Details

Autor(en) / Beteiligte

• Jaehyuk Choi
• Seokjun Park
• Jihyun Cho
• Euisik Yoon

Titel

A 3.4µW CMOS image sensor with embedded feature-extraction algorithm for motion-triggered object-of-interest imaging

Ist Teil von

• 2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, 2013, p.478-479

Ort / Verlag

IEEE

Erscheinungsjahr

2013

Quelle

IEL

Beschreibungen/Notizen

• Distributed sensor nodes typically operate under the constraint of limited energy source, and power consumption is an important factor to extend the lifetime of sensor systems. Several low-power imagers have been reported for application to wireless sensor networks [1,2]. However, the biggest power consumption comes from wireless signal transmission due to the large bandwidth of image signals [3]. One way to reduce the bandwidth is to generate signals only when an event happens, by monitoring temporal changes [3-5]. However, this event-based imaging has extraneous redundancy because the sensor may also respond to environmental conditions, such as change of illumination or background movement in addition to actual target objects.