A Neural Network Classifier of Volume Datasets

Details A Neural Network Classifier of Volume Datasets A Neural Network Classifier of Volume Datasets

2009-06-12

arxiv.org/abs/0906.2274v1

International Conference on Computer Graphics and Artificial Intelligence, Proceedings (2009) 53-62

Computer Science

Graphics

10 pages, 10 figures, 1 table, 3IA conference http://3ia.teiath.gr/

Scientific paper

Many state-of-the art visualization techniques must be tailored to the specific type of dataset, its modality (CT, MRI, etc.), the recorded object or anatomical region (head, spine, abdomen, etc.) and other parameters related to the data acquisition process. While parts of the information (imaging modality and acquisition sequence) may be obtained from the meta-data stored with the volume scan, there is important information which is not stored explicitly (anatomical region, tracing compound). Also, meta-data might be incomplete, inappropriate or simply missing. This paper presents a novel and simple method of determining the type of dataset from previously defined categories. 2D histograms based on intensity and gradient magnitude of datasets are used as input to a neural network, which classifies it into one of several categories it was trained with. The proposed method is an important building block for visualization systems to be used autonomously by non-experts. The method has been tested on 80 datasets, divided into 3 classes and a "rest" class. A significant result is the ability of the system to classify datasets into a specific class after being trained with only one dataset of that class. Other advantages of the method are its easy implementation and its high computational performance.

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