数字图像伪彩色增强方法在岩土CT图像分析中的应用
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摘要
直观岩土CT图像分析是最基本的CT分析方法,而高分辨率的岩土CT图像是这一分析方法的关键。为了提高岩土CT图像的分辨率,根据人眼的视觉特点,结合计算机数字图像颜色模式和图像格式,采用灰度级-彩色变换方法,对灰度CT图像进行伪彩色增强,显著地提高了CT图像的分辨率。
As a non-destructive and non-invasive technique,CT technique has been successfully used to detect internal fracturing process of soil and rock. In previous geotechnical CT image analysis,CT data are transformed into gray-scale images as usual. However,it is well known that human vision is less sensitive to difference between gray-scale pixels than that between color ones,so the detailed distribution of CT number is not easily recognized based on gray-scale CT images. In order to improve the discriminability,a pseudo color enhancement method based on gray-scale-color transform is used for geotechnical CT image,and some of gray-scale CT images are enhanced using this method. It clearly shows that the enhanced CT images can be more easily discriminated than gray-scale ones.
As a non-destructive and non-invasive technique,CT technique has been successfully used to detect internal fracturing process of soil and rock. In previous geotechnical CT image analysis,CT data are transformed into gray-scale images as usual. However,it is well known that human vision is less sensitive to difference between gray-scale pixels than that between color ones,so the detailed distribution of CT number is not easily recognized based on gray-scale CT images. In order to improve the discriminability,a pseudo color enhancement method based on gray-scale-color transform is used for geotechnical CT image,and some of gray-scale CT images are enhanced using this method. It clearly shows that the enhanced CT images can be more easily discriminated than gray-scale ones.
引文
1丁卫华,许彦卿,薄毅彬等.X射线岩石CT的历史与现状[J].地震地质,2003,25(3):467～467
2杨更社,谢定义,张长庆等.岩石损伤CT数分布规律的定量分析[J].岩石力学与工程学报,1998,17(3):279～285
3葛修润,任建喜,蒲毅彬等.岩石疲劳损伤扩展规律CT细观分析初探[J].岩土工程学报,2001,23(2):191～195
4李晓军,张?橇?CT技术在土体结构性分析中的应用初探[J].岩土力学,1999,20(2):62～66
5陈蕴生,李宁,李爱国等.非贯通节理介质细观损伤演化CT分析[J].岩石力学与工程学报,2000,19(6):702～706
6KawakataH,ChoA, KiyamaT,etal.Three-d imensionalob se rvations offault ingprocessinWeste rlyGr aniteund eruniaxial cond ition sbyCTX-rayscan[J].Tectonophysics,1999,313(3):293～305
7UetaK,TaniK,KatoT.Compu terizedX-r aytopogr ap hyanalysisofthree -dime nsionalfau lt geometriesinbase ment-i nducedwrenchfaulting[J].EngineeringGeology,2000,56(1/2):1 97～210
8BayBK,S mith TS,FyhrieD P,etal .Digitalvolumecorrelation:thr ee-dim ensiona lstrainmappingusingX-raytopography[J].ExperrimentalMechanics,1999,39(2):217～226
9蒲毅彬,陈万业,廖全荣.陇东黄土湿陷过程的CT结构变化研究[J].岩土工程学报,2000,22(1):49～54
10赵荣椿.数字图像处理导论[M].西安:西北工业大学出版社,1995
11KennethR.数字图像处理[M].Castleman,朱学刚,林学訚等译.北京:电子工业出版社,2002
12何斌,马天予,王运坚等.VisualC++数字图像处理[M].北京:人民邮电出版社,2002
13张秀娟,孙忠林,马万良.医学细胞图像的伪彩色增强[J].山东矿业学院学报,1999,18(3):62～64
2杨更社,谢定义,张长庆等.岩石损伤CT数分布规律的定量分析[J].岩石力学与工程学报,1998,17(3):279～285
3葛修润,任建喜,蒲毅彬等.岩石疲劳损伤扩展规律CT细观分析初探[J].岩土工程学报,2001,23(2):191～195
4李晓军,张?橇?CT技术在土体结构性分析中的应用初探[J].岩土力学,1999,20(2):62～66
5陈蕴生,李宁,李爱国等.非贯通节理介质细观损伤演化CT分析[J].岩石力学与工程学报,2000,19(6):702～706
6KawakataH,ChoA, KiyamaT,etal.Three-d imensionalob se rvations offault ingprocessinWeste rlyGr aniteund eruniaxial cond ition sbyCTX-rayscan[J].Tectonophysics,1999,313(3):293～305
7UetaK,TaniK,KatoT.Compu terizedX-r aytopogr ap hyanalysisofthree -dime nsionalfau lt geometriesinbase ment-i nducedwrenchfaulting[J].EngineeringGeology,2000,56(1/2):1 97～210
8BayBK,S mith TS,FyhrieD P,etal .Digitalvolumecorrelation:thr ee-dim ensiona lstrainmappingusingX-raytopography[J].ExperrimentalMechanics,1999,39(2):217～226
9蒲毅彬,陈万业,廖全荣.陇东黄土湿陷过程的CT结构变化研究[J].岩土工程学报,2000,22(1):49～54
10赵荣椿.数字图像处理导论[M].西安:西北工业大学出版社,1995
11KennethR.数字图像处理[M].Castleman,朱学刚,林学訚等译.北京:电子工业出版社,2002
12何斌,马天予,王运坚等.VisualC++数字图像处理[M].北京:人民邮电出版社,2002
13张秀娟,孙忠林,马万良.医学细胞图像的伪彩色增强[J].山东矿业学院学报,1999,18(3):62～64
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