Study on the positioning of forestry insect pest based on DEM and digital monitoring technique

Authors:
Feifei Zhao;Yanyou Qiao
Affiliations:
Institute of Remote Sensing and Applications, Chinese Academy of Sciences, Beijing, China;Institute of Remote Sensing and Applications, Chinese Academy of Sciences, Beijing, China
Venue:
ICICA'11 Proceedings of the Second international conference on Information Computing and Applications
Year:
2011

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Abstract

Forests are extremely important natural resources of terrestrial ecosystem. However, forestry pests and diseases always cause prodigious loss. To protect forestry resources effectively and find diseases and pests as soon as possible, advanced digital PTZ (Pan/Tile/Zoom) and video camera were adopted. According to the azimuth angle and pitch angle returned from the digital PTZ in real time, with the classical Bresenham algorithm extended to three-dimensional space, a radial in this direction was obtained. And then, combining the geographic spatial information supplied by DEM (Digital Elevation Model), the forestry diseases and pests could be positioned through searching along this direction. This method can position the area of forestry disasters effectively and rapidly, which is beneficial to realize the sustainable development of forest resources.