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arXiv 1809.01436cs.CV
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改进的类概率估计多样性协同训练高光谱图像分类

Modified Diversity of Class Probability Estimation Co-training for Hyperspectral Image Classification

Xidian University(西安电子科技大学)

Yan Ju, Lingling Li, Licheng Jiao, Zhongle Ren, Biao Hou, Shuyuan Yang

摘要:

针对高光谱图像分类问题,传统的监督学习方法由于训练训练数据数量有限且类别不均衡,无法保证学习特征的区分性。在本文中,我们提出了一种改进的类概率估计(MDCPE)的多样性与两个深神经网络学习光谱空间特征的HSI分类。在联合训练阶段,使用递归神经网络(RNN)和卷积神经网络(CNN)作为两个学习器,从标记和未标记的数据中提取特征。基于提取的特征,MDCPE选择最可信的样本更新初始标记数据相结合的k-means聚类与传统的类概率估计(DCPE)的协同训练的多样性。通过这种方式,MDCPE可以保持新的标记数据类平衡,并为少数和多数类提取区分特征。在测试过程中,分类结果由两个学习者共同决策得到。实验结果表明,提出的半监督协同训练方法可以充分利用未标记信息,提高学习者的通用性,在Salinas、Pavia University和Pavia Center三个广泛使用的数据集上均取得了良好的准确率。

英文摘要:

Due to the limited amount and imbalanced classes of labeled training data, the conventional supervised learning can not ensure the discrimination of the learned feature for hyperspectral image (HSI) classification. In this paper, we propose a modified diversity of class probability estimation (MDCPE) with two deep neural networks to learn spectral-spatial feature for HSI classification. In co-training phase, recurrent neural network (RNN) and convolutional neural network (CNN) are utilized as two learners to extract features from labeled and unlabeled data. Based on the extracted features, MDCPE selects most credible samples to update initial labeled data by combining k-means clustering with the traditional diversity of class probability estimation (DCPE) co-training. In this way, MDCPE can keep new labeled data class-balanced and extract discriminative features for both the minority and majority classes. During testing process, classification results are acquired by co-decision of the two learners. Experimental results demonstrate that the proposed semi-supervised co-training method can make full use of unlabeled information to enhance generality of the learners and achieve favorable accuracies on all three widely used data sets: Salinas, Pavia University and Pavia Center.

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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