Visualization of phase objects by use of a differentiation filter.
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.
Furuhashi
Hideo
H
Optics Group, Institute for National Measurement Standards, National Research Council Canada, M36, 1200 Montreal Road, Ottawa, ON K1A OR6, Canada. furuhasi@in.aitech.ac.jp
Matsuda
Kiyofumi
K
Grover
Chander P
CP