Speed up Matrix Addition in C#

Question

I\'d like to optimize this piece of code :

public void PopulatePixelValueMatrices(GenericImage image,int Width, int Height)
{            
        for (int x = 0;         


        

Answer 1

I'm not sure if it's faster but you may write something like;

public void PopulatePixelValueMatrices(GenericImage image,int Width, int Height)
{            
        Byte pixelValue;
        for (int x = 0; x < Width; x++)
        {
            for (int y = 0; y < Height; y++)
            {
                pixelValue = image.GetPixel(x, y).B;
                this.sumOfPixelValues[x, y] += pixelValue;
                this.sumOfPixelValuesSquared[x, y] += pixelValue * pixelValue;
            }
        }
}