NFIQ2::FingerprintImageData from bmp or wsq

Question

NFIQ2::FingerprintImageData from bmp or wsq

letisoft opened this issue 2 years ago · 5 comments

letisoft commented 2 years ago

Hello,

How can I get FingerprintImageData from bmp or wsq?

Any sample will help.

Thanks!

Answer 1 · 2023-04-17T17:28:26.000Z

The NFIQ2 CLI makes use of Biometric Evaluation framework for this. Code is included in this repo.

Answer 2 · 2023-04-17T17:32:25.000Z

Hello,

Can you please point me to any src to check?

Thanks in advance!
V

Answer 3 · 2023-04-17T17:34:05.000Z

NFIQ2/NFIQ2Algorithm/src/tool/nfiq2_ui_image.cpp

Answer 4 · 2023-04-17T17:41:48.000Z

Thank you very much!

sorry I had a look, but still cannot get it how to use bmp to get FingerprintImageData.
I have the raw data from the sensor, I can get it in bmp. I know the image dimensions (W x H and DPI) but not sure what's next!

In short I have android device with a cross match sensor and I want to make sure images are good enough!

I do really appreciate you help & patience with non experts!

V

Answer 5 · 2023-04-17T18:18:12.000Z

On Android, if you have a BMP, seems like you can use getPixels to decompress it into raw bytes. Then pass the buffer to this FingerprintImageData constructor. You're going to need to convert the int[] to uint8_t[] (i.e., unsigned char) though. Sorry, I can't be much further help there.