通过控制光场传感器的微位移实现光场超分辨率
Light field super resolution through controlled micro-shifts of light field sensor
摘要：
光场相机通过捕获空间中光线的方向和空间分布来实现新的功能，例如捕获后重新聚焦和光圈控制。基于微透镜阵列的光场相机设计由于其光传输效率、成本效益和紧凑性而通常是优选的。基于微透镜阵列的光场相机的一个缺点是低空间分辨率，这是由于共享单个传感器来捕获空间和角度信息这一事实。为了解决空间分辨率低的问题，我们提出了一种光场成像方法，其中多个光场被捕获并融合以提高空间分辨率。对于每次捕获，使用XY平移台将光场传感器移位微透镜尺寸的预定分数以获得最佳性能。
英文摘要：
Light field cameras enable new capabilities, such as post-capture refocusing and aperture control, through capturing directional and spatial distribution of light rays in space. Micro-lens array based light field camera design is often preferred due to its light transmission efficiency, cost-effectiveness and compactness. One drawback of the micro-lens array based light field cameras is low spatial resolution due to the fact that a single sensor is shared to capture both spatial and angular information. To address the low spatial resolution issue, we present a light field imaging approach, where multiple light fields are captured and fused to improve the spatial resolution. For each capture, the light field sensor is shifted by a pre-determined fraction of a micro-lens size using an XY translation stage for optimal performance.
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