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Photogrammetry has recently seen a rapid increase in many applications, thanks to developments in computing power and algorithms. Furthermore with the democratisation of UAVs (Unmanned Aerial Vehicles...
In the recent years, the performance of LiDAR systems was improved by acquisition of the terrain surface with steadily increasing point densities. However, the main error sources affecting the quali...
The national western spatial data quality check method based on entity and evaluation method based on the cloud theory and rough set have been put forward according to the National Western Surveying a...
The establishment of the Croatian National Spatial Data Infrastructure has started at the beginning of the 1990's. The main agitator of the activities was the State Geodetic Administration of the Repu...
The paper demonstrates modified cross-correlation methods to detect height errors of DTM points based on stereo-pairs of aerial images. The usual cross-correlation method is extended using dynamic dim...
Quick data acquisition using LiDAR, is a way to generate dense accurate DEM. The difference with an image recorded by a standard digital camera is that the LiDAR recorded points do not have a regular ...
The purpose of filtering LIDAR data is to extract the laser points which are truly reflected from the bare ground. However, the results obtained may vary since several engineers are involved in the ma...
The improving capability of the direct geo-referencing technology is having a positive impact on the widespread adoption of LiDAR systems for the acquisition of dense and accurate surface models over ...
The heart of any spatial systems is its strong reliable database. The spatial database is a complex in nature which requires special technical skills to maintain it. The discrepancies in database can ...
In terms of research dealing with acceleration of technological and measuring processes during operating earth moving machines, a technological procedure of operating quality control of machines by me...
The Poyang Lake is the largest fresh water lake in China, of which the vast area is about 39955 km2 . The Poyang Lake Area, on the other hand, is the place where floods often occur. In order to redu...
Digital spatial data are underlying strong temporal changes. The typical approach of updating these changes is to check the data manually by superimposing them on up-to-date orthoimages from aerial or...
Within the frame of the European Harmonization Program of the Ministry of Agriculture and Rural Development, three nation-wide connected projects were launched by F諱I in 2000 to be carried out during...
This paper discusses a quality control system developed to be applied to the digital photogrammetric process for Brazilian spatial data production. The developed quality control system is directed to ...

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