2011-02-28 72 views
0

我有巫术摄像机跟踪软件,进行视频作为输入,并以下列格式给出输出继电器:如何使用voodoo相机跟踪器?

# Text export 
# created by voodoo camera tracker - www.digilab.uni-hannover.de 
# Creation date: Mon Feb 28 18:41:56 2011 
# The camera (one line per frame) 
# 
# Description of the CAHV camera model: 
# ------------- 
# (Cx, Cy, Cz) : CameraPosition [mm] 
# (Ax, Ay, Az) : RotationAxis2 [unit vector] 
# (Hx, Hy, Hz) : RotationAxis0 [pel] (including FocalLength, PixelSizeX, and Principal Point offset) 
# (Vx, Vy, Vz) : RotationAxis1 [pel] (including FocalLength, PixelSizeY, and Principal Point offset) 
# (K3, K5)  : Radialdistortion; K3 [1/(mm)^2] K5 [1/(mm)^4] 
# (sx, sy)  : PixelSize [mm/pel] 
# (Width, Height) : ImageSize [pel] 
# ------------- 
# (ppx, ppy)  : Principal Point offset [pel] 
# f    : Focal Length [mm] 
# fov    : Horizontal Field of View [degree] = (2*atan(0.5*Width*sx/f)*180/PI; 
# (H0x, H0y, H0z) : RotationAxis0 [unit vector] 
# (V0x, V0y, V0z) : RotationAxis1 [unit vector] 
# ------------- 
# (x, y)   : image coordinates [pel] 
# (X, Y, Z)  : 3D coordinates [mm] 
# ------------- 
# Projection of 3D coordinates in the camera image: 
# [ x' ] = [ Hx Hy Hz ] [ 1 0 0 -Cx] [ X ] 
# [ y' ] = [ Vx Vy Vz ] [ 0 1 0 -Cy] [ Y ] 
# [ z' ] = [ Ax Ay Az ] [ 0 0 1 -Cz] [ Z ] 
#          [ 1 ] 
# or 
# [ x' ] = [f/sx 0 ppx] [ H0x H0y H0z ] [ 1 0 0 -Cx] [ X ] 
# [ y' ] = [0 f/sy ppy] [ V0x V0y V0z ] [ 0 1 0 -Cy] [ Y ] 
# [ z' ] = [0 0 1 ] [ Ax Ay Az ] [ 0 0 1 -Cz] [ Z ] 
#               [ 1 ] 
# then x = x'/z' and y = y'/z' , if the origin of the image coordinates is in the center of the image 
# or x = x'/z' + 0.5*(Width-1) and y = y'/z' + 0.5*(Height-1) , if the origin of the image coordinates is in the upper left corner 
# ------------- 
# Cx Cy Cz Ax Ay Az Hx Hy Hz Vx Vy Vz K3 K5 sx sy Width Height ppx ppy f fov H0x H0y H0z V0x V0y V0z 

现在,这是一个CAHV相机模型,给出了值每帧。我想知道如何从这个输出中提取像翻译,旋转,缩放等摄像机参数? 在此先感谢..

回答

0

This link gives us the details how to use the tracker.

正如你所看到的,最后一步导出估计摄像机参数的3D动画包说::。所以我导出到Maya脚本文件中,然后使用Notepad ++打开文件,其中给出了有关每个帧的相机参数的详细信息。