In the field of computer graphics , objects are often represented by triangle mesh , and mesh of object usually contains thousands of polygons . the large - scale data of these models overwhelms the rendering performance of current graphics systems . it is an important focus question how to render object model rapidly and keep better display quality 在计算机图形学中,模型通常由网格进行描述,复杂网格往往包括成千上万个多边形,其大数据量是快速绘制的瓶颈,如何在保证较高逼真度的前提下实现快速绘制是目前亟待解决的难题之一。
Moreover , a novel method is also proposed to using pdp driving ic to perform the traditional pwm modulation . the shared platform is also discussed . besides the circuit design and program , in the paper , according to the typical equivalent pixel unit circuit , analyze the key parameter of the circuit by the support of theory formula deduction , analysis and simulation . it ’ s favorable to improve the high - frequence property of fed sample and enhance the display quality 实际上,文中还提出了采用pdp驱动芯片进行pwm调制的控制方法和相应驱动波形设计,并就与子行灰度调制方法共享有关硬件和软件平台来驱动fed显示屏进行了有益的探讨。除了电路制作和控制编程外,本文从fed显示屏典型像元的等效电路入手,采用理论公式推导、分析和仿真结合,指出了驱动电路设计中的关键参数选择准则。这有利于改善fed整机的高频特性,提高fed的显示质量。
The structure of circuit are highly integrated . it not only has a simple structure , but obtains a more high frequency of signal processing than the circuit based on singlechip . ( the highest working frequency of sinlechip circuit is about 12m while this system almost reach 50m ) a higher speed of signal processing ensure the system achieve a better display quality 本系统将pld芯片设计成系统信号驱动的控制芯片,实现了电路结构的高度集成化,不仅结构简单,而且信号处理的频率大大高于单片机电路(普通单片机电路最高工作频率为12m左右,而本系统控制芯片达到50m以上) ,更快速的信号处理速度保证了系统产生更优良的图像质量。
The complex situation of flight requests that the graphics display of cockpit must be dynamic , real - time and legible . but in the raster graphic display system , scale lines and character will be distorted seriously owe to the limited screen resolution in the case of deflection , which affect the display quality . the thesis based on the research of the last graduate student improves the graphics creating arithmetic more and puts forward more effective arithmetic on scale lines and character for high display quality 由于飞行状态复杂,要求座舱内画面显示动态、实时、清晰。而硬件系统采用的是光栅图形显示,字符和刻度线的旋转受屏幕分辨率的限制存在着锯齿走样现象,影响显示效果。本文在上一届研究生研究的基础上,在图形生成算法上加以进一步改进,重点在刻度线、字符的反走样处理上,研究出了更合理的算法,提高了图形显示质量。