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1. 发明公开

EP2656305A1 SYSTEM AND METHOD FOR MULTI-PHASE SEGMENTATION OF DENSITY IMAGES REPRESENTING POROUS MEDIA 无效
标题翻译：系统和方法多相分割性影像于显示多孔介质
公开(公告)号：EP2656305A1
公开(公告)日：2013-10-30
申请号：EP11850259.0
申请日：2011-09-20
申请人： Chevron U.S.A. Inc.
发明人： SALAZAR-TIO, Rafael
IPC分类号： G06T1/00 , A61B6/00
CPC分类号： G01N23/046 , G01N15/088 , G01N2015/0846 , G01N2223/1016 , G01N2223/313 , G01N2223/40 , G01N2223/419
摘要： A system and method for multi-phase segmentation of noisy 3D x-ray tomography images representative of porous material minimizing data smoothing which processes 3D x-ray tomography images to obtain a standardized intensity image, segments the standardized intensity image into at least 3 phases, calculates volumetric fractions and spatial distributions of the segmented phases and compares them with target values, and if the calculated fractions are not close enough to the target values, repeats the necessary segmentation steps until the calculated volumetric fractions are within a given tolerance to the target values. The segmentation steps include computing a median/mean-filtered-gradient image of the standardized intensity image, creating an intensity vs. gradient graph from the median/mean-filtered-gradient image and the standardized intensity image, partitioning the intensity vs. gradient graph into at least 3 regions, using thresholds defining the regions to segment the standardized grey scale image to create a segmented image, and applying a despeckler filter to remove noise in the segmented image.
摘要翻译：一种用于噪声的3D X射线断层摄影图像代表最小化，其处理三维X射线断层摄影图像，以获得标准化的强度图像数据平滑化多孔材料的多相分割的系统和方法，程序段的标准化强度图像划分为至少三个相，计算体积分数和分割相位的空间分布，并将它们与目标值进行比较，并且如果计算出的级分是不够接近目标值，重复的必要分割步骤，直到计算的体积分数是一个给定的容差与目标值范围内，分割步骤包括计算所述标准化强度图像的中值/均值滤波梯度图像，强度对的创建从值/均值滤波梯度图像和标准化强度图像的梯度曲线图，将所述强度对梯度曲线分成至少三个区域时，使用阈值限定的区域分割标准化灰度图像创建分割图像，并且应用滤波器来去除噪声去斑分割图像英寸

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