GRB Value

Mramesh · #1 (**permalink**) 01-02-2008, 11:29 PM

Hi,
I am working on project where I have to calculate the value RGB value of particular pixel. I make a function in C#. Please check, Is there any error in function. What I am trying to get is pass the cordinate of X and Y and I want the corresponding RGB value of particular Cordinate.

Code:

Public Double GetRGBValue(int X, int Y)
{
Bitmap grayscale=(Bitmap)pioOriginal.Image.Clone("Path of Image Saved");
Color color = grayscale.GetPixel(X,Y);
Double graycolorVal= (color.R + Color.G + color.B)/3;
Return graycolarVal;
}

And I want to call like this:

lbl.text=GetRGBValue(144,49);

$enthil · #2 (**permalink**) 01-03-2008, 02:02 AM

Can you plz figure out the error message you are facing?

and GetRGBValue() function returns a double value and in the below line you are storing the return value in lbl.text which accepts only string.

lbl.text=GetRGBValue(144,49);

it.wily · #3 (**permalink**) 01-03-2008, 02:22 AM

Try this function

Quote:

public Double GetRGBValue(int X, int Y)
{
Bitmap grayscale = new Bitmap(@"Path of Image Saved");
Color color = grayscale.GetPixel(X,Y);
Double graycolorVal= (color.R + color.G + color.B)/3;
return graycolorVal;
}

Store the return value like this

Double rgbval = GetRGBValue(150,10);

kingmaker · #4 (**permalink**) 01-19-2008, 11:22 PM

if i get the value from all pixels of an image ..for change the effects of an image....it should be slow right?

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