论文标题
带隐藏镜头设计的3D场景相机模拟的射线传输功能
Ray-transfer functions for camera simulation of 3D scenes with hidden lens design
论文作者
论文摘要
将图像传感器仿真工具（例如IsetCam）与基于物理的射线跟踪（例如PBRT）相结合，为设计和评估新型成像系统以及合成机器学习的物理准确，标记的图像提供了可能性。一个实际的限制是精确模拟光学器件：镜头制造商通常更喜欢将镜头设计保密。我们使用Zemax中的黑匣子镜头模型为此问题提供了务实的解决方案。这样的模型在保留镜头设计师的知识产权的同时提供了必要的光学信息。首先，我们描述并提供软件来构建多项式射线传递函数，该函数表征了射线如何以任何位置和角度进入镜头的镜头进入镜头。我们将射线传输计算作为PBRT中的摄像机模型实现，并确认PBRT射线转移计算与边缘扩展功能和相对照明的Zemax镜头计算相匹配。
Combining image sensor simulation tools (e.g., ISETCam) with physically based ray tracing (e.g., PBRT) offers possibilities for designing and evaluating novel imaging systems as well as for synthesizing physically accurate, labeled images for machine learning. One practical limitation has been simulating the optics precisely: Lens manufacturers generally prefer to keep lens design confidential. We present a pragmatic solution to this problem using a black box lens model in Zemax; such models provide necessary optical information while preserving the lens designer's intellectual property. First, we describe and provide software to construct a polynomial ray transfer function that characterizes how rays entering the lens at any position and angle subsequently exit the lens. We implement the ray-transfer calculation as a camera model in PBRT and confirm that the PBRT ray-transfer calculations match the Zemax lens calculations for edge spread functions and relative illumination.
