Journal
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
Volume 9, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/ijgi9070448
Keywords
digital orthophoto map (DOM); cultivated land protection; video GIS; basic farmland protection zones (BFPZs)
Funding
- National Key Research and Development Program of China [2018YFB0505401]
- Ministry of Natural Resources of China [4201-240100123]
- National Natural Science Foundation of China [41771452, 41771454, 41890820, 41901340]
- Natural Science Fund of Hubei Province in China [2018CFA007]
- Open Fund of Key Laboratory of Urban Land Resources Monitoring and Simulation, Ministry of Natural Resources [KF-2019-04-048]
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The integration of intelligent video surveillance and GIS (geograhical information system) data provides a new opportunity for monitoring and protecting cultivated land. For a GIS-based video monitoring system, the prerequisite is to align the GIS data with video image. However, existing methods or systems have their own shortcomings when implemented in monitoring cultivated land. To address this problem, this paper aims to propose an accurate matching method for projecting vector data into surveillance video, considering the topographic characteristics of cultivated land in plain area. Once an adequate number of control points are identified from 2D (two-dimensional) GIS data and the selected reference video image, the alignment of 2D GIS data and PTZ (pan-tilt-zoom) video frames can be realized by automatic feature matching method. Based on the alignment results, we can easily identify the occurrence of farmland destruction by visually inspecting the image content covering the 2D vector area. Furthermore, a prototype of intelligent surveillance video system for cultivated land is constructed and several experiments are conducted to validate the proposed approach. Experimental results show that the proposed alignment methods can achieve a high accuracy and satisfy the requirements of cultivated land monitoring.
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