Issue with Photometric Interpretation tag

Question

I'm capturing an image from an android mobile device and its in JPEG format. The image is of 72X72DPI and 24 bit. Now, when I try to convert this JPEG image to TIFF using LibTiff.Net and to set the tag Photometric Interpretation = 0 for MinIsWhite, the image turns negative (the white becomes black and black becomes white). The environment is Windows 8.1 64 bit, Visual Studio 2012. Can you please help/suggest how to resolve this issue? Any help is highly appreciated.

Thanks, Harshal

Answer 1

Use Photometric.MINISBLACK instead of Photometric.MINISWHITE.

If you absolutely must use Photometric.MINISWHITE in your images then the only option is to invert image data before writing it to TIFF.