I want to get the bit depth (and color space) of an image file with c#.
Here are my testfiles. Using the properties of the windows explorer, I verified their bit depths (8, 16, 24, 48, 96).
BitmapImage.Format.BitsPerPixel
var source = new BitmapImage(new Uri(path));
int bitsPerPixel = source.Format.BitsPerPixel;
Return 8 for 8-bit grayscale, but 32 for all other types.
Image.PixelFormat
Image img = Image.FromFile(path);
string pixelFormat = img.PixelFormat.ToString();
PixelFormat works for all but the 32-bit floating point image, where it throws a System.OutOfMemoryException.
Image.PropertyItems
This answer suggests the PropertyItems property.
Works like the example above, but throws an exception with 32-bit images.
This answer suggests the use of the Windows API Code Pack. But I would rather use a native c# feature.
ShellObject so = ShellObject.FromParsingName(filename)
int bitdepth = convert.ToInt32(so.Properties.GetProperty(SystemProperties.System.Image.Bitdepth).ValueAsObject);
Is there a built-in method to determine the bit depth of an images, which works with 1, 8, 16, 24, 48, 96 bits?