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Text over light part of background is lighter than rest of text

Mar 28, 2014, 00:15
Post: #1
Text over light part of background is lighter than rest of text
[attachment=3251]I have a background image that is about half brightness for a tri-fold brochure. Text is in layers over it. Most looks very good. Some of the text is over lighter areas of the background, while some is not. That text which is over the lighter background parts is lighter than the other text (on screen and printed), as if some of the background brightness is bleaching the text. What is the fix so that all the text has the same darkness?
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Mar 28, 2014, 08:33 (This post was last modified: Mar 28, 2014 09:37 by iForStyle007.)
Post: #2
RE: Text over light part of background is lighter than rest of text
(Mar 28, 2014 00:15)Infomaster Wrote:  I have a background image that is about half brightness for a tri-fold brochure. Text is in layers over it. Most looks very good. Some of the text is over lighter areas of the background, while some is not. That text which is over the lighter background parts is lighter than the other text (on screen and printed), as if some of the background brightness is bleaching the text. What is the fix so that all the text has the same darkness?

What your seeing is an illusion, the text in the light area appears faded/lighter because the surrounding is lighter.

See: Adelson's Same Color Illusion
http://www.positscience.com/brain-resour...r-illusion

However, there are a few ways to combat this illusion or make it less noticeable.

1. Duplicate the layer
1.5 "Colors > Color to Alpha"
2. Click the color box in the "Color to Alpha" to bring up it's color picker window.
3. Click the eye dropper & click the text/color on the canvas,
(*Or pick a color where only the text shows on the preview window)
- I found white works well with your image
click ok twice

4. Click back on your original layer(the background image)
- go to any of these to bring down the contrast to make the background more uniform:
"colors > brightness contrast" (pull contrast slider to the left)
"colors > levels"
"colors > curves"

Some of the "colors > auto..." features might work too.

*Also try the "Colors > Threshold" instead of "color alpha"


*Image sample coming in a bit...!*
Above method:    

Slightly more complex way:    
1. Copy image twice (you should now have 3 layers)
2. Set top layer mode to "Dodge"
3. Colors > Desaturate; luminosity
4. Merge top layer down one layer (see right side of pic for steps)
-You should now have 2 layers again
5. Top layer, "Colors > Color to Alpha; white"
6. Click bottom layer & turn down the contrast some "Colors > Brightness- Contrast
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Mar 28, 2014, 08:35
Post: #3
RE: Text over light part of background is lighter than rest of text
I can not really replicate that. If the 'background' layer is on top of the text then there is a multiplying effect in dark areas. Under should be ok.

Screenshot http://i.imgur.com/YRUVxPX.jpg

If possible can you post the xcf with layers somewhere, dropbox for example.

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Mar 28, 2014, 17:11
Post: #4
RE: Text over light part of background is lighter than rest of text
(Mar 28, 2014 08:35)rich2005 Wrote:  I can not really replicate that. If the 'background' layer is on top of the text then there is a multiplying effect in dark areas. Under should be ok.

Screenshot http://i.imgur.com/YRUVxPX.jpg

If possible can you post the xcf with layers somewhere, dropbox for example.

rich2005, I uploaded the xcf file to Google Docs. Thanks so much for your help on this.

https://drive.google.com/file/d/0B80R11z...sp=sharing
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Mar 28, 2014, 18:57 (This post was last modified: Mar 28, 2014 19:00 by rich2005.)
Post: #5
RE: Text over light part of background is lighter than rest of text
Yep, move the 'background' to under the text layers.

screenshot http://i.imgur.com/9hmwIUQ.jpg

Layers click-drag in the layers dialog or you can use the up/down arrows at the bottom.

edit: you should not need that layer in hard light mode either

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Mar 28, 2014, 19:22
Post: #6
RE: Text over light part of background is lighter than rest of text
Wow, that was a perfect answer. One step of moving a layer down to the right place. Thank you so much. You have the skill for that! I have learned from you.
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