Mr. Junfeng Song Profile

Junfeng Song

at National Institute of Standards and Technology

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Author

Publications (4)

Proceedings Article | 10 June 2010 Paper

Topography measurements for correlations of standard cartridge cases

T. Vorburger, J. Song, W. Chu, T. Renegar, A. Zheng, J. Yen, R. Thompson, R. Silver, B. Bachrach, M. Ols

Proceedings Volume 7729, 77291D (2010) https://doi.org/10.1117/12.859918

KEYWORDS: Standards development, Objectives, Confocal microscopy, Firearms, Microscopes, Optical imaging, Image acquisition, Optical microscopes, Databases, Imaging systems

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Proceedings Article | 3 June 2010 Paper

Optimal compression and binarization of signature profiles for automated bullet identification systems

Wei Chu, John Song, Theodore Vorburger, Robert Thompson, Thomas Renegar, Richard Silver

Proceedings Volume 7729, 77291C (2010) https://doi.org/10.1117/12.859858

KEYWORDS: Edge detection, Image processing, System identification, Firearms, Binary data, Microscopes, Manufacturing, Forensic science, Image compression, Sensors

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Proceedings Article | 10 September 2007 Paper

A novel parameter proposed for 2D and 3D topography measurements and comparisons

John Song, Ted Vorburger

Proceedings Volume 6672, 66720M (2007) https://doi.org/10.1117/12.734424

KEYWORDS: 3D metrology, Standards development, 3D imaging standards, Microscopes, 3D acquisition, Confocal microscopy, Metrology, Prototyping, Image filtering, Gaussian filters

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Proceedings Article | 13 October 2006 Paper

Topography measurements and applications

Junfeng Song, Theodore Vorburger

Proceedings Volume 6280, 62801T (2006) https://doi.org/10.1117/12.716162

KEYWORDS: 3D metrology, Microscopes, Confocal microscopy, Forensic science, Gaussian filters, Manufacturing, 3D acquisition, Metrology, Surface roughness, Standards development

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