一种新的真正射影像生成算法

基金项目: 国家863计划资助项目(2007AA120203)；国家自然科学基金资助项目(40671159)

详细信息

A New Method for True Orthophoto Generation

¹State Key Laboratory for Information Engineering in Surveying,Mapping and Remote Sensing, Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家863计划资助项目(2007AA120203)；国家自然科学基金资助项目(40671159)

摘要: 针对传统正射影像上由于建筑物对周围地物遮挡造成的建筑物倾斜、重影等问题,提出了一种新的遮蔽检测方法,并利用昆明城市地区彩色航空影像分别对该方法和其他两种算法进行了对比,结果表明,本算法的检测结果准确可靠。另外,利用相邻影像重叠信息对遮蔽区域进行了像素补偿,生成了较为完整的真正射影像。
- 遮蔽检测 /
- 高程面投影 /
- 迭代 /
- 像素补偿
Abstract: This paper proposed a new occlusion detection method for the true orthophoto generation that the primary problem is converted to computing the intersection points of the rays and horizontal planes by the rasterizing and iterating strategy.A moving horizontal plane is also applied to a completed detection,which includes examining the occlusions caused by the buildings' hiding each other.The experiments with the color aerial image data of the Kunming city shows that comparing with other two representative methods,this method can obtain more accurate results,and meanwhile the efficiency is satisfied.Additionally,the neighboring images are used for occlusion compensation,and finally the true orthophoto is generated.
- occlusion detection /
- projection to the plane /
- iteration /
- pixel compensation