Drs Network & Imaging Systems, LLC

Ethentica, Inc.

Steven J Marteney

Alexander G Dickinson

George Dee Skidmore

Richard L Southerland

Ronald S Smith

Paul F Vachris

Andrew Cole

John A McMorris, Iii

Kristina F Jeppson

Shahin Hadjiabadi

Fredric F Derwitsch

Gregory A Mullins

A method of performing non-uniformity correction for an imaging system includes receiving image data from a detector. The method also includes retrieving stored correction coefficients from the memory. The method also includes retrieving a stored factory calibration reference frame. The method also includes acquiring an operational calibration reference frame. The method also includes computing updated correction coefficients based on the stored correction coefficients, the stored factory calibration reference frame, and the operational calibration reference frame. The method also includes computing the non-uniformity correction based on the updated correction coefficients. The method also includes forming a corrected image by applying the non-uniformity correction to the image data. The method further includes outputting the corrected image.

Error smoothing through global source non-uniformity correction

A system and method for using a relief object image generator for cursor control, computer access control, and operational parameter control is disclosed. The system includes a relief object image generator, a sensor array, an image processor, and a memory. The relief object image generator generates images of relief objects, such as fingerprints, brought in proximity of the exposed surface of the image generator. The image processor receives the image from the sensor array, processes the image, and compares the resulting descriptive information to stored information corresponding to authorized users. If a match is found, the user is granted access to the computer. The image processor may also process the image to determine image movement or the image's presence or absence. Detected movement is used to generate directional signals while the presence and abserice of the image is used to generate highlight and select signals. These signals conform to those generated by known mouse devices so the system of the present invention can replace a position variable device in the keyboard of a laptop or other portable computer without sacrificing functionality for the system. Other uses of the system disclosed herein include control of operational parameters for a device such as brightness and contrast for a monitor and the transmission of relief object images to remote sites for authentication of a user.

Method and system for computer access and cursor control using a relief object image generator

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Melbourne, FL, United States of America

Steven J Marteney