15 May 2000 Programmable resolution imager for imaging applications
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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.
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Elisenda Roca, Elisenda Roca, German Soriano, German Soriano, Servando Espejo, Servando Espejo, Rafael Dominguez-Castro, Rafael Dominguez-Castro, Gustavo Linan, Gustavo Linan, Angel Rodriguez-Vazquez, 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); doi: 10.1117/12.385431; https://doi.org/10.1117/12.385431
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