A 641times128-pixel vision sensor, whose pixels estimate and perform a 1b quantization on the local contrast with a low energy budget is presented in this paper. The pixel-embedded time-adaptive visual processing is based on a charge-transfer mechanism, featuring no DC power consumption. The asynchronous readout process takes 147 mus and dispatches the column address of each asserted pixel, significantly reducing the chip activity at the interface. For typical indoor visual contrast estimation, involving 5% of the total number of pixels, the sensor exhibits a power consumption of 100 muW at 3.3V and 50 frames/s.

A 100μW 64x128-Pixel Contrast-Based Asynchronous Binary Vision Sensor for Wireless Sensor Networks

Massari, Nicola;Gottardi, Massimo;
2008

Abstract

A 641times128-pixel vision sensor, whose pixels estimate and perform a 1b quantization on the local contrast with a low energy budget is presented in this paper. The pixel-embedded time-adaptive visual processing is based on a charge-transfer mechanism, featuring no DC power consumption. The asynchronous readout process takes 147 mus and dispatches the column address of each asserted pixel, significantly reducing the chip activity at the interface. For typical indoor visual contrast estimation, involving 5% of the total number of pixels, the sensor exhibits a power consumption of 100 muW at 3.3V and 50 frames/s.
9781424420100
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11582/8084
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
social impact