基于FPGA的座舱仪表图形反走样技术研究

Research on Antialiasing Technology Based on FPGA for Cockpit Display System

随着现代战斗机座舱仪表向大屏化、综合化方向发展,对图形显示的质量和速度提出了更高的要求。该文从分析有源矩阵液晶显示器(AMLCD)图形走样现象的根本原因入手,分析并阐述了图形反走样技术的基本原理和常见方法。提出了利用二维圆锥滤波器实现座舱仪表图形反走样,并详细阐述了实现方法。最后,为了提高座舱仪表的图形生成速度,提出了一种基于FPGA的嵌入式硬件图形反走样方案,并成功应用于所研制的飞机座舱仪表显示系统中,提高了飞机座舱仪表图形显示的质量与速度。

Development of cockpit display system for fighter plane has a tendency to large-screen and integration.As a result,higher graphical quality and higher speed are demanded.This paper analyzes the essential reasons for aliasing phenomena in AMLCD graphics display.Some basic theories and general methods for antialiasing are introduced,An antialiasing method is proposed using two-dimenslon-cone-filter,and demonstrate the process.At the end,a method to execute antialiasing by using FPGA is proposed to accelerate the creation of graphics.Thls method is implemented to aircraft cockpit display system successfully.The result show that the graphical quality and speed is improved.