Abstract

We propose an optical-scanning-based imaging system, useful for directly acquiring the directional gradient and/or the Laplacian of an image. Such operations are crucial in edge detection, edge enhancement, and feature extraction. Digital edge-detection techniques tend to be computationally intensive as well as noise sensitive, as these derivative-based operators essentially constitute high-pass filters. Since we employ synchronous temporal detection to detect gradients in a direct fashion, noise suppression is greatly enhanced. Proof-of-principle results demonstrate the feasibility of our technique.

© 1992 Optical Society of America

Edge detection based on gradient ghost imaging

Xue-Feng Liu, Xu-Ri Yao, Ruo-Ming Lan, Chao Wang, and Guang-Jie Zhai
Opt. Express 23(26) 33802-33811 (2015)

Single-photon detection and imaging with a 10-Hz repetitively pulsed ultrasensitive coherent amplifier

Rolf W. F Gross, Lissa Garman-DuVall, and Sherwin T. Amimoto
Opt. Lett. 17(1) 82-84 (1992)

New method for designing the stigmatically imaging gradient-index lenses of spherical symmetry

J. Sochacki, J. R. Flores, and C. Gómez-Reino
Appl. Opt. 31(25) 5178-5183 (1992)

Numerical method for the analysis of optical waveguides

Tsuneyoshi Nakayama, Motohiro Takano, Kousuke Yakubo, and Takayuki Yamanaka
Opt. Lett. 17(5) 326-328 (1992)

Explosion of a liquid film in contact with a pulse-heated solid surface detected by the probe-beam deflection method

Andrew C. Tam, Nhan Do, Leander Klees, Peter T. Leung, and Wing P. Leung
Opt. Lett. 17(24) 1809-1811 (1992)