks again

 

[JeffK]

thanks, would i have lost any detail if I had desat fully the stained areas only ? Not sure if the desat process loses ‘ colour‘ information .
also my other point about colourising the grass, trees and sky and leaving the group in B&W, would I be best selecting the group to a new layer, using an eraser tool maybe to clean up the group, then replacing once the grass and trees are colourised......thanks again

Actually if you had just desaturated, you would have ended up with a black and white stain instead of a yellow one:



If I were doing colorization, I'd also look to isolate areas. But I'd rather you use proper masking and stay away from the eraser tool. The eraser is a very destructive process. If you use it, you can't get the information back and would have to start over. But if you mask, you can always go back just by using the brush tool.

I'm also curious why you want to colorize the scene but not the people in the scene. The colorization will draw the eye away from the family. You might want to try a test of colorizing the family and leaving the scene itself in black and white. It's more work but the results might be more visually appealing. This, of course, is up to the artist

Just my thoughts and opinions...which can often be wrong...

- Jeff

 

[Reddwarf4everOrig]

Actually if you had just desaturated, you would have ended up with a black and white stain instead of a yellow one:

View attachment 121181

If I were doing colorization, I'd also look to isolate areas. But I'd rather you use proper masking and stay away from the eraser tool. The eraser is a very destructive process. If you use it, you can't get the information back and would have to start over. But if you mask, you can always go back just by using the brush tool.

I'm also curious why you want to colorize the scene but not the people in the scene. The colorization will draw the eye away from the family. You might want to try a test of colorizing the family and leaving the scene itself in black and white. It's more work but the results might be more visually appealing. This, of course, is up to the artist

Just my thoughts and opinions...which can often be wrong...

- Jeff

the idea of colouring the guests is something I hadn’t considered, but will now, thanks

 

[chrisdesign]

Chris -
Can you explain your steps? Do you activate the red channel, then Edit-Copy, then roll over on top of the green channel, and Edit-Paste?
Never tried this before myself and not sure if this is the right process....I can't see any changes...
Thanks for any guidance!
- Jeff

Jeff
The red channel must be activated. Copy it, then press the green channel and paste it . Then press the blue channel and paste it.
Now you should have 3 identical channels in your image. The RBG result is a black and white image with no content of the green channel and the blue channel.
The changes you see that there are no black blotches (from the yellow parts )anymore. Just a little bit of sky in the top left corner.
I hope this helps.