rmukh

#!/usr/bin/env python3
"""
Read and store FreeSurfer Color Lookup Table (LUT)

FreeSurfer provides a color lookup table (LUT) that maps anatomical region codes
to label names and their corresponding RGB(A) colors.

Reference:
https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/AnatomicalROI/FreeSurferColorLUT
or locally (if FreeSurfer is installed):

rmukh

template<typename T>
T UtilMath::convhulln(T& u, double tol = 0.001) {
	/* 
	Convex hull (might be a conflict between VTK 7 and 8 versions)
	*/

	// Convert from Eigen to vtkPoints (probably make as an function)
	vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
	for (unsigned i = 0; i < u.rows(); ++i)
		points->InsertNextPoint(u(i, 0), u(i, 1), u(i, 2));

rmukh

A handcrafted collection of 3D convex hull implementations, slides and papers with some theory and explanations.

Implementations

C/C++

• C++ implementation of the 3D QuickHull algorithm. Header-only, public-domain C++11 library. Uses the QuickHull approach with average-case O(n log n) complexity and worst-case O(n²). Suitable for inclusion in performance-critical projects.
• CGAL library 3D convex hull based on quickhull. Highly robust and exact implementation based on the underlying triangulation framework. Time complexity O(n log n) in 3D. Requires CGAL installation; static linking yields significantly better performance than dynamic (e.g., 1.63s vs 9.50s for 1M points).
• CDT included in CoACD ex V-HACD. A comprehesive set of packages (beyond conve

rmukh

from os import remove, path, makedirs
from random import choices, randint
from sys import argv, exit
from urllib.request import urlretrieve
from string import digits, ascii_uppercase, ascii_lowercase
from threading import Thread

#global variables
incrt_sizes = [0, 503, 4939, 4940, 4941, 12003, 5556]
temp = 1