In the light of characteristics of some building shadow outlines in high resolution images, the authors

put forward a new method for measuring the shadow width based on the Curvature Scale Space (CSS) method. This

semiautomatic method first computes the shortest distance between corners, then performs length and angle

filtering, and finally calculates statistical averages. The campus of Beijing Normal University was chosen as the

test field. The result demonstrates that this method can make up such drawbacks in the manual work of shadow width

measurement as the cumbersome process and low efficiency and at the same time effectively improve the calculation

precision.