标题: 利用参考模型校正车用镜头之影像转换方法与相关装置之应用
Calibration of vehicle camera based on reference pattern for image conversion and it's device applications
作者: 李韶元
陈耀宗
Lee, Shao-yuan
Chen, Yaw-Chung
网路工程研究所
关键字: 车用镜头校正;自动化校正;车辆安全辅助系统;Calibration pattern;camera Calibration;vehicle camera;vehicle secure support system
公开日期: 2017
摘要: 本文主要提出一种车用镜头的自动化校正与应用其的影像转换方法与装置。该方法包括:校正参考图像的影像提取。辨识该校正参考图像的多个第一与第二特征图像。求出这些第一与第二特征图像在该第一视角座标系的各别座标,以及这些第一与第二特征图像在该第二视角座标系的各别座标,以求出该第一与该第二视角座标系间的座标对应关系。根据该座标对应关系,将输入影像转换成输出影像。
现已有许多技术来辅助行车安全。一般来说,这些车辆安全辅助系统(全周监视系统、前方防碰撞警示系统、后方安全辅助系统、侧方盲点警示系统等)通常都具有车用镜头,其用以提取车外影像。在出厂之前,安装于车辆的车用镜头得要先经过校正。
以目前来看,传统的车用镜头人机校正方法需仰赖校正人员手动微调,使得影像中的特征图像能符合预设条件,以通过人机操作将影像调整至正确位置。之后,系统计算镜头外部参数(extrinsic parameters)与内部参数(intrinsic parameters)以进行座标转换。本论文提出一种车用镜头校正参考图像、车用镜头校正参考图像的设置方法、及应用其的影像转换方法与装置,自动化地校正车用镜头。
The purpose of this thesis is to apply the method that can automatically correct the car camera by using reference image. The method includes : extract image by correcting reference image . Identify multiple first and second characteristic image in reference image, and get the coordinates that is first perspective and secondperspective, and analysis the relationship between them . According to the relationship , transform the input image to output image.

In today , have a lot of technology to support car security , in general , these car secure support system (multi view camera system , front crash alarm system , back secure support system , side blind alarm system …) should have a car camera , use the camera to get the car outside image, before the car sale , the camera installed in car should be correct first .

At present , traditional man-machine car camera correct method should depends on manual adjustment , ensure the image characteristic image can fit the default condition by using the man-machine operate to adjust to the right position. And the system compute the camera extrinsic parameters and intrinsic parameters to transform the coordinates. This thesis apply the method that automatically correct car camera by using reference image.
URI: http://etd.lib.nctu.edu.tw/cdrfb3/record/nctu/#GT070056502
http://hdl.handle.net/11536/142967
显示于类别:Thesis