Object reconstruction from adaptive compressive measurements in feature-specific imaging
Applied Optics, Vol. 49, Issue 34, pp. H27-H39 (2010)
http://dx.doi.org/10.1364/AO.49.000H27
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Abstract
Static feature-specific imaging (SFSI), where the measurement basis remains fixed/static during the data measurement process, has been shown to be superior to conventional imaging for reconstruction tasks. Here, we describe an adaptive approach that utilizes past measurements to inform the choice of measurement basis for future measurements in an FSI system, with the goal of maximizing the reconstruction fidelity while employing the fewest measurements. An algorithm to implement this adaptive approach is developed for FSI systems, and the resulting systems are referred to as adaptive FSI (AFSI) systems. A simulation study is used to analyze the performance of the AFSI system for two choices of measurement basis: principal component (PC) and Hadamard. Here, the root mean squared error (RMSE) metric is employed to quantify the reconstruction fidelity. We observe that an AFSI system achieves as much as 30% lower RMSE compared to an SFSI system. The performance improvement of the AFSI systems is verified using an experimental setup employed using a digital micromirror device (DMD) array.
© 2010 Optical Society of America
OCIS Codes
(100.0100) Image processing : Image processing
(110.1085) Imaging systems : Adaptive imaging
(110.1758) Imaging systems : Computational imaging
(110.3010) Imaging systems : Image reconstruction techniques
ToC Category:
SIGNAL RECOVERY AND COMPUTATIONAL SENSING AND IMAGING
History
Original Manuscript: May 12, 2010
Manuscript Accepted: July 30, 2010
Published: October 19, 2010
Citation
Jun Ke, Amit Ashok, and Mark A. Neifeld, "Object reconstruction from adaptive compressive measurements in feature-specific imaging," Appl. Opt. 49, H27-H39 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-34-H27
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