Research on the Detection Method of Landing Sign for Unmanned Helicopter Based on Vision

For the detection problem of landing sign in the process of unmanned helicopter landing on ship, a kind of landing sign was designed according to the ship environment firstly, and then the corresponding processing were carried out for the designed sign, including segmentation based on color, image sampling and quantization, noise filtering, and the contour extraction, etc. For the special environment of naval ships, a variety of image processing method was used to comparative analysis, a landing sign detection method was proposed on the basis of a large number of experiments, the target image with good effect was obtained finally, which show that the method have important practical significance and engineering practical value.