基于视觉图像特征的公路景观绿化美景度评价

通过对大量公路景观图像的研究，运用心理物理模式中的SBE方法对景观图像进行了总体评价，同时提取了图像特征信息；运用数理统计中的多元回归、相关分析和聚类等方法建立了关联模型，分析了人类视觉特性和公路景观总体评价值之间的关系．研究结果表明：跨线桥对公路景观影响最为显著，中央分隔带绿化对美景度值无显著性影响，两侧绿化面积比在17．2之间最为适宜，高美景度景观的图像主色彩（蓝、灰、绿）比例宜为3：4：3．

Scenic beauty estimation(SBE) evaluation of highway landscape greening based on characteristics of visual pictures

On the basis of many highway landscape pictures, the SBE method of psychophysical mode is used to give an overall assessment , and picture characteristics are picked up. Then a correlation model is built up using multiple regression, correlation analysis and cluster method. At last, the relationship between human vision and highway landscape is summarized. The result of shows that the impact of flyover is the most prominent factor while the median greening has no significant effect , and among beautiful landscape pictures, the feasible greening ratio of two sides should be between 1 and 2, the feasible proportion of main colors （blue, grey, green ） should be 3： 4： 3.