Vol.25 No.3 李庆利等：一种基于多项式插值改进的亚像素细分算法 ·283· 2吴晓波.应用多项式插值函数提高面阵CCD尺寸测6吴晓波.图像测量系统中的误差分析及提高测量精 量的分辨力.仪器仪表学报，1996,7(2)：154 度的途径].光学精密工程，1999,5(I):133 3王建民.空间矩亚像素细分算法的研究[仍.光学技 7吴剑锋.一种图像边缘检测的新算法).福州大学 术，1999(4)：37 学报，2000,28(4)：26 4王建民.提高图像测量系统精度的细分算法的研究 8 Yu Jinzhang.Optimal selection of segmentation algor- [光学精密工程，1998,6(4)：45 ithms based on performance evaluation [J].Optical Eng, 5余新平.一种具有抗噪声干扰的图像边缘提取算法 2000,396):1450 的研究[J.电子技术应用，19991)：46 A Improved Subpixel Edge Detecting Algorithm Based on Polynomial Interpola- tion LI Oingli2,ZHANG Shaojun,Li Zhongfu",BAl Yinjiu,JIN Jian",GOU Zhongkut 1)Mechanical Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2)Tangshan College,Tangshan 063000,China ABSTRACT A improved subpixel edge detecting algorithm based on polynomial interpolation,masks and cal- culating formulae is introduced,the error cause of the operator is analyzed,and the error formula is derived.The al- gorithm uses direction masks based on classical Sobel masks in converting gray into gradient images and applies the polynomial interpolation to subpixel edge detecting at the gradient direction of edge on gradient images.Some examples are presented to demonstrate the effectiveness of the method. KEY WORDS subpixel;imaging measurement;accuracy;edge detection;image segmentation 6。e望e堂es望0望e望e理e业es望ee堂望望es亚8a望a望eee6a5 esPeATeoTesTes堂堂es2e望望s望0望as望e业 上接第198页 DDT Sensitivity of Powdery Emulsion Explosives DUAN Baofu WANG Xuguang,SONG Jinguan 1)Blasting Institute,Liaoning Technical University,Fuxing 123000,China 2)Beijing General Research Institute of Mining Metallurgy,Beijing 100044,China 3)Civil Environment Engineering School,University of Science and Technology Beijing,Beijing 100083,China ABSTRACT The DDT sensitivity of powdery emulsion explosives(PEE)containing aluminum or not is inves- tigated.It is found that PEE can not self-keep burning and DDT occurs when the content of aluminum is less than 4%without external adequate and continuous heat energy.When the content of aluminum is higher than 8%,the burning of PEE hastens obviously and the DDT sensitivity increases largely.It is concluded that the DDT sensitivity of PEE is affected by many factors such as restriction,loading density,particle size,and the content of aluminum. KEY WORDS DDT;sensitivity;burning detonationV d l 一 2 5 N 0 . 3 李庆利 等 : 一种 基 于多项 式插 值改进 的亚像 素细 分算 法 · 2 8 3 · 2 吴 晓波 . 应用 多项 式插 值 函 数提 高 面阵 C C D 尺寸 测 量 的分 辨力 [ J I . 仪 器仪表 学报 , 1 9 9 6 , 7 ( 2 ) : 15 4 3 王建 民 . 空 间矩 亚像素细分 算法 的研 究 J[ . 光学 技 术 , 1 9 9 9 ( 4 ) : 3 7 4 王建 民 . 提 高 图像测 量 系统精 度 的细分算 法 的研 究 [J] . 光 学精 密工 程 , 1 9 9 8 , 6 ( 4 ) : 4 5 5 佘新平 一种具 有抗 噪声 干扰 的 图像 边缘 提取 算法 的研究 1J[ . 电子技术 应用 , 19 9 9( l) : 46 6 吴 晓波 . 图像测 量 系统 中的误差分 析及 提 高测量 精 度 的途径 [J] . 光 学精密工 程 , 19 9 9 , 5 ( l ) : 1 33 7 吴 剑锋 . 一种 图像 边缘 检测 的新 算法 [J . 福 州大 学 学报 , 2 0 0 0 , 2 8 ( 4 ) : 2 6 8 uY Ji n z han g . O Pt im a l s e l e e t i o n o f s e g m e n t a t 1 o n a lg o r - i th m s b a s e d o n P e r of rm an e e e v a l u at i o n [J ] . O P ti e a l E n g , 2 0 0 0 , 3 9 ( 6 ) : 14 5 0 A Im P r o v e d S ub P i x e l E d g e D e t e e t i n g A lg o r i ht m B a s e d o n P o lyn o m i a l I n t e pr o l a - t i o n Ll Qi n g li l , , , , 乙从刁刃G hS ao, un , , , L i hZ o 声吸斥 l , , BA I 儿可i u Z) , 刀八厂 iaJ n ” , G O U hZ o 尸 glk u i , , l ) M e c han i e a l E n gi n e e r in g S e h o o l , U n i v e rs ity o f s e i e n e e an d eT e hn o l o gy B e ij ign , B e ij in g l 0 0 0 8 3 , C h i n a 2 ) 1初l g sh an C o ll e g e , T 田l g s h an 06 30 0 0 , C h ian A B S T R A C T A im P r o v e d s ub P i x e l e d g e d e t e c t ign a lg o ir t h m b a s e d o n P o l y n o m i a l int e rp o l at ion , m a s k s an d e a l - e ul iat n g fo n 刀 u l a e 1 5 intr o du e e d , ht e e r o r e au s e o f ht e o P e art o r 1 5 an a ly z e d , an d ht e e or r fo n 刀 u l a i s d e ir v e d . hT e a l - g o ir t hj m u s e s d ir e e t i o n m as k s b a s e d o n e l a s s i e a l S o b e l m a s k s i n e o vn e rt i n g gr a y int o gr ad i e nt im a g e s an d ap P li e s ht e P o lyn o m i a l i net pr o lat i o n t o s ub P i x e l e d g e d e t e e t i n g at ht e gr a di e in d i er e ti o n o f e dg e o n gr iad ent im a g e s . 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It i s e o n c ldu e d th at ht e D D T s e n s it i v iyt o f P E E 1 5 a fe e t e d b y m a n y af e t o r s s u e h a s r e s t ir e t i o n , l o a d ign d e n s i yt, Part i c l e s i z e , an d ht e e o in e nt o f al um i n um . K E Y W O R D S D D ;T s e n s iit v i yt : b哪i n g d e t o n at i o n