AMOLED灰阶补偿算法研究

AMOLED gray level compensation algorithm

为了解决一种小型AMOLED显示屏由灰阶丢失导致的图像变形问题,提出了一种AMOLED灰阶补偿算法。首先测试不同亮度下AMOLED显示灰阶时亮度变化的数据,然后依据测试数据建立亮度变化与灰阶丢失的映射关系,最后使用非线性灰阶压缩的方法对输入图像进行变换,补偿灰阶丢失引起的图像失真。通过软件仿真和硬件测试表明,该算法可以有效地补偿由于AMOLED亮度变化而无法正常显示的灰阶的问题,使图像能够正常显示。因此该算法可以保证小型AMOLED显示屏在不同亮度下工作时能够正常显示灰阶。

To solve the problem of image deformation on the small AMOLED display,which caused by loss of gray level,a gray level compensation algorithm is proposed.First of all,test data of gray level display is acquired at different luminance.According to the test data,the mapping between brightness change and loss of gray level is established.Finally,using a nonlinear gray level compression method to process an input image,image distortion for loss of gray level is compensated.The software simulation and hardware test result show that the algorithm can effectively compensate abnormal display gray level because of AMOLED display brightness variation,and make it normal display.Therefore,the algorithm is enabling the small AMOLED display to display gray level properly at different brightness.