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BrightnessCorrection and ContrastCorrection filters for grayscale images #141

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?

What version of the product are you using?
2.1.3

Please provide any additional information below.
Hello,
I need to filters ContrastCorrection and BrightnessCorrection accepts also 8bpp 
Grayscale images. 

Thank you in advance,
Regards, Petr Rotter

Original issue reported on code.google.com by RotterP...@gmail.com on 28 Jul 2010 at 12:00

GoogleCodeExporter commented 8 years ago 
Mentioned filters work in HSL color space, so only color images can be used for 
input.

You may try using LevelsLiner filter to adjust brightness or contrast.

Original comment by andrew.k...@gmail.com on 28 Jul 2010 at 12:06