Slight different in Cos image.

[michealChin]

Hi,

I have converted the code to pure c# however there are some discrepancy on the final image. So I try to visualize the orientation image for Sin, Cos and etc

I found out the Cos image generated from c# is as follow

Generated by Python code

Orientation (c#)

Orientation (Python)

Here is the original fingerprint

Enhance result from c#

Enhance result from Python

Could it be the different in the Cos orientation image as generated by both C# and Python that cause the subsequence failure in the final enhance image?

[Utkarsh-Deshmukh]

here are a few points that you can debug on:

• if the sin image is similar but the cos image is different, that is an issue. can you figure out what that would be happening?
• can you verify the gabor filter bank that you generate is correct or not?
• In the python code, there would be a variable in the function __ridge_freq called _mean_freq. Can you verify if this value matches with the one which you have derived?

[michealChin]

Finally I got my C# version working! Thanks again for you kind sharing! Hope you have a nice day!

[Utkarsh-Deshmukh]

glad that it worked!