Abstract
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.
Highlights
China is experiencing an unprecedented urbanization process, with the urbanization level increasing from 17.92% in 1978 to 59.58% in 2018 [1]
Details of experiments on the alignment of 2D vector data and video images are presented
Dataset MDXZ contains the scenes of cultivated land in Woodcarving town, while JBWF contains the scenes of Wangfeng community
Summary
China is experiencing an unprecedented urbanization process, with the urbanization level increasing from 17.92% in 1978 to 59.58% in 2018 [1]. With the acceleration of urbanization, the expansion of urban and population growth has led to an increasing demand for cultivated land, resulting in unreasonable land use. Large amounts of farmland have been occupied and converted into other uses, such as residential, industrial, commercial, infrastructure, and institutional uses during the period of urban expansion [2]. As China is a developing country with a large population and scarce land resources, the loss of cultivated land will threaten the security of food supply and the stability of society. In this respect, accurate monitoring of cultivated land plays a crucial role in farmland preservation
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