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Runway is the most significant sign of airport because of its obvious line and edge features, so traditional methods always use the Hough transform to accomplish the detection. Given the problems that Hough transform needs to consider a lot of factors which spends a lot of time, and there are any breakpoints in results, an improved algorithm based on Hough transform is proposed. First, using the idea...
The increase of agricultural land abandonment is one of the main changes in land use in China over the recent years. In China, the abandonment phenomenon has become one of the most serious problems in the last 20 years. Abandoned farmlands make the land in a vicious circle. Preventing the farmland from abandonment is an urgent issue for China. Thus, abandoned farmland survey is very important; it...
This study aims to develop a quantitative approach for evaluating the quality of a LiDAR point cloud registration solution. First, a highly-efficient technique for integrating multiple LiDAR point clouds was introduced using directly the in-situ conjugate features (including point, linear, planar features and groups of points). Then by applying the Non-Iterative Solutions for Linear Transformations...
A novel approach for aligning multistation unregistered Light Detection and Ranging (LiDAR) point clouds is presented in this letter. It is designed to find the rigid rotations and translations between two data sets using hybrid conjugate features, including points, lines, planes, and groups of points. In addition, the proposed solution is expressed in a closed form, meaning that neither an initial...
In this paper, an integrated algorithm to detect bridge objects over rivers was introduced for satellite imagery interpretation. It is composed of two steps: first, segment the river from complex background using data driven strategy; second, detect the bridges in the shrink searching area using knowledge driven strategy. Considering the ubiety of the bridges and the surroundings, this paper focused...
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