On-chip data compression for I.R. image sensors

Author

Thabuis, Tristan ; Villard, Patrick ; Belleville, Marc ; Sicard, Gilles ; Pistone, Frederic ; Maillart, Patrick ; Decaens, Gilbert

Author_Institution

LETI, CEA, Grenoble, France

fYear

2009

fDate

13-16 Dec. 2009

Firstpage

828

Lastpage

831

Abstract

An IR imager read-out circuit embedding an enhanced decorrelation scheme based on first level Haar wavelet transform and predictive dynamic range estimation is proposed in this paper. This scheme provides lower power consumption, thanks to a reduced ADC resolution and a decreased output data-rate, at the expense of few reconstruction artifacts. A detailed circuit implementation is proposed and its limitations discussed.

Keywords

Haar transforms; analogue-digital conversion; data compression; decorrelation; image sensors; infrared imaging; low-power electronics; ADC resolution; analog-to-digital conversion; decorrelation scheme; first level Haar wavelet transform; infrared image sensors; on-chip data compression; power consumption; predictive dynamic range estimation; Circuits; Data compression; Decorrelation; Discrete wavelet transforms; Energy consumption; Entropy; Gain control; Image sensors; Pixel; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits, and Systems, 2009. ICECS 2009. 16th IEEE International Conference on

Conference_Location

Yasmine Hammamet

Print_ISBN

978-1-4244-5090-9

Electronic_ISBN

978-1-4244-5091-6

Type

conf

DOI

10.1109/ICECS.2009.5410755

Filename

5410755