Concave hull for C# (Comes with a Unity demo)

build concave hull from points

Computes a concave hull containing a set of features according to the algorithm described by Adriano Moreira and Maribel Yasmina Santos (2007) implemented as a QGIS plugin.

Finds the concave hull around a set of points by leveraging the Delaunay triangulation

Julia package for calculating 2D concave/convex hulls

Calculate a Concave Hull from a set of points in 2D space

Calculate concave hull(s) from an array of points

A Swift Library that builds concave hull by set of points

A simple program for drawing and visualizing alpha shapes in images.

Golang implementation of st_concaveHull

Concave Hull library based on JTS, supporting mulitple criteria, multi-part hull and hull with holes

Implementation of all algorithms ConvexHull and ConcaveHull on C++

Concave hull(alpha-shape) algorithm written on golang

This program generates a concave hull (an envelope surrounding the point data set) around any two-dimensional data set. The algorithm uses K-nearest neighbour approach to compute the concave hull. This approach is based on the paper "CONCAVE HULL: A K-NEAREST NEIGHBOURS APPROACH FOR THE COMPUTATION OF THE REGION OCCUPIED BY A SET OF POINTS," GRAPP 2007 - International Conference on Computer Graphics Theory and Applications, pp. 61-68, 2007, by Adriano Moreira and Maribel Yasmina Santos. (http://repositorium.sdum.uminho.pt/bitstream/1822/6429/1/ConcaveHull_ACM_MYS.pdf). The convex hull is being computed using Matlab inbuilt 'convhulln' function. A comparative analysis based on the area covered by the convex and concave hull and the run time for each method is also presented. The 'degree of concaveness' is calculated based on the difference between the convex hull and concave hull.

Calculation of concave hull

This repository contains all benchmarking and test code for several concave hull algorithms, including Polylidar.

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Calculates a 2D concave hull for a 2D mesh using the technique described in the paper: "A split and merge procedure for polygonal border detection of dot pattern" by Gautam Garaia and B.B. Chaudhurib.

A standalone implementation of concave hull computation for 3D points using powercrust

Concave hull: A k-nearest neighbours approach for the computation of the region occupied by a set of points

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The hull could be defined as the points that conform the outermost boundary of the set, like a shell showing the volume. There are two types of hull that we can calculate: convexHull and concaveHull

ConcaveHull for Swift

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This concave hull algorithm generates a mesh that wraps a set of points up to a chosen curvature

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