Windows biometric framework - Bad Capture Images

Question

I'm developing a .net application, which is necessary to obtain the image of a fingerprint through a biometric scanner.
Now I am using the following code:
https://msdn.microsoft.com/es-es/library/ee207405(v=vs.85).aspx
This we supplement with the proposal in this posthttps://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/f6f09403-e0b6-4977-b697-d5aabeb5b8ff/how-to-convert-winbiobir-data-into-image-using-windows-biometric-framework?forum=wdkto
to obtain a jpg image.
So far so good, but I found the problem with wbf the image is cut off on the sides,
I show examples (I show only the edges):
In this example, the image is cut on the left and right, but sometimes also makes it up and down and not very regular shapes, my theory
is that short sections where the image does not have a very good quality, but my case is important that information.
The image on the left is taken with this method, while the right is taken with neurotecnologic (same scanner).This
may seem minimal, I validations traces difficult as cutting your image removes some features on the edges,
so sometimes you have to repeatedly move your finger across the scanner to validate.
My question is if this is a problem Framework or is there some parameter in the capture function that allows me to return the whole
picture?
Regards Dario

Answer 1

Anybody ?
-R___K