Fast camera calibration technology applied to helicopter blades pyramid angle measurement

This paper presents a new method applied to helicopter blades pyramid angle measurement system based on CMOS technology, the overall design scheme of the system is offered and the imaging error is analyzed. Based on similarity criterion, the calculation methods on some critical components parameters of the helicopter dynamic balance test platform model are introduced. Provides a concise and rapid calibration method on the camera intrinsic parameters and the algorithm method is introduced. Design the image processing software based on the filter and edge detecting technology. Finally give the experimental results and tested the measurement system´s accuracy within 1.5 mm.