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中文摘要：
画面校正是实现无缝多投影显示墙系统的关键环节，针对此，提出了一种基于参数估计和统计思想的全局颜色校正方法，首先根据采样点的粗略分布建立亮度响应曲线的经验参数模型，并通过采样数据来确定该曲线的参数；然后依据亮度响应曲线，引入统计算法来调整投影仪输入，从而实现视觉上无缝的多投影拼接显示．最后在2×2和3×5多投影显示墙上进行了该算法的可行性和效果测试．结果表明，该算法比现有颜色校正算法的画面质量更好，亮度更高。
英文摘要：
Color correction is a key step for implementing seamless tiled display wall, and a new algorithm based on parameter estimation and statistic is proposed in this work. The algorithm first selects a parametric curve to match the intensity transfer function （ITF） based on the sampling points, and estimates the parameter curve via some nonlinear optimization method. Then it uses statistic methods to adjust the input of each projector and achieves the visual-allowance seamless tiled display wall. In order to examine the feasibility and effectiveness, the proposed algorithm was implemented on a 2 × 2 and 3 ×5 tiled display wall. The test results show that our proposed algorithm can achieve better and brighter display effect than the existing algorithms.
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