OpenGL在雷达图像实时显示中的应用

Application of OpenGL in Radar Image for Real-Time Display

采用OpenGL图形显示硬件(显卡)的软件接口,以OpenGLAPI调用被传送的硬件驱动程序,与图形显示硬件直接交互。在雷达图像实时显示中,用glDrawPixels函数绘制像素贴图、glRasterPos定义当前光栅位置、glPixelStore控制像素贴图格式、glPixelZoom设置水平和垂直缩放比例。仿真测试证明,OpenGL能够满足显示需要。

OpenGL is soft interface of image display hardware （display card）. The hardware driver is called by OpenGL API to interacte with image display hardware directly. In the real-time display application of radar image, the chartlet of image point was drawn with glDrawPixels function. The current raster position was defined with glRasterPos, and chartlet form of image point was controlled with glPixelStore. The factor of proportionality for amplification and reduction in horizontal and vertical was set up with glPixelZoom. The result of simulation test proved that the OpenGL satisfies the need of radar image display.