Programmable resolution imager for imaging applications

Elisenda Roca; German Soriano; Servando Espejo; Rafael Dominguez-Castro; Gustavo Linan; Angel Rodriguez-Vazquez

doi:10.1117/12.385431

15 May 2000 Programmable resolution imager for imaging applications

Elisenda Roca, German Soriano, Servando Espejo, Rafael Dominguez-Castro, Gustavo Linan, Angel Rodriguez-Vazquez

Proceedings Volume 3965, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications; (2000) https://doi.org/10.1117/12.385431
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

In this paper a programmable imager with averaging capabilities will be described which is intended for averaging of different groups or sets of pixels formed by n X n kernels, n X m kernels or any group of randomly- selected pixels across the array. This imager is a 64 X 64 array which uses passive pixels with electronic shutter and anti-blooming structure that can be randomly accessed. The read-out stage includes a sole charge amplifier with programmable gain, a sample-and-hold structure and an analog buffer. This read-out structure is different from other existing imagers with variable resolution since it uses a sole charge amplifier, whereas the conventional structure employs an opamp per column plus another global opamp. this architecture allows a reduction of the fixed-pattern noise observed in standard imagers. The prototype also includes an analog to digital converter which provides the digital output of the images.

Citation Download Citation

Elisenda Roca, German Soriano, Servando Espejo, Rafael Dominguez-Castro, Gustavo Linan, and Angel Rodriguez-Vazquez "Programmable resolution imager for imaging applications", Proc. SPIE 3965, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications, (15 May 2000); https://doi.org/10.1117/12.385431

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