public static void PNG(string filePath, TifFile tif, bool autoScale = false)
{
if (tif.Channels.Length == 1)
{
double[,] gray = tif.Channels[0].Values;
if (autoScale)
{
gray = Adjust.AutoScale(gray);
}
PNG(filePath, gray);
return;
}
else if (tif.Channels.Length >= 3)
{
double[,] r = tif.Channels[0].Values;
double[,] g = tif.Channels[1].Values;
double[,] b = tif.Channels[2].Values;
if (autoScale)
{
r = Adjust.AutoScale(r);
g = Adjust.AutoScale(g);
b = Adjust.AutoScale(b);
}
PNG(filePath, r, g, b);
return;
}
else
{
throw new InvalidOperationException("unsupported number of channels");
}
}
public void Test_Load_ColorImage_16bitGrayscale()
{
string filePath = Path.Combine(SampleData.DataFolder, "calibration-20x-ruler-0.32365.tif");
TifFile tif = new(filePath);
Assert.AreEqual(1896, tif.Channels[0].Values[0, 0]);
double[,] scaled = Adjust.AutoScale(tif.Channels[0].Values);
Assert.AreNotEqual(1896, scaled[0, 0]);
}
public void Test_Export_AllTestImages()
{
string outputFolder = Path.GetFullPath(Path.Combine(TestContext.CurrentContext.TestDirectory, "output"));
if (!Directory.Exists(outputFolder))
{
Directory.CreateDirectory(outputFolder);
}
foreach (string tifPath in SampleData.TifFiles)
{
TifFile tif = new(tifPath);
Console.WriteLine(tif);
string outputPath = Path.Combine(outputFolder, Path.GetFileName(tifPath) + ".png");
Console.WriteLine(outputPath);
Export.PNG(outputPath, Adjust.AutoScale(tif.Channels[0].Values));
}
}