An Interactive Superposition Technology for High Frame Virtual Image

In the process of optoelectronic theodolite real-time interactive simulation,the high frame virtual image distortion can't be avoided because of the limit of hardware process capability.An interactive superposition algorithm is proposed for virtual image based on comparability theory.In the process of real-time simulation,the target image which was simulated beforehand can be superposed on the background image which was also simulated beforehand,after rotating and translating.This operation can ensure the interactive character of simulation,at the same time,the romance quality of virtual image can be improved highly.Guided by perspective projection model,an algorithm is given to calculate translation amount and rotating amount.Simulation results show that the superposition image has the same character with the actual simulation image.