Abstract:A single-view vision metrology with range controls is used in displacement measurement of highway landslide and cutting slope model experiment instead of commonly used physical or mechanical methods. It applies non-metric digital camera as the main tool,and only needs some distances of data points instead of coordinate controls on model plane. The homography between model plane and image plane can be recovered by the constrained least-square adjustment,which avoids the dependence on particular geodetic instruments such as theodolites or electronic total stations. The camera is placed perpendicularly to the object plane,and interior and exterior parameters are fixed during experimental period to capture one ortho-image of the model plane at each epoch. Then,the displacement field can be acquired through the post processing of the captured image sequences by the procedures of target accurate measurement,homography matrix calibration,the lens distortions and rigid body transformation displacement elimination. The results indicate that the approach is more convenient and with higher precision,which can be used in engineering applications with accuracy requirement less than 1 mm.