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Voxels
All | Freeware

Code 1-12 of 12   






This M-function produces an image of a 3D object defined by matrix a(l,m,n) in terms of voxels.



This function generates patch data (faces d-deDUFd-deDt, vertices d-deDUVd-deDt and color data d-deDUCd-deDt) for 3D images. The patches are only generated for the voxels specified by the linear indices in d-deDUINDd-deDt. The variable...



This simple function creates a structure array containing coordinate and colour data for 3D images. The example below shows how the function allows one to use the patch function to plot the whole image or a selection of voxels in 3D. The CData is...



This function gives an easy solution to show a voxel-based object. Just give the centers of the voxels and the voxel size, and you will get a nice 3D image. Some more features are available, like face color and edge color.

Syntax:



Usage: createColorHistograms(im_str)
im_str can be an image file location or a three-dimensional array

There seem to be two confounds in plotting color histograms. One is the obvious one of showing a three-dimensional distribution...



This program allows users to remove zero padding by deesired number (called offset) of layers of z
zero padding allows image processing to occur at the edges of the 3D image because many image processing filters take into account the values...



This program allows users to specify the number of zero layers to wrap around a 3D image matrix.
Zero padding allows image processing to occur at the edges of the 3D image. Many image processing filters take into account the values stored in...



This is a program to test how a 1D gaussian filter can be used to smooth a set of 3-D data.
This example uses a gaussian filter extracted from wikipedia:
kernel = [0.125 0.625 1 0.625 0.125] for standard normal distribution. Note that...



STLWRITE(FILE,fv) writes a stereolithography (STL) file to FILE for a triangulated
patch defined by FV (a structure with fields 'vertices' and 'faces').

STLWRITE(FILE,FACES,VERTICES) takes faces and vertices separately, rather...



USAGE
=====

This function enables a 3D array to be displayed using a patch surface mesh. To plot a 3D logical array, the function is called using the following syntax:

>> hpat =...



Voxelize a closed (ie. watertight) triangular-polygon mesh. The mesh can be in one of several formats: in an STL file; in a structure containing the faces and vertices data; in three 3xN arrays containing the x,y,z coordinates; or in a single...



3D Affine matrix is such a 4x4 matrix:

M = [ [R T]; [0 0 0 1] ];
[x2 y2 z2 1]d-deOao = M * [x1 y1 z1 1]d-deOao ;

where, R is a 3x3 rotation matrix, and T is a 3x1 translation matrix. [x1 y1 z1] is a location in original...