arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.2274cs.GRcs.AI
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体数据集的神经网络分类器

A Neural Network Classifier of Volume Datasets

University of Siegen(锡根大学)

Dženan Zukić, Christof Rezk-Salama, Andreas Kolb

摘要:

许多最先进的可视化技术必须针对特定类型的数据集、其模态(CT、MRI等),记录的对象或解剖区域(头部、脊柱、腹部等)以及与数据采集过程相关的其它参数。虽然部分信息(成像模态和采集序列)可以从与体积扫描一起存储的元数据中获得,但存在未明确存储的重要信息(解剖区域、跟踪化合物)。此外,元数据可能不完整、不适当或只是缺失。本文提出了一种新的和简单的方法来确定从先前定义的类别的数据集的类型。基于数据集的强度和梯度幅度的2D直方图被用作神经网络的输入,该神经网络将其分类为训练所用的几个类别之一。所提出的方法是一个重要的构建块的可视化系统被自主使用的非专家。该方法已在80个数据集上进行了测试,分为3个类和一个“休息”类。一个重要的结果是系统在仅用该类的一个数据集进行训练后将数据集分类到特定类中的能力。该方法的其他优点是其易于实现和高计算性能。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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