为了提升LED显示屏的显示效果,提出一种基于FPGA的自适应伽马校正算法。首先,该系统通过摄像头实时采集周围信息并进行灰度处理;其次,将灰度处理的画面分割为周围环境和灯板两部分;再次,通过比对两部分的平均亮度信息确定伽马校正参数;最后,对输入视频源进行实时伽马校正。实验结果表明,该算法可以应用在输入为1080P@60 Hz的LED显示屏系统中,在不同环境下的伽马校正效果对比明显,有效提升人眼观看的舒适度。
Abstract
To improve the display effect of LED display,an adaptive gamma correction algorithm based on FPGA is proposed.Firstly,the system collects the surrounding information in real-time and performs gray processing through the camera.Secondly,the gray image is divided into two parts:the surrounding environment and the light board.Thirdly,the gamma correction parameters are determined by comparing the average brightness information of the two parts.Finally,real-time gamma correction is performed on the input video source.The experiment results show that the algorithm can be applied to LED display system with input 1080P@60 Hz,and the gamma correction effect is obviously compared in different environments,and the comfort of human eyes is effectively improved.
关键词
伽马校正 /
LED显示 /
FPGA /
图像处理
Key words
gamma correction /
LED display /
FPGA /
image processing
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基金
*江苏省产业前瞻与关键核心技术重点项目(BE20200062);国家自然科学基金(61605083)。
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