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A 240×180 130dB 3us Latency Global Shutter Spatiotemporal Vision Sensor

Publication date:

Authors:

  • Accepted in: IEEE Journal of Solid-State Circuits
  • Publication date: 2014

Event-based dynamic vision sensors (DVSs) asynchronously report log intensity changes. Their high dynamic range, sub-ms latency and sparse output make them useful in applications such as robotics and real-time tracking. However they discard absolute intensity information which is useful for object recognition and classification. This paper presents a dynamic and active pixel vision sensor (DAVIS) which addresses this deficiency by outputting asynchronous DVS events and synchronous global shutter frames concurrently. The active pixel sensor (APS) circuits and the DVS circuits within a pixel share a single photodiode. Measurements from a 240×180 sensor array of 18.5um^2 pixels fabricated in a 0.18um 6M1P CMOS image sensor (CIS) technology show a dynamic range of 130dB with 11% contrast detection threshold, minimum 3us latency, and 3.5% contrast matching for the DVS pathway; and a 51dB dynamic range with 0.5% FPN for the APS readout.

    Reference

    • Detailed record: https://infoscience.epfl.ch/record/200837?ln=en
    • EPFL-ARTICLE-200837
    Reference
    Read the paper
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