Helicopter blades pyramid angle measurement based on panoramic vision technology

Helicopter plays an important role in the national defense industry. Helicopter blades pyramid angle is key test item in aircraft test technology. According to the previous rotor blades measurement methods, this paper proposes a new method based on panoramic vision technology. A group of inverse projection equations derived from panoramic spherical reductive algorithm for calculation of the blades height differences. The target blade real-time extraction was realized by using synchronization circuit to control the camera and the corresponding solving method on the panoramic image was studied. Image first segment adopted the pulse coupled neural network(PCNN) algorithm. The experimental results show that this method has higher accuracy and suitable for rotor blades pyramid measurement system and can be used in the future actual production process.