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Abstract

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Vibrating Makes for Better Seeing: From the Fly’s Micro-Eye Movements to Hyperacute Visual Sensors

“…This was followed by the development of another micro-scanning visual sensor (Viollet and Franceschini, 1999a), which enabled a small aerial robot to locate a moving target, fixate it, and follow it smoothly (Viollet and Franceschini, 1999b, 2001). Several attempts (see Figures 4A–C) have been made to develop bio-inspired scanning sensors based on vibrating optic fibers (Mura and Shimoyama, 1998), a compound eye structure (Hoshino et al, 2000, 2001), passive structure (Landolt and Mitros, 2001), an actuated mirror (Landolt and Mitros, 2001), and even a tiny eccentric mechanism (Juston and Viollet, 2012). In these studies, an active visual process was mainly used to improve the detection of slowly moving targets.…”

“…(B) A visual scanning sensor inspired by the spiders retinal movements. The passive scanning movements were powered here by environmental vibrations applied to the device (Landolt and Mitros, 2001). (C) Bio-inspired hyperacute vibrating eye composed of 6 pixels placed behind a fixed lens.…”

“…A pulsed-scanning mode was found to help a mobile robot detect the simple presence of edges in its visual field (Mura and Shimoyama, 1998). A circular micro-scanning mode was developed to improve the spatial resolution by transforming spatial information into temporal information (Landolt and Mitros, 2001). This same mode was also used to obtain line or edge operators by correlating a modulating signal with the output signals emitted by a 2-D imager (Ando, 1988).…”

Insect Inspired Visual Motion Sensing and Flying Robots

“…42 In Ref. [67], a new approach to visual sensing for machine vision purposes has been described, which relies on mechanical vibrations in the optical path to turn image features into temporal signals. An integrated circuit implementing a visual sensor taking advantage of this principle has been designed and fabricated (see Fig.…”

“…55 A circular microscanning mode was developed to improve the spatial resolution by transforming spatial information into temporal information. 67 This same mode was also used to obtain line or edge operators by correlating a modulating signal with the output signals emitted by a 2D imager. 161 In humans, it has been established in theoretical studies that ocular micro-movements (tremor) can provide hyperacuity.…”