Ultra-Shallow DoF Imaging Using Faced Paraboloidal Mirrors
Ultra-Shallow DoF Imaging Using Faced Paraboloidal Mirrors
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DOI：
10.1007/978-3-319-54187-7_8
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发表时间：
2016-11
期刊：
影响因子：
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通讯作者：
R. Nishi;Takahito Aoto;Norihiko Kawai;Tomokazu Sato;Y. Mukaigawa;N. Yokoya
中科院分区：
文献类型：
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作者：
R. Nishi;Takahito Aoto;Norihiko Kawai;Tomokazu Sato;Y. Mukaigawa;N. Yokoya
我们提出了一种新的成像方法，可实现超浅景深 (DoF)，从而清晰地可视化 3D 场景中的特定深度。关键的光学装置由一对面对的抛物面镜组成，其顶点周围有孔。在该设备中，无透镜图像传感器设置在孔的一侧，物体设置在相对侧。该设备的特点是点扩散函数的形状根据目标 3D 点和图像传感器的位置而变化。利用这一特性，我们通过求解涉及位置相关点扩散函数的线性系统来重建特定深度的清晰图像。在实验中，我们使用仿真和实际开发的原型成像系统证明了所提出方法的有效性。
We propose a new imaging method that achieves an ultra-shallow depth of field (DoF) to clearly visualize a particular depth in a 3-D scene. The key optical device consists of a pair of faced paraboloidal mirrors with holes around their vertexes. In the device, a lens-less image sensor is set at one side of their holes and an object is set at the opposite side. The characteristic of the device is that the shape of the point spread function varies depending on both the positions of the target 3-D point and the image sensor. By leveraging this characteristic, we reconstruct a clear image for a particular depth by solving a linear system involving position-dependent point spread functions. In experiments, we demonstrate the effectiveness of the proposed method using both simulation and an actually developed prototype imaging system.