Feedback control of event cameras

Feedback control of event cameras
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事件摄像机的反馈控制

DOI:
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发表时间:
2021
期刊:
2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
影响因子:
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通讯作者:
M. Paluch
M. Paluch
中科院分区:
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文献类型:
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作者:
T. Delbrück;Rui Graça;M. Paluch

文献摘要

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动态视觉传感器事件相机产生亮度变化事件的可变数据速率流。像素级的事件产生由阈值、带宽和不应期偏置电流参数设置控制。必须调整偏置以匹配应用要求,最佳设置取决于许多因素。作为自动控制偏差的第一步,本文提出了固定步长的反馈控制器,使用事件率和噪声的测量。控制器使用阈值和不应期控制将事件率调节在可接受的范围内,并且使用带宽控制来调节噪声。实验证明了模型的有效性和反馈控制。
Dynamic vision sensor event cameras produce a variable data rate stream of brightness change events. Event production at the pixel level is controlled by threshold, bandwidth, and refractory period bias current parameter settings. Biases must be adjusted to match application requirements and the optimal settings depend on many factors. As a first step towards automatic control of biases, this paper proposes fixed-step feedback controllers that use measurements of event rate and noise. The controllers regulate the event rate within an acceptable range using threshold and refractory period control, and regulate noise using bandwidth control. Experiments demonstrate model validity and feedback control.