Title :
Evaluating effective resolution of an optical tomographic imaging system using a narrow-band correlation metric
Author :
Pierson, R.E. ; Chen, E.Y. ; Bishop, K.P. ; Mcmackin, L.
Author_Institution :
Appl. Technol. Associates, Albuquerque, NM, USA
Abstract :
An eight-view optical tomographic imaging system is currently in use to measure index of refraction changes within a heated air flow. Analysis of system performance requires a method for evaluating the accuracy of tomographic reconstructions as a function of the spatial frequency of structures within the air flow. A narrow-band spatial frequency correlation metric has been used to evaluate performance and to define an effective resolving power of the imaging system. We describe the metric, illustrate its application to tomographic flow imaging, and present comparisons of simulated and measured flows
Keywords :
flow measurement; flow simulation; image reconstruction; image resolution; optical correlation; optical tomography; effective resolving power; heated air flow; image resolution; index of refraction changes; measured flows; narrowband correlation metric; narrowband spatial frequency correlation metric; optical tomographic imaging system; simulated flows; spatial frequency; system performance analysis; tomographic reconstruction accuracy; Current measurement; Fluid flow measurement; Frequency; Image motion analysis; Image resolution; Optical imaging; Optical refraction; Performance analysis; Spatial resolution; Tomography;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.560550
