Adaptive Gain and Analog Wavelet Transform for Low-Power Infrared Image Sensors | Zendy

Patrick Villard | Zendy; Tristan Thabuis | Zendy; MariePierre Belleville | Zendy; Gilles Sicard | Zendy; Gilbert Decaens | Zendy; M. Zécri | Zendy

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Adaptive Gain and Analog Wavelet Transform for Low-Power Infrared Image Sensors

Author(s) -

Patrick Villard,

Tristan Thabuis,

MariePierre Belleville,

Gilles Sicard,

Gilbert Decaens,

M. Zécri

Publication year - 2012

Publication title -

active and passive electronic components

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.144

H-Index - 22

eISSN - 1026-7034

pISSN - 0882-7516

DOI - 10.1155/2012/610176

Subject(s) - wavelet transform , computer science , pixel , font , artificial intelligence , mathematics , wavelet

International audienceA decorrelation and analog-to-digital conversion scheme aiming to reduce the power consumption of infrared image sensors is presented in this paper. To exploit both intraframe redundancy and inherent photon shot noise characteristics, a column based 1D Haar analog wavelet transform combined with variable gain amplification prior to A/D conversion is used. This allows to use only an 11-bit ADC, instead of a 13-bit one, and to save 15% of data transfer. An 8x16 pixels test circuit demonstrates this functionality

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