In order to align different 3D images from different modalities, images should be resized to same actual size.

In our DSA image, each pixel height is 0.3653cm. But in MRA, the height is 0.4cm, so we should resize the images first.

To paint color and align images, converting them to ply format and viewing them in meshlab is convenient.

In matlab, imresize is an ideal function.

The ply format consists of head info following by each pixel location and color. So we should change 3D image to node list and write to file.

Matlab code: https://github.com/clatfd/avm/blob/remote/resize_convertply.m

This is a part of my Capstone Research.