title: Event-Based Tone Mapping for Asynchronous Time-Based Image Sensor.
abstract: The asynchronous time-based neuromorphic image sensor ATIS is an array of autonomously operating pixels able to encode luminance information with an exceptionally high dynamic range (>143 dB). This paper introduces an event-based methodology to display data from this type of event-based imagers, taking into account the large dynamic range and high temporal accuracy that go beyond available mainstream display technologies. We introduce an event-based tone mapping methodology for asynchronously acquired time encoded gray-level data. A global and a local tone mapping operator are proposed. Both are designed to operate on a stream of incoming events rather than on time frame windows. Experimental results on real outdoor scenes are presented to evaluate the performance of the tone mapping operators in terms of quality, temporal stability, adaptation capability, and computational time.
authors.affiliation: Pixium Vision Paris, France.
authors.forename: Camille
authors.initials: C
authors.lastname: Simon Chane
authors.affiliation: Institut National de la Santé et de la Recherche Médicale UMRI S 968, Sorbonne Universités, UPMC Univ Paris 06, UMR S 968, Centre National de la Recherche Scientifique, UMR 7210, Institut de la Vision Paris, France.
authors.forename: Sio-Hoi
authors.initials: SH
authors.lastname: Ieng
authors.affiliation: Institut National de la Santé et de la Recherche Médicale UMRI S 968, Sorbonne Universités, UPMC Univ Paris 06, UMR S 968, Centre National de la Recherche Scientifique, UMR 7210, Institut de la Vision Paris, France.
authors.forename: Christoph
authors.initials: C
authors.lastname: Posch
authors.affiliation: Institut National de la Santé et de la Recherche Médicale UMRI S 968, Sorbonne Universités, UPMC Univ Paris 06, UMR S 968, Centre National de la Recherche Scientifique, UMR 7210, Institut de la Vision Paris, France.
authors.forename: Ryad B
authors.initials: RB
authors.lastname: Benosman
keywords: AER; HDR imaging; neuromorphic vision; silicon retina; tone mapping