鱼眼相机相关概念

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conical mirror 圆锥反射面

omnidirectional camera 可以在同一时间看到相机四周所有方向的物体 360度 视野

catadioptric image formation: using mirrors in combination with conventional imaging systems
反射折射成像系统: 传统成像系统结合反射面的成像系统,这个反射面可以有很多种形式

Dioptrics is the science of refracting elements (lenses)
折射光学是一门关于 折射元器件的科学

catoptrics is the science of reflecting surfaces (mirrors)
反射光学是一门关于 反射面的科学(反光镜)

catadioptrics = refracting elements + reflecting elements

A Unifying Theory for Central Panoramic Systems and Practical Implications
ECCV 2000

广角相机模型方面的文献

Omnidirectional or panoramic visual sensors : hemi-spherical field of view 具有半球视野的摄像头传感器

panoramic field of view 全景视野

central panoramic systems: a class of omnidirectional sensors 中心全景成像系统属于广角传感器中的一种
central panoramic systems: all catadioptric systems with a unique effective viewpoint

Omnidirectional sensing 有两种实现方式: dioptric or catadioptric systems 折射系统、反折射系统

Dioptric systems consist of fish-eye lenses 基于鱼眼镜头的折射系统

catadioptric systems are combinations of mirrors and lenses 基于镜面和镜头组合的反折射系统

mirror surface—parabolic, hyperbolic, elliptic, planar 反射面类型
appropriate lens—orthographic or perspective 镜头类型

Can We Consider Central Catadioptric Cameras and Fisheye Cameras within a Unified Imaging Model
ECCV 2004

常用的两类 omnidirectional cameras: central catadioptric cameras 和 fisheye cameras

A catadioptric camera is an imaging device which combines a pinhole and a reflective mirror
反射相机=小孔相机+反射镜面

A catadioptric camera with a single viewpoint is called central catadioptric camera
central catadioptric camera : 具有一个 viewpoint 的 反射相机

A fisheye camera is an imaging device which mounts a fisheye lens on a conventional camera
fisheye camera : 使用鱼眼镜头的普通相机
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普通相机成像遵循的是针孔相机模型,在成像过程中实际场景中的直线仍被投影为图像平面上的直线。但是鱼眼相机如果按照针孔相机模型成像的话,投影图像会变得非常大,当相机视场角达到180°时,图像甚至会变为无穷大。所以,鱼眼相机的投影模型为了将尽可能大的场景投影到有限的图像平面内,允许了相机畸变的存在。并且由于鱼眼相机的径向畸变非常严重,所以鱼眼相机主要的是考虑径向畸变,而忽略其余类型的畸变

作者:sylvester0510
来源:CSDN
原文:https://blog.csdn.net/u010128736/article/details/52864024
版权声明:本文为博主原创文章,转载请附上博文链接!

鱼眼相机:如何将大场景视野投影到有限的图像平面内

A Generic Camera Model and Calibration Method for Conventional, Wide-Angle, and Fish-Eye Lenses

pinhole camera fish-eye camera
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