Landscape Evaluation From Low-altitude Perspective Based On Uav Aerial Photography

With the gradual opening of China's low-altitude airspace and the promulgation of the policies for the various low-altitude tourism development in the “13th Five-Year Plan”,low-altitude tourism will become a new kind of tourism industry and inject new vitality into the tourism market.Sightseeing is an important part of tourism.In order to build a low-altitude tourism base and set up a tourist flight route,aerial viewing is an important consideration.In order to improve the low-altitude tourism experience and assist the selection and creation of low-altitude tourism landscape,landscape evaluation from the aerial perspective is a very valuable research topic.Based on the development policy of low-altitude tourism in Sichuan and the characteristics of topography and landscape in Sichuan,this thesis selects Yunhu National Forest Park,Jiangan Village in Pidu District and Lianhua Mountain in Pengzhou City as sampling sites.Meanwhile,it comprehensively uses landscape aesthetics and landscape ecology theory.The UAV aerial photography was used to simulate the aerial view.46 valid questionnaire data are obtained by literature research,field investigation,questionnaire survey,semantic difference analysis,the correlation analysis,difference analysis,and so on.Combined with factor analysis,the landscape characteristics of three sampling sites were evaluated.By means of semantic difference analysis,for three sampling sites,27 samples collected from three shooting angles were used for landscape evaluation.The comprehensive evaluation value of the samples was obtained,and the comprehensive evaluation curve and the statistical comparison table of the sample score were drawn.According to the statistical results of the data,the results of the landscape evaluation was carried out according to the statistical results.Correlation analysis and difference analysis were used to analyze and compare the evaluation data in the form of population,grouping and single sample.Then using the method of factor analysis SPSS software was used to analyze and classify the evaluation indexes of landscape characteristics.Four kinds of factors such as sensory factor,atmosphere factor,environmental factor and spatial factor were obtained.Furthermore,through the comparison of the evaluation value of different factors,the specific evaluation of the landscape characteristics was obtained in every landscape.The research has shown that there are obvious differences between the aerial viewing and the ground viewing.The visual angle has a significant impact on the presentation of the landscape characteristics.There is an inherent correlation between the landscape features and the landscape features.The richness of color,the regular shape of scenery and thedistribution of color lines play a key role in the beauty and attraction of the landscape.