color reduction reduces brightness of white backgrounds

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corr
Posts: 136
Joined: Tue Jun 13, 2017 8:00 am

color reduction reduces brightness of white backgrounds

Post by corr »

Trying to reduce a scanned document to 64 colors (dithering: none). However, the white background becomes darker. This is an effect that I cannot observe in Photoshop.

How can I preserve the white background in my image?

I can make a level afterwards, but it doesn't seem to me to be the best way to do this after color reduction.
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Re: color reduction reduces brightness of white backgrounds

Post by xnview »

could you post a sample file?
Pierre.
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