Abstract: With the rapid development of virtual reality, augmented reality, etc., Multi-resolution progressive transmission can provide a good user experience. In order to implement the fast transmission and display of triangular mesh in the mobile terminal, this paper presents a progressive transmission algorithm based on dihedral reverse interpolation Loop subdivision (DRILS). The algorithm mainly uses dihedral interpolation Loop subdivision (DILS) and interpolation Loop subdivision (ILS) algorithm processing. A fine mesh with subdivision connectivity is obtained at the same time as the local feature is accurate. In the process of progressive transmission, three steps are taken for the iterative operation of the accurate triangular mesh: odd and even vertex partition, offset prediction, and triangular mesh prediction. Due to the combination of the DILS and ILS which is used to obtain accurate mesh, the local characteristics of the progressive transmission are accurate, and the speed of progressive transmission is also accelerated. The experimental comparison shows that the algorithm is accurate and efficient, and is suitable for display, transmission and storage of mobile terminal devices.

Key words:  progressive transmission, reverse subdivision, interpolation Loop subdivision, dihedral