摘要
随着数字相机技术的发展,以胶片为主体的机载航空平台逐步向数字化平台发展。本文结合国内最先进的CCD航空数码相机的应用,分析了CCD相机中高空摆扫航摄图像的成像过程、成像模型、图像几何形变与计算。在研究倾斜中心投影成像模型的基础上,提出带有飞行位移的列倾斜中心投影成像模型的系统校正方法,校正了由相机装机倾角和飞机飞行位移所导致的图像几何形变,并通过校正结果图像的拼接验证了系统校正的必要性和有效性。
With the development of digital camera technology, the film-oriented airborne remote sensing platform is developing toward digital imaging platform. With the application of the latest aerial digital camera with CCD as its core in China,we analyse the imaging process, imaging model, geometrical distortion and its computing of digital image by CCD camera of whisk broom model in the middle-high space. According to the research of the imaging model of slantwise central projection, we bring forward the system correction method which is based on the imaging model of slantwise central projection in column with the flight displacement, correct the image geometrical distortion which is resulted from the installing obliquity and the flight displacement, and then test the necessity and the validity of the system correction by verifying the image mosaics.
出处
《地球信息科学》
CSCD
2007年第5期105-109,共5页
Geo-information Science
关键词
CCD相机
摆扫
系统校正
拼接
CCD camera
whisk broom
system correction
mosaic
