第一章:引言介紹
Focus:
accurate geometric modeling of real cameras
method:
1.it requires that the camera observes a planar calibration pattern.
2.it's based on a generic camera model that will be shown to be suitable for different kind of omnidirectional(全方位的) cameras as well as for conventional cameras.
第二章:引入一種相機(jī)模型
A.radially symmetric projection model(徑向?qū)ΨQ投影模型)
principal point (主點(diǎn))
focal length(焦距)
r是主點(diǎn)與圖像中二維點(diǎn)之間的距離箕慧,f是焦距,θ是主軸(光軸)與入射光之間的夾角
perspective projection (透視投影):r = ftanθ
stereographic projection (立體投影):r = 2tan(θ/2)
equidistance projection (等距投影):r = fθ
equisolid angle projection (等立體角投影): r = 2fsin(θ/2)
orthogonal projection(正交投影): r = f*sin(θ)
多項(xiàng)式投影:
B.Full Model
distortion term (畸變系數(shù))
徑向方向的系數(shù):
切向方向的系數(shù):
畸變坐標(biāo):
![distorted coordinates](http://upload-images.jianshu.io/upload_images/569253-f643926340733484.png?
imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
ur(?)是頸向方向的單位向量
u?(?)是切向方向的單位向量
(u0,v0)T 是主點(diǎn)
Mu,Mv是水平方向和垂直方向上單位距離的像素點(diǎn)個(gè)數(shù)
第三章:通過將它與其他的模型進(jìn)行對(duì)比進(jìn)行優(yōu)化修正
第四章:介紹估計(jì)相機(jī)參數(shù)的流程
標(biāo)定算法流程:
假設(shè)有N個(gè)視角下的M個(gè)控制點(diǎn)加缘。每個(gè)視角下嫉父,存在著一個(gè)旋轉(zhuǎn)矩陣Rj和一個(gè)平移向量tj直晨,描述了相機(jī)相對(duì)于標(biāo)定平面的位置