Title :
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
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;
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
DOI :
10.1109/ICECS.2009.5410755
