SecuGen.FDxSDKPro.jni

Class SGNFIQLib

java.lang.Object

SecuGen.FDxSDKPro.jni.SGNFIQLib

public class SGNFIQLib
extends java.lang.Object

This class is a JNI wrapper for the NFIQ algorithm developed by the National Institute of Standards and Technology.

Constructor Summary

Constructors

Constructor and Description
SGNFIQLib()

Method Summary

Modifier and Type	Method and Description
long	SGComputeNFIQ(byte[] imgBuf, long width, long height) Compute NIST Fingerprint Image Quality score for a 500DPI 8 bit grayscale fingerprint image.
long	SGComputeNFIQEx(byte[] imgBuf, long width, long height, long dpi) Compute NIST Fingerprint Image Quality score for an 8 bit grayscale fingerprint image.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SGNFIQLib

public SGNFIQLib()

Method Detail

SGComputeNFIQ

public long SGComputeNFIQ(byte[] imgBuf,
                          long width,
                          long height)

Compute NIST Fingerprint Image Quality score for a 500DPI 8 bit grayscale fingerprint image.

Parameters:

imgBuf - Byte array containing a raw fingerprint image.

width - The width of the image in pixels.

height - The height of the image in pixels.

Returns:

NFIQ score for the image that was processed
1 = highest quality fingerprint image
2 = high quality fingerprint image
3 = medium quality fingerprint image
4 = low quality fingerprint image
5 = lowest quality fingerprint image

SGComputeNFIQEx

public long SGComputeNFIQEx(byte[] imgBuf,
                            long width,
                            long height,
                            long dpi)

Compute NIST Fingerprint Image Quality score for an 8 bit grayscale fingerprint image.

Parameters:

imgBuf - Byte array containing a raw fingerprint image.

width - The width of the image in pixels.

height - The height of the image in pixels.

dpi - The resolution of the image in pixels per inch.

Returns:

NFIQ score for the image that was processed
1 = highest quality fingerprint image
2 = high quality fingerprint image
3 = medium quality fingerprint image
4 = low quality fingerprint image
5 = lowest quality fingerprint image