一种新的全姿态指示画面填充算法

现代飞机座舱主飞行仪显示系统中,全姿态指示天地区域的填充是件非常费时的工作。提出了一种新的区域填充算法。该算法第一步引入分块查找的思想以及基于填充区域的特点确定采用水平线或者竖直线扫描方式,并且对区域轮廓中满足关键码字段的像素点建立坐标数组;第二步根据已确定的扫描方式进行区域填充。此外,求取新旧地平线交点并没有采用通过大量数值计算直接求取的方法,而是采用了比较法。实验结果表明该算法显著提高了填充速度和显示效果,降低了数据存储空间量。

One new filling algorithm of ADI graphics

The filling of the region portraying sky and ground within the Attitude Director Indicator(ADI) of modern airplanes is a time-consuming work.A new region filling algorithm is presented in this paper.This algorithm first chooses horizontal or vertical scanning method based on block searching idea and the feature of filling region.Then the algorithm sets up coordinate arrays of the pixels in the region contour which meeting key field requirements.In the second step,it fills the region adopting the determined scanning way.Instead of the direct confirmation of the point of intersection of the lines which needs mass calculation,this algorithm adopts comparison method.Experiment result showed that the algorithm can improve the filling speed and display effect,and also decrease the data storage space.