本文主要運用 Pathak et al. [13] 和 Iizuka et al. [6] 的基本思想，重新建構一個影像填補的生成對抗網路。在硬體設備運算能力的侷限下，我們建置出一個層數較少的神經網路模型，用來達成某些較為簡單的影像填補任務，例如填補主題較單一而且遺失區域比例較低的情況，而本文的主要目標是進行影像中心遺失小區域時的填補工作。為了實現這個目標，我們採用 Goodfellow et al. [4] 提出的生成對抗網路的想法，運用生成網路與對抗網路的相互競爭以加強填補的效能。更明確地說，我們使用卷積層來建構網路，其中生成網路的部分使用 Iizuka et al. [6] 所提到的擴張卷積 [17]。同時，我們採用了 Ioffe 和 Szegedy [7] 的想法，除了最後一層外，所有網路的每一層後都添加標準化層以增強網路的訓練效果。最後模擬實驗結果顯示，我們的生成對抗網路模型可以相當有效地達成主要的填補任務。;Based on the works of Pathak et al. [13] and Iizuka et al. [6], in this thesis, we introduce a simple generative adversarial network approach for image inpainting. Considering the limitation of computational capacity, we build a simplified model which is able to reconstruct lost or deteriorated parts of images with single context and small missing region. In order to generate the image content of missing region, we mainly employ the generative adversarial network approach proposed by Goodfellow et al. [4]. More specifically, the proposed neural network consists of convolutional layers, where the dilated convolution is used in the generative network. In addition, except the output layer, each layer is equipped with a normalization layer [7] to enhance the overall efficiency of the network. Numerical experiments are performed to demonstrate the good performance of the simplified generative adversarial network for image inpainting.
