The problem of time and memory is the key to real-time system.The methods of merging vertexes and hashing map can improve speed and reduce memory.

• 系统针对阻碍实时性的三维重建时空问题,采用顶点合并和哈希映射方法对三角形网格进行优化,有效减少了重建后图像的存储量并提高了显示速度。