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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Franco Gori
  • Vol. 27, Iss. 11 — Nov. 1, 2010
  • pp: 2381–2386

Real-time terahertz scanning imaging by use of a pyroelectric array camera and image denoising

Qi Li, Sheng-Hui Ding, Rui Yao, and Qi Wang  »View Author Affiliations

JOSA A, Vol. 27, Issue 11, pp. 2381-2386 (2010)

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A high-resolution large-area terahertz (THz) scanning imaging system is demonstrated based on a 124 × 124 pyroelectric array camera and a CO 2 pumped continuous-wave THz laser. By applying a scanning mechanism to the real-time imaging setup, images of large-area targets were accomplished. Self-made resolution charts were employed to test the resolution. In order to improve the image quality, the noise in the images was studied and modeled, and then the performance of several denoising methods was compared with real-time THz original images. The experimental results show that, with the help of anisotropic diffusion, noise can be effectively suppressed, and the results are visually pleasant even when there is great attenuation. Those results greatly confirm application potentials of THz imaging using pyroelectric cameras in the field of concealed object detection.

© 2010 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

Original Manuscript: August 26, 2010
Revised Manuscript: September 20, 2010
Manuscript Accepted: September 21, 2010
Published: October 11, 2010

Qi Li, Sheng-Hui Ding, Rui Yao, and Qi Wang, "Real-time terahertz scanning imaging by use of a pyroelectric array camera and image denoising," J. Opt. Soc. Am. A 27, 2381-2386 (2010)

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