Long-term passive source ocean bottom seismograph(OBS) observatory is challenging due to various technical difficulties. In order to gain experience in this field, and to reveal the lithospheric struc
The permeabilities of fault rocks from the rupture of Wenchuan earthquake were measured by using nitrogen gas and distilled water as pore fluids under the confining pressure ranging from 20 to 180 MPa
By using precise leveling data observed between 1985 and 2010 across the south section of the Longmenshan fault zone,and eliminating the coseismic displacements caused by the Wenchuan Ms 8.0 earthquak
Changes in the hydrological processes in alpine soil constitute one of the several key problems encountered with studying watershed hydrology and ecosystem stability against the background of global w
To investigate the relationship between velocity structure and earthquake activity on the southeastern front of the Tibetan Plateau, we make use of continuous observations of seismic ambient noise dat
Generating computer animated flames is a difficult and computationally expensive problem. Dynamic textures provide an effective means for extrapolating and synthesizing dynamic flames, but aggravates
基于局部特征描述符的主要方法正在被用于纹理分类、目标检测和识别.灰度共生矩阵(GLCM)是一个体现纹理图像的很流行的方法,也被证明是一个非常强大的纹理分析工具.灰度共生矩阵所带来的子图像重叠非常严重,要花大量的时间去计算.本文提出一种高效灰度共生矩阵的计算方法,并通过实验结果来显示其效率.
在分析研究了卫生陶瓷生产出现的缺釉图像,对于缺釉目标图像检测,提出了一种基于机器视觉技术的检测算法,该算法和Roberts,sobel,laplacian,prewitt,Kirsch等算法相比较,定位精确,不漏检真边缘且又不引入假边缘。经过试验分析,该算法对缺釉图像检测能力较强,具有精度高、缺釉目标识别速度快,稳定性好等特点。为卫生陶瓷缺釉检测工作提供了新的思路。
A fast algorithm based on the grayscale distribution of infrared target and the weighted kernel function was proposed for the moving target detection(MTD) in dynamic scene of image series. This algori
Compared with the conventional X-ray absorption imaging, the X-ray phase-contrast imaging shows higher contrast on samples with low attenuation coefficient like blood vessels and soft tissues. Among t