摘要
为解决大型LED灯饰实时控制系统中截取计算机屏幕图像速度慢和图像数据量大的问题,在屏幕DC方法的基础上,结合内存映射文件技术,设计一种提高屏幕图像采集效率的新方法;同时使用颜色量化技术在保证视频图像效果的基础上有效降低视频图像颜色数据量,提高控制系统的实时性。实验结果表明:该LED灯饰效果优化方法既有较快的屏幕图像截取速率,又在降低图像位数的前提下保证了图像视觉效果,在LED灯饰实时控制系统中应用良好。
To solve the problems of low speed of screenshot of computer screen images and large amount of image data in the large-scale LED lighting real-time control system,a new method to improve the efficiency of the screen image screenshot was designed based on screen device context(DC) method combined with map view of file technology. At the same time,color quantization technology is utilized to reduce the amount of video image data and improve real time performance of the monitoring system,on the condition of good video image effects. The experimental results show that applying the optimized method of improving the LED lighting effects could get a faster screenshot of the screen image with better visual effect. The method is applied in the LED lighting real-time information system.
出处
《中国测试》
CAS
北大核心
2014年第5期96-99,共4页
China Measurement & Test
基金
中国博士后科学基金项目(2011M500130)
