C#获取图片中的颜色

Bitmap.GetPixel Method

以下是msdn中的例子

private void GetPixel_Example(PaintEventArgs e)
{

// Create a Bitmap object from an image file.
Bitmap myBitmap = new Bitmap("Grapes.jpg");

// Get the color of a pixel within myBitmap.
Color pixelColor = myBitmap.GetPixel(50, 50);

// Fill a rectangle with pixelColor.
SolidBrush pixelBrush = new SolidBrush(pixelColor);
e.Graphics.FillRectangle(pixelBrush, 0, 0, 100, 100);
}

[/code]
只要获得了color之后可以通过

private string Color2String(Color clr)

{

return String.Format(@"{0},{1},{2}", clr.R, clr.G, clr.B);

}

从而得到图片中的三原色的数值