体三维显示中像素均匀性优化的参数选取

摘要

针对LED旋转屏体三维显示中,体像素在水平方向呈现"外疏内密"的非均匀分布的问题,提出一种均匀性优化的改进方法.将预设的点阵模板加载于体像素分布图中,为每个模板点保留与它距离最近的体像素,使体像素的分布近似于点阵模板.优化中,以模板点和离它最近的体像素间的平均距离、最大距离衡量优化效果,结合系统对优化效果的要求以及二维截面数和LED列间距的限制关系来计算满足条件的截面数和列间距,最终选取LED用量最小的列间距及对应的截面数.%In the volumetric 3D system based on rotating LED panel, voxels present an uneven distribution of being dense inside and sparse outside in the horizontal position.An improved method for uniformity optimization is proposed in this paper, which includes loading a default dot matrix template in the voxels' distribution picture and preserving voxels nearest to the dots to make the voxels' distribution similar to the template.In the optimization, the average distance and the maximum distance between the dot and its nearest voxel are used to measure optimization effect.Considering the system's need for optimization effect and the restricted relationship between the number of two-dimensional slices and the LED column spacing, the number and spacing are calculated, and finally the column spacing that uses the smallest amount of LED and its corresponding number of slices are chosen.