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2. Improvement of Two-Dimensional Terahertz Image by Digital Image Processing

Author

Keun-Ju Kim, Seuk-Gy Jeon, Chong-Won Yong, Yun-Sik Jin, Chae-Hwa Shon, and Sun-Shin Jung

Subjects
Signal processing, Digital image, Optics, Homomorphic filtering, business.industry, Computer science, Computer Science::Computer Vision and Pattern Recognition, Digital image processing, Image processing, business, Image resolution, Signal, Digital signal processing
Abstract

Two-dimensional (2D) images that are produced by terahertz (THz) irradiation we presented. It is possible to obtain 2D image of various materials by observing the amplitude and the phase of the THz signals which go through them. Better images are produced by combining the amplitude and phase of the signal rather than using only one of these. Homomorphic filtering that is one elf the well-known technique of digital image signal processing is effective to reduce the noise signal and can provide better quality images. The results can be applied to real-time imaging afterwards.

Published
2005
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