private Bitmap processImgForScanning(Bitmap imgInput)
{
using (MemoryStream memstream = new MemoryStream())
{
imgInput.Save(memstream, ImageFormat.Tiff);
MagickImage img = new MagickImage(memstream.ToArray());
if (sharpen)
{
img.Sharpen((int)sharpenIntX.Value, (int)sharpenIntY.Value, Channels.All);
}
if (autoGamma)
{
img.AutoGamma();
}
if (enhance)
{
img.Enhance();
}
if (contrast)
{
img.Contrast();
}
if (autoLevel)
{
img.AutoLevel();
}
if (autoOrient)
{
img.AutoOrient();
}
if (despeckle)
{
img.Despeckle();
}
if (medianFilter)
{
img.MedianFilter((int)medianInt.Value);
}
if (unsharpmask)
{
img.Unsharpmask(6.8, 4, 4,0);
}
if (wtThreshold)
{
img.LinearStretch((float)0.9, 0.1);
//img.WhiteThreshold((int)wtThresInt.Value);
//img.ReduceNoise();
//img.Grayscale(PixelIntensityMethod.Brightness);
}
if (invert)
{
img.Negate();
}
return img.ToBitmap();
}
}
private void ExecuteLinearStretch(XmlElement element, MagickImage image)
{
Percentage blackPoint_ = Variables.GetValue<Percentage>(element, "blackPoint");
Percentage whitePoint_ = Variables.GetValue<Percentage>(element, "whitePoint");
image.LinearStretch(blackPoint_, whitePoint_);
}
public void Test_LinearStretch()
{
using (MagickImage image = new MagickImage(Files.FujiFilmFinePixS1ProJPG))
{
image.Scale(100, 100);
image.LinearStretch((Percentage)1, (Percentage)1);
using (MemoryStream memStream = new MemoryStream())
{
image.Format = MagickFormat.Histogram;
image.Write(memStream);
memStream.Position = 0;
using (MagickImage histogram = new MagickImage(memStream))
{
#if Q8
ColorAssert.AreEqual(MagickColors.Red, histogram, 66, 11);
ColorAssert.AreEqual(MagickColors.Lime, histogram, 95, 122);
ColorAssert.AreEqual(MagickColors.Blue, histogram, 204, 80);
#elif Q16 || Q16HDRI
ColorAssert.AreEqual(MagickColors.Red, histogram, 34, 182);
ColorAssert.AreEqual(MagickColors.Lime, histogram, 122, 193);
ColorAssert.AreEqual(MagickColors.Blue, histogram, 210, 194);
#else
#error Not implemented!
#endif
}
}
image.LinearStretch((Percentage)10, (Percentage)90);
using (MemoryStream memStream = new MemoryStream())
{
image.Format = MagickFormat.Histogram;
image.Write(memStream);
memStream.Position = 0;
using (MagickImage histogram = new MagickImage(memStream))
{
#if Q8
ColorAssert.AreEqual(MagickColors.Red, histogram, 103, 183);
ColorAssert.AreEqual(MagickColors.Lime, histogram, 147, 188);
ColorAssert.AreEqual(MagickColors.Blue, histogram, 194, 190);
#elif Q16 || Q16HDRI
ColorAssert.AreEqual(MagickColors.Red, histogram, 221, 182);
ColorAssert.AreEqual(MagickColors.Lime, histogram, 12, 183);
ColorAssert.AreEqual(MagickColors.Blue, histogram, 45, 194);
#else
#error Not implemented!
#endif
}
}
}
}
