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Light-field image acquisition from a conventional camera: design of a four minilens ring device

机译：从传统相机获取光场图像：四个微型镜头环设备的设计

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摘要

In the past few years, a new type of camera has been emerging on the market: a digital camera capable of capturing both the intensity of the light emanating from a scene and the direction of the light rays. This camera technology called a light-field camera uses an array of lenses placed in front of a single image sensor, or simply, an array of cameras attached together. An optical device is proposed: a four minilens ring that is inserted between the lens and the image sensor of a digital camera. This device prototype is able to convert a regular digital camera into a light-field camera as it makes it possible to record four subaperture images of the scene. It is a compact and cost-effective solution to perform both postcapture refocusing and depth estimation. The minilens ring makes also the plenoptic camera versatile; it is possible to adjust the parameters of the ring so as to reduce or increase the size of the projected image. Together with the proof of concept of this device, we propose a method to estimate the positions of each optical component depending on the observed scene (object size and distance) and the optics parameters. Real-world results are presented to validate our device prototype.
机译：在过去的几年中，市场上出现了一种新型的照相机：一种数字照相机，它既可以捕获场景发出的光的强度又可以捕获光线的方向。这种称为光场相机的相机技术使用一个镜头阵列放置在单个图像传感器的前面，或者简单地说，是将一系列镜头安装在一起。提出了一种光学装置：在透镜和数码相机的图像传感器之间插入四个微型透镜环。该设备原型能够将常规的数码相机转换为光场相机，因为它可以记录场景的四个子孔径图像。这是一种既紧凑又经济高效的解决方案，可以同时执行捕获后重新聚焦和深度估计。微型镜头环也使全光摄像机通用。可以调整环的参数，以减小或增大投影图像的大小。连同该设备的概念证明一起，我们提出了一种根据观察到的场景（物体大小和距离）和光学参数估算每个光学组件位置的方法。给出了实际结果以验证我们的设备原型。

著录项

  • 来源
    《Optical engineering》 |2019年第1期|015105.1-015105.9|共9页
  • 作者

    Stephane Bazeille; Yvan Maillot; Frederic Cordier; Cecile Riou; Christophe Cudel;

  • 作者单位

    Institute IRIMAS-Universite Haute-Alsace, Mulhouse Cedex, France;

    Institute IRIMAS-Universite Haute-Alsace, Mulhouse Cedex, France;

    Institute IRIMAS-Universite Haute-Alsace, Mulhouse Cedex, France;

    Institute IRIMAS-Universite Haute-Alsace, Mulhouse Cedex, France;

    Institute IRIMAS-Universite Haute-Alsace, Mulhouse Cedex, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    optics; light field; camera;

    机译：光学;光场相机;

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