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geometric measures in 2D/3D images 1.0
File ID: 83355






geometric measures in 2D/3D images 1.0
Download geometric measures in 2D/3D images 1.0http://jlearn.sourceforge.net/Report Error Link
License: Shareware
File Size: 81.9 KB
Downloads: 7
Submit Rating:
geometric measures in 2D/3D images 1.0 Description
Description: Contains various functions for measuring or estimating geometric quantities from 2D or 3D images.

Parameters available for 2D images are:
* the area (number of pixels)
* the perimeter (based on Crofton formula)
* the(2D) Euler Number

Parameters available for 3D images are:
* the volume,
* the surface area (measured using the Crofton formula),
* the mean breadth (also known as integral of mean curvature),
* the (3D) Euler Number

Most functions work both for binary and label images. It is possible to specify options (connectivity for Euler Number, number of directions for perimeter or surface area), as well as image resolution in each direction. For some parameters, it is also possible to estimate the density with respect to image area or volume.

Example 1: measure perimeter in 2D label image
lbl = bwlabel(imread('coins.png') > 100);
p = imPerimeter(lbl)
p =
184.8668 154.9495 185.1921 267.1690 187.3183 179.5038 182.7406 180.8445 155.5049 155.5049

Example 2: measure surface area in 3D binary image
img = analyze75read(analyze75info('brainMRI.hdr'));
bin = imclose(img>0, ones([5 5 3]));
S = imSurface(bin, [1 1 2.5]) % specify resolution
ans =
2.7291e+004

License: Shareware

Related: estimate, parameters, density, respect, Measure, direction, Resolution, Options

O/S:BSD, Linux, Solaris, Mac OS X

File Size: 81.9 KB

Downloads: 7



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