2011
DOI: 10.1109/jssc.2010.2085952
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A QVGA 143 dB Dynamic Range Frame-Free PWM Image Sensor With Lossless Pixel-Level Video Compression and Time-Domain CDS

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Cited by 636 publications
(416 citation statements)
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“…This dataset contains 24 samples each from 7 subjects. The event stream is obtained using the ATIS camera [1] with a sensor of 320x240 pixels. The sensor is kept stationary while the subjects move their heads to trace a square path generated on a computer monitor.…”
Section: Results: Object Classificationmentioning
confidence: 99%
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“…This dataset contains 24 samples each from 7 subjects. The event stream is obtained using the ATIS camera [1] with a sensor of 320x240 pixels. The sensor is kept stationary while the subjects move their heads to trace a square path generated on a computer monitor.…”
Section: Results: Object Classificationmentioning
confidence: 99%
“…Event based neuromorphic vision sensors [1][2][3][4] have emerged as a viable replacement to frame based sensors in certain applications. These sensors consist of an array of pixels that detect temporal changes in illumination at that spatial location.…”
Section: Introductionmentioning
confidence: 99%
“…The method allows for planar rigid-body transformations of the target shape and uses a nearest-neighbor strategy to match incoming events to the target shape. Tracking of complex shapes has been recently presented in [14] for the ATIS sensor [2]. The method continuously estimates the geometric transformation between the model and the events representing the object using a gradient descent update.…”
Section: A Event-based Feature Detection and Trackingmentioning
confidence: 99%
“…Recently, bio-inspired silicon retinas [1], [2] have been developed to overcome some of the limitations of framebased cameras. These sensors constitute a paradigm shift since they operate asynchronously, transmitting only the information conveyed by brightness changes in the scene ("events"), at the time they occur with microsecond resolution.…”
Section: Introductionmentioning
confidence: 99%
“…Such predictive ADCs usually involve a pulse modulator, in charge of quantifying in continuous-time the amplitude of the sensor signal at 1 bit, and a digital filter to cut off the high frequency components of the resulting quantification noise and to complete discretization in time. Basically, two different pulse modulation (PM) approaches can be found for the first stage of the ADC: pulse width modulation (PWM) also known as time-to-first-spike [56][57][58][59][60][61][62][63][64], and pulse density modulation (PDM) also called spike-counting [65-68, 62, 69, 70], or even mixed solutions like [71,72]. Each one of these pixel modulation strategies can be performed synchronously by means of traditional frame acquisition times [56,65,[57][58][59][60][61][62] or the more recently introduced event-based approach [63].…”
Section: Fpa Architecturesmentioning
confidence: 99%