相关实验视频

Updated: Sep 19, 2025

Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography

Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography

Published on: September 2, 2020

在指纹中弥合尺寸以提高独特性:从单个非接触式2D指纹图像中恢复3D细节

Chengdong Dong, Ajay Kumar

IEEE transactions on pattern analysis and machine intelligence

|June 6, 2025

概括

本研究提出了一种新方法,可以从二维图像中创建3D指纹模板,从而提高无接触式3D指纹识别的准确性,并实现3D到2D匹配. 这推动了生物识别安全系统的发展.

科学领域:

生物识别信息生物识别信息
计算机视觉计算机视觉
模式识别模式识别

背景情况:

无接触3D指纹系统比传统方法提供了更高的准确性和卫生性.
获得3D指纹是一项挑战,阻碍了这项技术的采用.
将3D与2D指纹模板相匹配是一个关键的,但尚未开发的功能.

研究的目的:

开发一个框架,从单个2D无接触指纹图像中恢复3D细节模板.
为了使3D到3D和3D到2D指纹模板的准确对齐和匹配.
合成现实的无接触指纹图像,并建立一个带有3D基本真相的合成数据库.

主要方法:

一个新的框架直接从2D无接触指纹图像中恢复3D细节模板.
在3D空间中精确对准3D细节模板的技术,包括对视角转换的补偿.
一种新方法来合成现实的非接触式指纹图像并生成合成数据库.

主要成果:

从单个2D无接触指纹图像中成功恢复相应的3D细节模板.
在匹配3D到3D和3D到2D指纹模板中提高了准确性.
创建一个大型合成数据库的无接触指纹与3D地面真相.

结论:

拟议的框架克服了3D指纹采集和匹配的关键挑战.
开发的功能显著提高了3D指纹识别系统的性能.
理论分析支持回收的3D细节模板优于2D对应模板在生物识别应用中的优势.

更多相关视频

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

Published on: April 21, 2023

Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

Published on: October 6, 2019

相关概念视频

IR Frequency Region: Fingerprint Region

IR Frequency Region: Fingerprint Region

IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...

Three-Dimensional Microscopy in Microbiology

Three-Dimensional Microscopy in Microbiology

Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...