Dynamic Range (DR) is a pivotal characteristic of imaging systems. Current frame-based cameras struggle to achieve high dynamic range imaging due to the conflict between globally uniform exposure and spatially variant scene illumination. In this paper, we propose AsynHDR, a Pixel-Asynchronous HDR imaging system, based on key insights into the challenges in HDR imaging and the unique event-generating mechanism of Dynamic Vision Sensors (DVS). Our proposed AsynHDR system integrates the DVS with a set of LCD panels. The LCD panels modulate the irradiance incident upon the DVS by altering their transparency, thereby triggering the pixel-independent event streams. The HDR image is subsequently decoded from the event streams through our temporal-weighted algorithm. Experiments under standard test platform and several challenging scenes have verified the feasibility of the system in HDR imaging task.

翻译：动态范围是成像系统的关键特性。由于全局统一曝光与空间变化场景光照之间的矛盾，传统帧基相机难以实现高动态范围成像。本文基于对高动态范围成像挑战及动态视觉传感器(DVS)独特事件生成机制的深入理解，提出了一种像素异步高动态范围成像系统AsynHDR。所提出的AsynHDR系统将DVS与一组LCD面板集成，通过调节LCD面板透光率来调制入射到DVS的辐照度，从而触发像素独立的事件流。随后通过我们提出的时域加权算法从事件流中解码出高动态范围图像。在标准测试平台及多个挑战性场景下的实验验证了该系统在高动态范围成像任务中的可行性。