LED 灯饰效果处理与优化方法

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（Device Context）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；同时在保证视频图像效果的基础上，使用改进型八叉树颜色量化技术有效降低视频图像颜色数据量，提高监控系统的实时性。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 灯饰实时信息处理显示系统中应用良好。%To solve the problems of low speed in computer screen images capturinge and large amount of image data the large-scale LED lighting real-time control system has,we design a new method to improve the efficiency of screen image collection based on screen device context (DC)method and combining the memory-mapped file technology.Meanwhile,on the basis of ensuring good video image effect,we utilise the improved octree colour quantisation technology to reduce the data amount of video image colours effectively and to improve the real time performance of monitoring system.Experimental results show that this LED lighting effect optimisation method achieves faster screen image capturing rate;besides,it also guarantees the visual effect of image on the premise of reducing image bits.The method is well applied in real-time information processing and display system of LED lighting.