Camera calibration and performance evaluation of Depth From Defocus (DFD)

Tao Xian; Murali Subbarao

doi:10.1117/12.631194

Camera calibration and performance evaluation of Depth From Defocus (DFD)

Tao Xian
, Murali Subbarao

Electrical Engineering

Stony Brook University

Stony Brook University

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

Real-time and accurate autofocusing of stationary and moving objects is an important problem in modem digital cameras. Depth From Defocus (DFD) is a technique for autofocusing that needs only two or three images recorded with different camera parameters. In practice, there exist many factors that affect the performance of DFD algorithms, such as nonlinear sensor response, lens vignetting, and magnification variation. In this paper, we present calibration methods and algorithms for these three factors. Their correctness and effects on the performance of DFD have been investigated with experiments.

Original language	English
Article number	60000A
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6000
DOIs	https://doi.org/10.1117/12.631194
State	Published - 2005
Event	Two- and Three-Dimensional Methods for Inspection and Metrology III - Boston, MA, United States Duration: Oct 24 2005 → Oct 26 2005

Keywords

Autofocusing
Camera calibration
Depth From Defocus (DFD)
Lens vignetting
Magnification variation
Nonlinear sensor response

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10.1117/12.631194

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title = "Camera calibration and performance evaluation of Depth From Defocus (DFD)",

abstract = "Real-time and accurate autofocusing of stationary and moving objects is an important problem in modem digital cameras. Depth From Defocus (DFD) is a technique for autofocusing that needs only two or three images recorded with different camera parameters. In practice, there exist many factors that affect the performance of DFD algorithms, such as nonlinear sensor response, lens vignetting, and magnification variation. In this paper, we present calibration methods and algorithms for these three factors. Their correctness and effects on the performance of DFD have been investigated with experiments.",

keywords = "Autofocusing, Camera calibration, Depth From Defocus (DFD), Lens vignetting, Magnification variation, Nonlinear sensor response",

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language = "English",

volume = "6000",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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T1 - Camera calibration and performance evaluation of Depth From Defocus (DFD)

AU - Xian, Tao

AU - Subbarao, Murali

PY - 2005

Y1 - 2005

N2 - Real-time and accurate autofocusing of stationary and moving objects is an important problem in modem digital cameras. Depth From Defocus (DFD) is a technique for autofocusing that needs only two or three images recorded with different camera parameters. In practice, there exist many factors that affect the performance of DFD algorithms, such as nonlinear sensor response, lens vignetting, and magnification variation. In this paper, we present calibration methods and algorithms for these three factors. Their correctness and effects on the performance of DFD have been investigated with experiments.

AB - Real-time and accurate autofocusing of stationary and moving objects is an important problem in modem digital cameras. Depth From Defocus (DFD) is a technique for autofocusing that needs only two or three images recorded with different camera parameters. In practice, there exist many factors that affect the performance of DFD algorithms, such as nonlinear sensor response, lens vignetting, and magnification variation. In this paper, we present calibration methods and algorithms for these three factors. Their correctness and effects on the performance of DFD have been investigated with experiments.

KW - Autofocusing

KW - Camera calibration

KW - Depth From Defocus (DFD)

KW - Lens vignetting

KW - Magnification variation

KW - Nonlinear sensor response

UR - https://www.scopus.com/pages/publications/33644649856

U2 - 10.1117/12.631194

DO - 10.1117/12.631194

M3 - Conference article

SN - 0277-786X

VL - 6000

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 60000A

T2 - Two- and Three-Dimensional Methods for Inspection and Metrology III

Y2 - 24 October 2005 through 26 October 2005

ER -

Camera calibration and performance evaluation of Depth From Defocus (DFD)

Abstract

Keywords

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