A calculation method of core porosity based on industrial CT images

A calculation method of core porosity based on core target data is proposed as a strategy to solve the problems caused by the current method based on industrial CT images which usually uses local region in images. The key of this method lies in the accurate extraction of the core target from industrial CT images. On the basis of a research of the structure and position relations of the core target and ambient noises in CT images, an effective method is proposed to accurately extract core target from industrial CT images. According to this method, the core porosity of a single CT image can be obtained by calculating the ratio of pore pixels to target pixels, with core target in industrial CT images used as data source. As for the core porosity based on a sequence of CT images, it can appeal to the calculation of the mean value of core porosity of each image in this sequence. Finally, this paper illustrates the accuracy and effectiveness of the method proposed in this research with an example of core porosity calculation based on a sequence of industrial CT images of a core sample.