Isocontour

Find ISO-contour geometry in a 2D image using marching-squares, and sort the contour objects
ダウンロード: 4.7K
更新 2024/4/22

ライセンスの表示

This function ISOCONTOUR computes the isocontour geometry for a certain 2D image and isovalue. To Extract the isocontour geometry it uses Marching Squares and linear interpolation. Followed by sorting the contour geometry into separate contour-objects.
This function is the 2D equivalent of Isosurface extraction using Marching Cubes in 3D.
[Lines,Vertices,Objects]=isocontour(I,isovalue);
inputs,
I : An 2D image (grey-scale)
isovalue : The Iso-value of the contour
outputs,
Lines : An array describing all the Line-pieces of the isocontour
geomtery, with a N x 2 index list of vertices
Vertices : Vertices (Corners) of the lines M x 2 list of X,Y
coordinates
Objects : A 1 x K cell array with in every cell a list of indices
corresponding to one connect isocontour. If the isocontour
is closed then the last index value is equal to first index
value.

引用

Dirk-Jan Kroon (2024). Isocontour (https://www.mathworks.com/matlabcentral/fileexchange/30525-isocontour), MATLAB Central File Exchange. 取得済み .

MATLAB リリースの互換性
作成: R2010b
すべてのリリースと互換性あり
プラットフォームの互換性
Windows macOS Linux
カテゴリ
Help Center および MATLAB AnswersScalar Volume Data についてさらに検索

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
バージョン 公開済み リリース ノート
1.4.0.0

Speedup sorting in objects

1.3.0.0

Changed sorting into objects from an n^2 time complexity algorithm into an n time complexity algorithm

1.1.0.0

Line normals now always point to the inside of the object.

1.0.0.0