机载显示器亮度自适应调节算法研究

合适的亮度能够帮助驾驶员更加准确有效地获取机载显示器上的信息。为了使显示器亮度能够适应各种环境光照度，提出了基于韦伯-费希纳定律的步进式亮度调节算法，将显示器亮度与环境光照度的对数成正比，同时根据人眼能识别的最小相对亮度变化量将显示器亮度进行分级，以人眼明暗适应的不同要求调整步进大小，使显示器亮度能够在环境光照度变化时自动而柔和的调节。为了满足不同驾驶员的个性化要求，还考虑了手动调节介入的影响，使自动亮度调节曲线能够实时更新，达到自适应的调节效果。

Research on Adaptive Adjustment Algorithm of Airborne Display Brightness

Suitable brightness can help the pilot access to information on airborne display more accurately and effectively.To make sure that the display brightness can adapt to various ambient light illumination, this paper presents a stepped brightness adjustment algorithm based on the Weber-Fechner law. The brightness of the display is proportional to the logarithm of ambient light illumination, while the display brightness is graded according to the minimum relative luminance variation which can be recognized by human eye, and the step size is adjustable due to different demands of bright and dark adaption of human eye, so that the display brightness can be automatically and softly adjusted when ambient light illumination changes. Meanwhile, in order to meet the individual demands of different pilots, considering theeffect of manual adjustment intervention, the automatic brightness adjustment curve can be updated in real-time to realize the adaptive adjustment.