关键词: 灾害估计, 航空摄影, 精度估算

Abstract: Statistics of the size of the major earth quake disastrous targets in the past 30 years and the probabilities of targets in different size were conducted.The probabilities of interpreting the dis-astrous targets from different scale of aerial photograph were made on the basis of the visual in-terpretation. In order to meet the need of the disastrous investigation and lose estimation,the in-troduced scales of aerial photograph for the investigation in urban,countryside and rural areas are 1:10000,1:20000 and 1:30000 respectively,which should be adjusted by local terrain condition and the economic development.The error sources in the investigation by aerial photogropy were discussed,and the accuracy for major disastrous targets is more than 80%.

Key words: Precision estimation, Hazard evaluation, Aerial photograpy