Finding specific pixel colors of a BitmapImage
- by Andrew Shepherd
I have a WPF BitmapImage which I loaded from a .JPG file, as follows:
this.m_image1.Source = new BitmapImage(new Uri(path));
I want to query as to what the colour is at specific points. For example, what is the RGB value at pixel (65,32)?
How do I go about this? I was taking this approach:
ImageSource ims = m_image1.Source;
BitmapImage bitmapImage = (BitmapImage)ims;
int height = bitmapImage.PixelHeight;
int width = bitmapImage.PixelWidth;
int nStride = (bitmapImage.PixelWidth * bitmapImage.Format.BitsPerPixel + 7) / 8;
byte[] pixelByteArray = new byte[bitmapImage.PixelHeight * nStride];
bitmapImage.CopyPixels(pixelByteArray, nStride, 0);
Though I will confess there's a bit of monkey-see, monkey do going on with this code.
Anyway, is there a straightforward way to process this array of bytes to convert to RGB values?
