[fprint] Image Format Returned from fprint

[Bastien Nocera]

On Thu, 2014-10-30 at 15:42 -0400, Alexander Martin wrote:
> Hi fprint community!
> 
> 
> I am interested in using this tool and was curious about the type of
> image that is returned from the fingerprint reader. Is it JPG, PNG,
> WSQ, etc.?

They're returned in a format that's specific to each device. The driver
within libfprint then transforms it into a format understandable by the
NBIS code (a grayscale, uncompressed image).

fp_img_save_to_file() saves the file to PBM format.

Cheers