Kontrast einer JPG verändern

26/09/2007 - 11:29 von werner meyer | Report spam
Hallo,
ich war der Meinung dass ich den Kontrast einer JPG über GDI veràndern kann.
Ist das richtig?
und wenn ja gibt es da ein Beispiel?
 

Lesen sie die antworten

#1 Cesar
10/10/2007 - 05:25 | Warnen spam
Hi Werner,

Sorry for answering in English in this space.
I'm just writing here because I see that your question was not answered.

Yes, you can control contrast, and many other color effects using GdiPlus.
The best way is to use the gdiplusX library.

I've added a sample that controls contrast, brightness, saturation, color
channels, hue and some other things.
Run the file DEMO.PRG, and select the sample "CölorMatrices Advanced"

This is really easy.
If you need any help on this, feel free to call me again. If you prefer to
continue this thread here in the german forum, feel free to do it.

I also wrote some articles that deal with this subject, that you may want to
check:

UTMAG, using GdiPlusX (THE MOST RECOMMENDED)
Special Effects on Images with GDI+
http://www.utmag.com/ViewPageArticl...514E673D3D

http://www.utmag.com/ViewPageArticl...7761773D3D


Blog Posts (using a subclass of _gdiplus.vcx)

http://weblogs.foxite.com/cesarchal.../1139.aspx
Hope this helps

Cesar


"werner meyer" wrote in message
news:eLw1Q$
Hallo,
ich war der Meinung dass ich den Kontrast einer JPG über GDI veràndern
kann.
Ist das richtig?
und wenn ja gibt es da ein Beispiel?

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