眼镜式立体显示中的串扰分析及消除方法研究

随着立体显示技术的广泛应用,立体显示图像质量受到了越来越多的重视。目前,串扰现象是影响立体显示技术中图像质量和观看舒适度最主要的因素之一。为消除眼镜式立体显示技术中的串扰现象,提出了一种基于图像处理的串扰消除方法。该方法从观看者的角度出发,将观看通道与非观看通道具有相同灰度时透过观看通道眼镜测得的亮度定义为理想输出亮度,利用亮度计测量得到的眼镜式立体显示器的光输出特性,经过计算得到左右视图灰度查找表,应用左右视图灰度查找表在显示立体图像时消除串扰。分析结果表明,提出的方法平均串扰减少率的理论值高达75%。同时,提出的方法合理利用了非观看通道的漏光等串扰信号,将立体图像亮度提高了12%。提出的方法应用简单,同时适用于时间复用和空间复用的眼镜式立体显示技术。

Crosstalk Analysis and Cancellation Method Study in Stereoscopic Displays

With the increasing application of stereoscopic displays, the performance of stereoscopic displays attracts more and more attention. Crosstalk is one of the main perceptual factors influence image quality and visual comfort. To eliminate the crosstalk of liquid crystal based stereoscopic displays, based on a novel image processing crosstalk cancellation method is proposed. The proposed method reduces crosstalk from the aspect of the observer, and the light measured when the non-observed channel has the same gray level as the observed channel is defined as the ideal light output of the channel under test. The light output characteristic of specific stereoscopic display is measured using time average luminance meter and look up table is derived for crosstalk reduction. The theoretical calculation results show that the proposed method reduces crosstalk by 75% in average. Besides, the proposed method makes full use of the light leaked from the other eye view, which improves the luminance by about 12% according to the experiment. The proposed method can be applied both on time-multiplexed and on spatial-multiplexed stereoscopic display technologies and is easily implemented.