Final Report: Novel correlation imaging and multispectral camera in the visible and infrared spectrum
Technical Report,20 Aug 2009,19 Aug 2013
ROCHESTER UNIV NY ROCHESTER United States
Pagination or Media Count:
In the rapidly emerging field of coded-aperture imaging, research is underway to improve the scope and quality of images in the visible and the infrared. In this research one needs to integrate the system design so as to enhance the combined effect of the lens and the digital processing. In this research we are studying a new camera system employing what we call correlation imaging. We have adapted the X-ray coded aperture imaging system of Dicke 1968 and others so that it is operative in the visible and infrared, where diffraction effects need to be taken into account. This novel optical system includes a phase-only screen followed by a detector array. A band-limited uniformly redundant array diffraction pattern is formed when the phase screen is illuminated by a point source in object space. Correlation-type image processing is applied to recover the object. Excellent imaging results of both binary and continuous tone objects can be obtained. In this research program, we are also conducting a separate, but related study of speckle since it is important in the development of the phase screen. Also in image science there remains some fundamental question as to the possibility of imaging through a dilute turbid atmosphere and we are conducting research studies on this topic.
- Electrical and Electronic Equipment