一种等离子体显示运动图像动态假轮廓评测新方法

针对交流等离子体显示器(ACPDP)运动图像动态假轮廓的产生机理,建立了基于子场划分的ACPDP运动图像亮度感知模型,并在该模型的基础上提出了ACPDP运动图像动态假轮廓的评测方法.首先根据建立的ACPDP运动图像亮度感知模型及图像运动速度计算出相邻两场每个像素的子场积分向量,并以一场时间为积分时间,用动态积分法对两个子场的积分向量进行计算,得到运动图像动态假轮廓的评测结果.该方法不仅符合人眼视觉系统跟踪及积分效应,而且符合ACPDP子场驱动方法的特点.在不同运动速度和不同子场编码条件下,仿真结果与实际经验及已有的研究结果相符,能正确地反映出运动速度和子场编码对动态假轮廓的影响,可应用于子场编码方案的优化.

Novel Method for Evaluating Dynamic False Contour of Motion Image in Alternating Current Plasma Display Panel

According to the generating mechanism of dynamic false contour in alternating current plasma display panels (AC PDP), a motion image brightness perception model, which coincides with eye-tracing integration effect and subfield partition in AC PDP, was established, and a novel method for evaluating the dynamic false contour based on this model was proposed. In the evaluating method, two subfield integration vectors for each pixel in two adjacent fields were calculated according to the image moving speed and the established motion image brightness model. The two vectors were integrated over one field time through dynamic integration to derive the dynamic false contours. The evaluation method coincides with both of the eye-tracing integration effect and the characteristics of subfield driving method. The simulation results agree with those obtained by other methods for different image moving speed and different subfield coding. This method can exactly describe the influence of the image moving speed and subfield coding on the dynamic false contour, and can be applied to the optimization of the subfield coding in AC PDP.