Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Design of Large Field-of-View High-Resolution Miniaturized Imaging System | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 59546 10 pages doi 2007 59546 Research Article Design of Large Field-of-View High-Resolution Miniaturized Imaging System Nilesh A. Ahuja and N. K. Bose Department of Electrical Engineering Spatial and Temporal Signal Processing Center The Pennsylvania State University University Park PA 16802 USA Received 29 September 2006 Revised 7 February 2007 Accepted 16 April 2007 Recommended by Russell C. Hardie Steps are taken to design the optical system of lenslet array photoreceptor array plexus on curved surfaces to achieve a large field of view FOV with each lenslet capturing a portion of the scene. An optimal sampling rate in the image plane as determined by the pixel pitch is found by the use of an information theoretic performance measure. Since this rate turns out to be sub-Nyquist superresolution techniques can be applied to the multiple low-resolution LR images captured on the photoreceptor array to yield a single high-resolution HR image of an object of interest. Thus the computational imaging system proposed is capable of realizing both the specified resolution and specified FOV. Copyright 2007 N. A. Ahuja and N. K. Bose. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Images captured by most modern image acquisition systems require further processing in order to be useful. The overall imaging system can be therefore considered as a combination of an optical subsystem which includes the optical elements and the sensors and a digital subsystem that comprises of the algorithms employed to perform the necessary signal processing. Traditionally the design of the optical subsystem has been separated from the design of the digital subsystem. In recent years however there has been a .
