NIST Fingerprint Image Quality 2
Fingerprint image quality assessment tool
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NFIQ2::Sizes Namespace Reference

Block size constants. More...

Variables

const unsigned int LocalRegionSquare { 32 }
 Number of pixels (in width and height) comprising a local region.
 
const unsigned int VerticallyAlignedLocalRegionWidth { 32 }
 Width after rotating local region to vertically align ridges.
 
const unsigned int VerticallyAlignedLocalRegionHeight { 16 }
 Height after rotating local region to vertically align ridges.
 

Detailed Description

Block size constants.

Variable Documentation

◆ LocalRegionSquare

const unsigned int NFIQ2::Sizes::LocalRegionSquare { 32 }

Number of pixels (in width and height) comprising a local region.

As defined by ISO/IEC 29794-4:202X, Section 5.1.2, "The size for each local region shall be 32 x 32 pixels, which is sufficient to cover 2 clear ridges."

Definition at line 467 of file nfiq2_constants.hpp.

◆ VerticallyAlignedLocalRegionWidth

const unsigned int NFIQ2::Sizes::VerticallyAlignedLocalRegionWidth { 32 }

Width after rotating local region to vertically align ridges.

Definition at line 469 of file nfiq2_constants.hpp.

◆ VerticallyAlignedLocalRegionHeight

const unsigned int NFIQ2::Sizes::VerticallyAlignedLocalRegionHeight { 16 }

Height after rotating local region to vertically align ridges.

Definition at line 471 of file nfiq2_constants.hpp.