“In the field of 3D display technology, researchers have proposed a depth optimization method based on 3D point clouds, which effectively solves the problem of insufficient depth range in naked eye grating 3D displays. By adjusting the depth position, the overall compression of the scene depth is achieved while maintaining the geometric structure of the scene subject unchanged. Multiple statistical experiments have shown that this method can significantly enhance the subjective experience of the audience, allowing them to watch 3D scenes without feeling unnatural and retaining a strong sense of depth perception towards the scene subjects.”