江西科学
江西科學
강서과학
JIANGXI SCIENCE
2011年
5期
555-559
,共5页
信息光学%夫琅禾费衍射%计算机仿真%衍射屏%数字图像处理
信息光學%伕瑯禾費衍射%計算機倣真%衍射屏%數字圖像處理
신식광학%부랑화비연사%계산궤방진%연사병%수자도상처리
Information optics%Fraunhofer diffraction%Computer simulation%Diffraction screen%Digital image processing
基于数字图像处理,讨论了获取衍射屏的线性规划法和数字图像截取法,指出线性规划法只适用于构建能写出数学表达式的有规律图形的衍射屏,而数字图像截取法则可用于构建任何有规律的、无规律的复杂图形衍射屏。对获取的各种衍射屏进行傅里叶变换,就能得到该衍射屏的夫琅禾费衍射图样,大量的仿真结果对学习衍射理论、开辟衍射理论新的应用以及指导实践具有一定的价值。
基于數字圖像處理,討論瞭穫取衍射屏的線性規劃法和數字圖像截取法,指齣線性規劃法隻適用于構建能寫齣數學錶達式的有規律圖形的衍射屏,而數字圖像截取法則可用于構建任何有規律的、無規律的複雜圖形衍射屏。對穫取的各種衍射屏進行傅裏葉變換,就能得到該衍射屏的伕瑯禾費衍射圖樣,大量的倣真結果對學習衍射理論、開闢衍射理論新的應用以及指導實踐具有一定的價值。
기우수자도상처리,토론료획취연사병적선성규화법화수자도상절취법,지출선성규화법지괄용우구건능사출수학표체식적유규률도형적연사병,이수자도상절취법칙가용우구건임하유규률적、무규률적복잡도형연사병。대획취적각충연사병진행부리협변환,취능득도해연사병적부랑화비연사도양,대량적방진결과대학습연사이론、개벽연사이론신적응용이급지도실천구유일정적개치。
According to digital image processing,two methods,linear programming and screen digital image intercepting,are discussed in detail to gain various diffraction screens.The former is only applied to show the diffraction screens of some regular diffraction apertures whose diffraction equations can be exactly deduced by mathematic calculation.The latter can be used to draw the diffraction screens of any irregular and complex obstacle.The Fraunhofer diffraction phenomena of various diffraction screens by Fourier transform method are useful not only to apprehend the principle of diffraction theory but also to develop new applications of diffraction phenomena.
