[Bug] The Normalize action doesn't really normalize

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sd_snatcher
Posts: 26
Joined: Sat Sep 10, 2016 11:29 pm

[Bug] The Normalize action doesn't really normalize

Post by sd_snatcher » Sun Dec 31, 2017 11:29 am

The normalize action is doing something weird with the image, that isn't normalization at all. The contrast gets even worse than it was.

I attached 3 files here to demonstrate the problem:

ALESTE2A_sourcetst.png: Source test image
ALESTE2A_normalizedCorrectly.png: How GIMP normalizes the image
ALESTE2A_normalizeError.png: How XnConvert is normalizing the image

Tested with XnConvert 1.75 on Mac OS-X.
Attachments
ALESTE2A_sourcetst.png
Source test image
ALESTE2A_sourcetst.png (19.93 KiB) Viewed 292 times
ALESTE2A_normalizeError.png
How XnConvert is normalizing the image
ALESTE2A_normalizeError.png (18.96 KiB) Viewed 292 times
ALESTE2A_normalizedCorrectly.png
How GIMP normalizes the image
ALESTE2A_normalizedCorrectly.png (17.8 KiB) Viewed 292 times

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xnview
Author of XnView
Posts: 30213
Joined: Mon Oct 13, 2003 7:31 am
Location: France
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Re: [Bug] The Normalize action doesn't really normalize

Post by xnview » Tue Jan 02, 2018 7:19 am

right, a bug. Log lut & normalize are inverted
Pierre.

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