Method and apparatus for coded aperture imaging

Image analysis – Image compression or coding

Reexamination Certificate

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C382S128000, C356S310000, C356S326000

Reexamination Certificate

active

08073268

ABSTRACT:
Methods for coded aperture imaging, and processing the data from coded aperture imaging are taught. Several snapshots of an image are acquired, each using a different coded aperture array. The several snapshots are combined together with appropriate weightings to form a single equivalent frame as are the aperture functions for the coded aperture arrays used. Combining several frames of data can improve the signal to noise ratio of the decode image and increase the resolution of the image. Preferably a balanced weighting system is used and image reconstruction is performed by inverting the covariance matrix formed by the covariance of the signals from a number of estimated trial points. Using a balanced weighting system reduces the covariance matrix to a diagonal or near diagonal matrix with a corresponding reduction in computational load. The techniques also reduces additive noise. Various technique for compensating for camera motion and identifying motion in the scene are also taught along with suitable apparatus for performing the invention.

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