面向高光谱影像分类的生成式对抗网络

为了提高高光谱影像分类精度，提出了一种基于生成式对抗网络的高光谱影像分类方法。生成式对抗网络由生成器、判别器和分类器3部分组成，其中生成器用于模拟高光谱样本的数据分布，生成特定类别的样本；判别器是一个二值分类器，用于判断输入的样本是否为真实数据；分类器用于对输入的样本进行分类。利用反向传播算法依次更新生成器、判别器和分类器的网络参数使损失函数最小，从而达到训练网络的目的。生成器和判别器能够模拟高光谱影像的样本分布来辅助训练分类器，因此能够提高高光谱影像的分类精度。分别采用Pavia大学和Salinas高光谱数据集进行分类试验，试验结果表明提出的分类方法能够在小样本条件下提高高光谱影像的分类精度。

Generative adversarial networks for hyperspectral image classification

In order to improve the classification accuracy of hyperspectral images,a novel hyperspectral image classification method based on generative adversarial network is proposed. The proposed generative adversarial network consists of generator,discriminator and classifier,in which the generator is used to approximate the data distribution of hyperspectral samples and generate specific categories of samples. The discriminator is a binary classifier to determine whether the input samples are real data. And the classifier is used to classify the input samples. The parameters of generator,discriminator and classifier are updated sequentially by back propagation algorithm to minimize the loss function,so as to achieve the goal of training the network. Generators and discriminators can approximate the sample distribution of hyperspectral images to assist the training of the classifier. Therefore,they can effectively improve the classification accuracy of hyperspectral images. Pavia University and Salinas hyperspectral data sets are used for classification experiments respectively. The experimental results show that the proposed classification method can effectively improve the classification accuracy of hyperspectral images with only small samples.