For the visualization of phase objects by use of a differentiation filter, the phase variation is changed into the intensity variation by differentiation, and then the differentiated image is integrated. In the method used in practice, the differentiated image has been recorded on a film, and then integrated by use of a filter. In this paper, however, the image differentiated by means of a filter is entered into a computer using a CCD camera and then integrated. As a result, the method provides rapid on-line processing. We have performed computer simulations and a detailed analysis of the differentiation filter and also provide the experimental results of three-dimensional image visualization.
© 2003 Optical Society of America
(100.6890) Image processing : Three-dimensional image processing
(110.0180) Imaging systems : Microscopy
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
Hideo Furuhashi, Kiyofumi Matsuda, and Chander P. Grover, "Visualization of Phase Objects by Use of a Differentiation Filter," Appl. Opt. 42, 218-226 (2003)