How to do "Color balance of image"(like photoshop) in C# dynamically..

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3.75/5 (4 votes)

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Hi All,

I need to change Colors in an image but like "color balance" in photoshop

I used this code:

C#

Bitmap bmp = new Bitmap(this.BackgroundImage);
for (int x = 0; x < bmp.Width; x++)
{
    for (int y = 0; y < bmp.Height; y++)
    {
          bmp.SetPixel(x, y, Color.Black);
        
    }
}

this.BackgroundImage = bmp;

but the whole colors in my image changed to black...

How can I solve this color balance problem...

Please help.

Thanks in Advance.

Posted 13-Jun-11 19:18pm

version_2.0

Updated 1-May-17 16:36pm

Ramalinga Koushik

v2

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Comments

Sergey Alexandrovich Kryukov 14-Jun-11 1:51am

There are many different operations for re-touching color balance producing different results based on different data. Which one do you need? All of them?
--SA

version_2.0 14-Jun-11 2:05am

Please help, I am totally blank about it..

Give me tutorial link for that...

2 solutions

Solution 6

I tried answering twice. Even though my answer provided a direct solution to the problem as stated by the OP, it was deleted--twice--marked as not an answer without explanation. So to anyone looking for an actual answer to this problem--you're just out of luck. Thank your fellow site members.

Posted 1-May-17 16:36pm

dynamichael

Comments

Shahin Khorshidnia 13-Jul-17 5:36am

Hello, if I were you I would not stick to trivial matters.

Shahin Khorshidnia 29-Jul-17 5:30am

Ok Member 11425182, Thanks for the advice.

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-06-14T10:10:00

OK, now I see you're using System.Drawing. For performance reasons, never use SetPixel/GetPixel! Use System.Drawing.Bitmap.LockBits. The MSDN help page has a code sample:
http://msdn.microsoft.com/en-us/library/system.drawing.bitmap.aspx[^].

There are different approaches to color balance. You can implement the simplest approach: a manual balance. You present reg, green and blue sliders; the user adds or reduces the contribution of each; and you retouch each color component one by one for each pixel.

—SA