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新一代載人航天器顯示儀表的圖形加速算法研究
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蘭州空間技術(shù)物理研究所

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Research on Graphics Acceleration Algorithms for Display Instruments of New Generation Manned Spacecraft
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    摘要:

    針對航天顯示儀表對圖形快速繪制的需求,研究現有2D圖形繪制算法。提出改進(jìn)的Bresenham直線(xiàn)繪制方法,利用線(xiàn)段中點(diǎn)進(jìn)行加速繪制,一次循環(huán)可同時(shí)繪制兩個(gè)點(diǎn),比原算法節省了約30%的計算步驟;提出基于凸多邊形的種子填充算法,利用凸多邊形的某一單邊確定填充種子,記為填充起點(diǎn),以余下的邊作為填充邊界,記為填充終點(diǎn),將所有起點(diǎn)終點(diǎn)進(jìn)行對應劃線(xiàn)完成填充,簡(jiǎn)化了計算步驟,算法復雜度減半。經(jīng)過(guò)實(shí)驗驗證該算法在繪制復雜儀表圖像時(shí)在執行時(shí)間方面的優(yōu)越性,在理論和實(shí)驗上都優(yōu)于傳統算法,能夠較好的滿(mǎn)足航天顯示儀表對二維圖形加速的需求,已成功應用到載人飛行器儀表中。

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    In response to the demand for rapid graphics rendering of aerospace display instruments, the existing 2D graphics rendering algorithms are studied. An improved Bresenham line drawing method is proposed, which uses the midpoint of the line segment to speed up the drawing. Two points can be drawn at the same time in one cycle, which saves about 30% of the calculation steps than the original algorithm; a seed filling algorithm based on convex polygons is proposed, which uses convex polygons. A certain single side determines the filling seed, which is recorded as the starting point of filling, and the remaining edges are used as the filling boundary, which is recorded as the filling end point. All starting and ending points are marked to complete the filling, which simplifies the calculation steps and reduces the algorithm complexity by half. Experiments have verified the superiority of the algorithm in terms of execution time when drawing complex instrument images. It is better than traditional algorithms in theory and experiment, and can better meet the needs of aerospace display instruments for acceleration of two-dimensional graphics. It has been successfully applied to In the instrument of the manned aircraft.

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張慶熙,夏加高,李文新.新一代載人航天器顯示儀表的圖形加速算法研究計算機測量與控制[J].,2021,29(7):269-274.

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歷史
  • 收稿日期:2021-06-18
  • 最后修改日期:2021-06-23
  • 錄用日期:2021-06-25
  • 在線(xiàn)發(fā)布日期: 2021-07-23
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