CustusX  2019.01.24-dev+develop.7aace4
An IGT application
PNN Reconstuction Plugin

Overview

The acquisition plugin enables acquisition of various data streams.

PNN US Reconstruction Algorithm

PNN - Pixel Nearest Neighbor reconstruction

Pixel Nearest Neighbor is a simple reconstruction algorithm, and works by iterating over each image plane, and transforming it into the voxel space. In essence, it asks the question “I have this data, where should it go?”. In concrete words, for each pixel on the image plane, the nearest voxel in the voxel grid is found, and the pixel value is put into that voxel. If the voxel already has a value, different approaches are possible: Taking the average, taking the maximum, taking the most recent value, or taking the first value. Usually this is followed by a Hole Filling Step, where the voxels that have no value get a value from the neighboring voxels.