煤矿智能化调度室多媒体图像图形系统研究

Research of Application of Multimedia Image and Graphics Technology in Intelligent Dispatching Room in Coal Mine

分析了煤矿智能化调度室多媒体图像图形系统的构成和标准，该系统由图像处理、图形处理、图像图形显示等部分组成，其中重点分析了图像处理部分．图像采集采用ＰＣＩ总线图像采集卡并将采集后的图像存储为ＢＭＰ的格式；因为来自井下的工业电视图像质量较差，图像增强处理主要采用直方图修正法特别是线性拉伸变换的方法以取得较为理想的图像；视频图像切换器采用了国际流行的矩阵切换设计方法，现场使用非常稳定、可靠；图像远程传输采用波分复用技术，极大地降低了成本．

The structure and standard of multimedia image and graphics system of intelligent dispatching room in coal mine are described. The system consists of image processing, graphics processing and the display of image and graphics. Among these parts image processing is discussed on emphasis. The image is collected by using the image frame grabber adopted as the bus of PCI and the sampled image is stored in the form of BMP. Because of the bad quality of industrial television image coming from coal mine, image enhancement processing is done to get satisfied image, mainly employing the method of histogram correction especially transformation of linear stretch. The video image switching equipment is designed popularly in the world which has proved stable and reliable in practice. The technology of WDM which decreases the cost greatly is used in the longdistance transmission. In brief, the establishment of multimedia image and graphics system of intelligent dispatching room will improve the modern management