static public ushort[] CreateDarkMedian(AstroPhoto.LibRaw.Instance libraw, string path)
{
var rawDir = System.IO.Path.Combine(path, "RAW");
var stackFiles = System.IO.Directory.GetFiles(rawDir, "*.arw");
ushort[][] pixels = new ushort[stackFiles.Length][];
int size = -1;
for (int i = 0; i < stackFiles.Length; i++)
{
using (var rawImage = libraw.load_raw(stackFiles[i])) {
size = rawImage.Height * rawImage.Width;
pixels[i] = rawImage.GetRawPixels();
}
}
ushort[] median = new ushort[size];
for (int i = 0; i < size; i++)
{
ushort[] line = new ushort[stackFiles.Length];
for (int j = 0; j < stackFiles.Length; j++)
{
line[j] = pixels[j][i];
}
Array.Sort(line);
if (stackFiles.Length % 2 == 0)
{
median[i] = (ushort)((line[stackFiles.Length / 2 - 1] + line[stackFiles.Length / 2]) / 2);
}
else
{
median[i] = line[stackFiles.Length / 2];
}
}
return(median);
}
private RawImage loadRaw(string filePath)
{
var ext = System.IO.Path.GetExtension(filePath).ToLower();
if (ext == ".cfa" || ext == ".fit")
{
return(new RawImage(filePath));
}
return(libraw.load_raw(filePath));
}
static public float[] CreateDarkAvg(AstroPhoto.LibRaw.Instance libraw, string path, out int width, out int height)
{
var rawDir = System.IO.Path.Combine(path, "RAW");
var stackFiles = System.IO.Directory.GetFiles(rawDir, "*.arw");
float[] sum = null;
int size = 0;
width = 0;
height = 0;
for (int i = 0; i < stackFiles.Length; i++)
{
using (var rawImage = libraw.load_raw(stackFiles[i])) {
if (sum == null)
{
width = rawImage.Width;
height = rawImage.Height;
size = width * height;
sum = new float[size];
for (int j = 0; j < size; j++)
{
sum[j] = 0.0f;
}
}
ushort[] _pixels = rawImage.GetRawPixels();
for (int j = 0; j < size; j++)
{
sum[j] += _pixels[j];
}
}
}
for (int j = 0; j < sum.Length; j++)
{
sum[j] /= stackFiles.Length;
}
return(sum);
}