基于航拍图像的上海市农业用地影像特征分析

Visual interpretation and image feature analysis is an important basis of automatic interpretation in the agricultural remote sensing. Especially due to the inherent characteristics of the aerial images and management requirements of urban agricultural land and the particularity of agricultural land classification of Shanghai city, automatic interpretation technology based on high-definition aerial image is still immature. Therefore, this article discusses the data sources on the basis of air photos in different time, we use the principle of traditional visual interpretation and operate on the platform of independent WebGIS system, the difficult point in visual interpretation based on aerial images were summarized and analyzed after several field survey and expert panel discussion. The results provide a reference for the research of the automatic interpretation of agricultural land in the later period of Shanghai city