基于STM32的MicroOLED快速自适应Gamma校正

Fast Adaptive Gamma Correction for MicroOLED Based on STM32

基于STM32提出了一种MicroOLED快速自适应Gamma校正算法,首先对MicroOLED内部Gamma寄存器线性赋值,测量多个灰度值下亮度,再拟合出亮度值和数据电压之间的关系式,根据关系式对Gamma寄存器的值精确修改,可快速实现不同γ值的校正,为抑制Gamma曲线随亮度的偏移,引入多电压曲线拟合,使整个设备可以实现亮度自适应Gamma校正。实验证明了该算法在头戴式显示领域具有很大的应用价值。

A fast adaptive Gamma correction algorithm for MicroOLED was proposed based on STM32.The algorithm first linearly assigned values to the Gamma registers inside MicroOLED,measured the brightness at multiple gray values,and then fit the relationship between the brightness values and the data voltages.According to the relationship,the values of Gamma registers were accurately modified.In order to suppress Gamma curve shift with brightness,multi-voltage curve fitting was introduced to enable the whole device to realize brightness adaptive Gamma correction.It was proved that the algorithm had great application prospects in the field of head-mounted display by experiment.