Posture measurement for the aircraft model based on the monocular-vision system

To solve the posture measuring problems of aircraft model in the wind tunnel tests, a kind of method based on the monocular vision has been put forward in this paper, making use of a few geometric information of marking points and its corresponding image information according to the projective geometry, so that the relative object posture can be calculated. This method combines the advantages of analytic algorithm and nonlinear algorithm, and uses the constraints between frame and the follow-up frame to optimize the posture, reducing calculation steps but not decreasing its accuracy. A good result has been gotten in the actual test.