Research on the Methods of Panoramic Video Projection Mapping

In recent years, panoramic video has gradually emerged in the multimedia industry. As an important part of the panoramic video processing process, the choice of projection mapping method will affect the efficiency of panoramic video coding and decoding, transmission mode and user experience. There have been a lot of researches on the projection method from the spherical surface to the plane, and its important purpose is to reduce the distortion of the spherical video in the projection and improve the performance of panoramic video encoding. At present, projection methods are mainly divided into uniform quality projection and non-uniform quality projection. This paper compares several common projection mapping methods, discusses their respective advantages and disadvantages, and makes related summary at last.