Journal ArticleDOI
Coded aperture imaging with multiple measurements
TLDR
In this article, a general theory of coded aperture imaging with multiple measurements is presented, and an image reconstruction scheme from the coded images is described that results in a maximum signal-to-noise ratio.Abstract:
In coded aperture imaging, only aperture arrays consisting of (0, 1) elements are physically realizable. If multiple coded images are obtained with different aperture masks and the resulting detector images are suitably combined, a larger variety of aperture arrays, such as multilevel, complex-valued, vector-valued, or complementary arrays becomes applicable. We present a general theory of coded aperture imaging with multiple measurements. An image reconstruction scheme from the coded images is described that results in a maximum signal-to-noise ratio. Also, the design of sets of aperture arrays is addressed and explicitly solved for several important cases. It is shown how known classes of correlation arrays can be beneficially applied to coded aperture imaging.read more
Citations
More filters
Patent
Sensor system for identifying and tracking movements of multiple sources
TL;DR: In this paper, a system for identifying a human being from movement of the human being is presented, which includes a dual element pyroelectric detector, a Fresnel lens array, and a processor.
Journal ArticleDOI
Human Tracking With Wireless Distributed Pyroelectric Sensors
TL;DR: A wireless pyroelectric sensor system, composed of sensing modules (slaves), a synchronization and error rejection module (master), and a data fusion module (host), to perform human tracking and the computation workload distribution among slave, master, and host is investigated.
Journal ArticleDOI
Multiple Human Tracking and Identification With Wireless Distributed Pyroelectric Sensor Systems
TL;DR: The developed wireless distributed infrared sensor system can run as a standalone prisoner/patient monitoring system under any illumination conditions, as well as a complement for conventional video and audio human tracking and identification systems.
Journal ArticleDOI
Binary and quadriphase sequences with optimal autocorrelation properties: a survey
TL;DR: Known methods as well as several new construction techniques of binary and quadriphase sequences with optimal or best known autocorrelation properties are discussed in this correspondence.
Journal ArticleDOI
Computational Cameras: Convergence of Optics and Processing
Changyin Zhou,Shree K. Nayar +1 more
TL;DR: This paper uses the abstract notion of light field representation as a general tool to describe computational camera designs, where each camera can be formulated as a projection of a high-dimensional light field to a 2-D image sensor.
References
More filters
Journal ArticleDOI
Perfect ternary arrays
TL;DR: Four synthesizing methods for perfect ternary arrays are presented and new strong conditions for the existence of perfect arrays are developed, which can be used as starting arrays to construct additional perfect terNary sequences and arrays.
Journal ArticleDOI
Perfect binary arrays
TL;DR: With three specified construction procedures and based on few starting arrays, many new perfect binary arrays with increasing dimensions and sizes can be synthesized.
Journal Article
Imaging with coded-aperture masks.
TL;DR: In this paper, a variety of instruments results from selecting different coding patterns and from simple geometrical variations on this theme and various schemes which have been proposed and used and the methods of interpreting the data obtained with them are reniewed and compared.
Journal ArticleDOI
Infinite families of perfect binary arrays
TL;DR: In this article, it was shown that a doubly quasi-perfect binary array is equivalent to a quasiperfect binary array, which can be iterated to obtain larger perfect binary arrays.
Journal ArticleDOI
Constructing new perfect binary arrays
TL;DR: Construction methods are given which generate new two-dimensional perfect binary arrays, four of which are larger than any previously reported.