internal static Image OnLoaded(Image image, ImageMetadata metadata, IList <Color> palette)
{
// try to fix invalid image resolution
FixResolution();
// apply orientation
ApplyOrientation();
// determine whether bitmap should be inverted
bool invert = false;
if (image.BitsPerPixel <= 8 && palette != null)
{
// convert color palette
if (!BitmapExtensions.IsGrayScalePalette(image.BitsPerPixel, palette, out bool invertedPalette))
{
return(image.ApplyPalette(palette));
}
invert = invertedPalette;
// remove palette
metadata?.RemovePropertyItems(x => x.Id == (int)TIFFField.PhotometricInterpretation ||
x.Id == (int)TIFFField.ColorMap);
}
else
{
invert |= ApplyPhotometricInterpretation();
}
if (invert)
{
image.Not(image);
}
return(image);
// private methods
void FixResolution()
{
(float w, float h)[] standardResolutions = new (float, float)[]
