// <summary>
/// Calculate Mean G-SSIM by pixels of two images
/// </summary>
/// <param name="lumaReference">value of pixels in reference image</param>
/// <param name="lumaDistorted">value of pixels in distorted image</param>
/// <returns>Mean G-SSIM</returns>
public double CalcMeanGssim(double[,] lumaReference, double[,] lumaDistorted)
{
if (lumaReference == null)
{
throw new ArgumentNullException("lumaReference");
}
if (lumaDistorted == null)
{
throw new ArgumentNullException("lumaDistorted");
}
int width = lumaReference.GetLength(0);
int height = lumaReference.GetLength(1);
BaseAuxis = new SsimAuxiliaries(lumaReference, lumaDistorted, Params.WindowWidth, Params.WindowHeight);
GradAuxis = new SsimAuxiliaries(GetGradient(lumaReference), GetGradient(lumaDistorted), Params.WindowWidth, Params.WindowHeight);
double quality = 0.0;
for (int x = 0; x <= width - Params.WindowWidth; x++)
{
for (int y = 0; y <= height - Params.WindowHeight; y++)
{
quality += CalcWindowGssim(x, y);
}
}
return(quality / (width - Params.WindowWidth + 1) / (height - Params.WindowHeight + 1));
}
// <summary>
/// Calculate Mean G-SSIM by pixels of two images
/// </summary>
/// <param name="lumaReference">value of pixels in reference image</param>
/// <param name="lumaDistorted">value of pixels in distorted image</param>
/// <returns>Mean G-SSIM</returns>
public double CalcMeanGssim(double[,] lumaReference, double[,] lumaDistorted)
{
if (lumaReference == null)
{
throw new ArgumentNullException("lumaReference");
}
if (lumaDistorted == null)
{
throw new ArgumentNullException("lumaDistorted");
}
int width = lumaReference.GetLength(0);
int height = lumaReference.GetLength(1);
BaseAuxis = new SsimAuxiliaries(lumaReference, lumaDistorted, Params.WindowWidth, Params.WindowHeight);
GradAuxis = new SsimAuxiliaries(GetGradient(lumaReference), GetGradient(lumaDistorted), Params.WindowWidth, Params.WindowHeight);
double quality = 0.0;
for (int x = 0; x <= width - Params.WindowWidth; x++)
{
for (int y = 0; y <= height - Params.WindowHeight; y++)
{
quality += CalcWindowGssim(x, y);
}
}
return quality / (width - Params.WindowWidth + 1) / (height - Params.WindowHeight + 1);
}