Huang Zhi, Bai Jian, Hou Xi Yun
State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China.
Opt Express. 2012 Mar 12;20(6):6085-96. doi: 10.1364/OE.20.006085.
A novel panoramic stereo imaging system with double panoramic annular lenses (PAL) is introduced in this paper. The proposed system consists of two coaxial PAL units and images on one sensor. The imaging rings are concentric. The object position can be calculated by triangulation. The novelty of this system is that the central blind zone of one PAL unit is partly used by the other as an image zone. The stereo field of view is 60°~105° × 360°. The depth extracting resolution is about 500 mm at 1line/cm. The F# of the system is about 3, facilitating the system to be applied in low illumination environment. A design is presented and the depth extracting precision is analyzed.
本文介绍了一种新型的具有双全景环形透镜（PAL）的全景立体成像系统。该系统由两个同轴的PAL单元组成，并在一个传感器上成像。成像环是同心的。物体位置可通过三角测量法计算得出。该系统的新颖之处在于，一个PAL单元的中心盲区部分被另一个单元用作图像区域。立体视场为60°~105°×360°。在1线/厘米的情况下，深度提取分辨率约为500毫米。该系统的F#约为3，便于系统应用于低光照环境。文中给出了一种设计方案并分析了深度提取精度。
