Adjust Conrast/Brighntess VB.NET

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I have searched over the web but i can't find an answer. How can I adjust contrast or brightness if a trackbar's value is changed?

Posted 27-Sep-12 7:49am

AfterShave

Updated 27-Sep-12 7:52am

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Sergey Alexandrovich Kryukov 27-Sep-12 13:54pm

Contrast/brightness of what? OK, as bitmap manipulations are accessible directly through .NET FCL, I'll assume this is the monitor contrast/brightness.
--SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-09-27T07:53:00

Solution 1

Please see this CodeProject article: Setting Screen Brightness in C#[^].

I don't understand how could you miss it if you did the search.

—SA

Posted 27-Sep-12 7:53am

Sergey Alexandrovich Kryukov

Comments

AfterShave 27-Sep-12 14:18pm

I mean to adjust an image's brightness/contrast.

Sergey Alexandrovich Kryukov 27-Sep-12 16:25pm

You should have been more accurate in posing your question. And now, you are still inaccurate, as the answer greatly depends on what you are using. It could be System.Drawing, or WPF, or something else. In all cases, it's taking the whole buffer of image data and looping through all pixels.
--SA