CT image-based hepatic blood vessel three-dimensional segmentation method
A technology for liver blood vessels and CT images, applied in the field of image processing, can solve the problems of under-segmentation of segmentation results, long processing time, and unsuitability for clinical use.
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[0035] like figure 1 As shown, the present invention provides a method for three-dimensional segmentation of liver blood vessels based on CT images, comprising the following steps:
[0036] 1. A case of human abdominal cavity enhanced CT image I O with the corresponding liver mask image I lMask Carry out logical AND operation to obtain the image I of the region of interest in the liver VOI , liver mask image I lMask The acquisition of can refer to the relevant liver segmentation algorithm.
[0037] 2. For Image I VOI Adaptive S-shaped nonlinear grayscale mapping to obtain 3D VOI image with enhanced contrast of liver vessels I S . The specific implementation is as follows:
[0038] 1) Image I of liver region of interest VOI Carry out k-means clustering, the number of cluster centers is 5, and the image I is obtained k .
[0039] 2) Image I k According to the gray intensity of the cluster center, it is divided into 5 regions from low to high. Region 1 represents the bac...
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