A three-dimensional reconstruction method for a complex organ contour line

Abstract

The invention discloses a three-dimensional reconstruction method of a complex organ contour line, and relates to the technical field of contour line three-dimensional reconstruction. The method comprises the following steps of preprocessing each input organ contour line; establishing a corresponding cylinder curved surface for each layer of the organ contour line; fusing all the cylinder curved surfaces to obtain an integral curved surface; and performing grid smoothing on the integral curved surface by using a weighted Laplace grid smoothing method. By preprocessing an organ contour line, and establishing a cylindrical curved surface of the organ contour line and a nested contour line thereof; meanwhile, fusing the cylinder curved surfaces corresponding to the adjacent organ contour lines to obtain an overall curved surface, and smoothing the overall curved surface through a weighted Laplacian grid smoothing method, the contour line nesting, multi-branch and non-convex contour polygon processing is achieved, the universality of processing complex contour line three-dimensional reconstruction is achieved, the contour line nesting, multi-branch and non-convex contour polygons can be efficiently processed, and the reconstruction efficiency and the reconstruction effect are improved.

Description

technical field [0001] The invention belongs to the technical field of contour line three-dimensional reconstruction, in particular to a method for three-dimensional reconstruction of complex organ contour lines. Background technique [0002] The 3D reconstruction of contour lines has always been an important issue that cannot be ignored in medical visualization. 3D medical data can provide intuitive and valuable scientific references for treatment in clinic, and the processing of complex contour lines has always been a research hotspot, including many Difficult problems like branching, non-convex contours and nesting. The first method is the early common contour line reconstruction method, which obtains the best connection method of triangular patches by calculating the distance between the key points of the upper and lower contour lines. When dealing with complex contour lines, Delaunay triangulation method or other interpolation methods are often used, and the calculatio...

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Problems solved by technology

[0004]The purpose of the present invention is to provide a three-dimensional reconstruction method of complex organ contours, by preprocessing the organ contours, establishing organ contours and their nested contours The cylinder surface of the line; at the same time, the cylinder surface corresponding to the adjacent organ contour line is fused to obtain the overall surface, and the weighted Laplace grid smoothing method is used to smooth the overall surface, which solves the complicated reconstruction process of the existing organ contour line , It cannot handle the problems of contour nesting, multi-branch and non-convex contour polygons with slow processing efficiency and poor processing effect at the same time

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