Patent ID: 8723871

Claim:
A non-transitory computer-readable storage medium with an executable program stored thereon, wherein the program instructs a microprocessor to perform a method for displaying a branch structure, said method comprising: performing a segment generating step by a microprocessor, comprising: providing a start position defined as a three-dimensional coordinate (x 0 , y 0 , z 0 ); providing an interplanar distance statistical distribution; selecting an interplanar distance dZ according to said interplanar distance statistical distribution; providing a radius statistical distribution; selecting a radius according to said radius statistical distribution; defining an end position to be on a circumference based on said radius that lies parallel to an xy plane corresponding to said three-dimensional coordinate, at said distance dZ from the xy plane; providing a segment according to the start position and the end position, and providing a first branch by utilizing the segment; and determining whether to provide a second branch from the segment, and providing the second branch accordingly; forming the branch structure from the first branch and the second branch; and visually and segmentally displaying the branch structure.