Projection equipment automatic obstacle avoidance method and system based on structured light coding

The invention provides a method and a system for automatic obstacle avoidance of projection equipment based on structured light coding. The method comprises the following steps: projecting a coded phase-shift sine structured light pattern to a projection area; capturing a sine pattern containing projection area information; calculating phase and depth information of the projection area to complete three-dimensional reconstruction; judging whether the projection plane has an obstacle, and selecting an optimal projection plane; and adjusting the projection to an optimal projection plane. The invention provides an automatic obstacle avoidance method and system for projection equipment based on structured light coding, and the method can effectively avoid the problems of obstacle detection failure, small projection area and the like through a projection module, a camera module, a processing module and an adjustment module, and completes the automatic obstacle avoidance of the projection equipment and the selectio