Author: Lam, Raymond
Title: Study of the capability of generative adversarial network based models in image synthesis
Advisors: Chung, Fu Lai Korris (COMP)
Degree: M.Sc.
Year: 2019
Subject: Hong Kong Polytechnic University -- Dissertations
Machine learning
Neural networks (Computer science)
Image processing -- Digital techniques
Department: Department of Computing
Pages: ix, 64 pages : color illustrations
Language: English
Abstract: There has been having dramatically growth of research in Generative Adversarial Networks (GANs) since its introduction in 2014. GANs has been applied to various applications with impressive performance such as language processing and computer vision. Among those applications of GANs, image synthesis is perhaps the most popular and well-studied area including, but not limited to, image-to-image translation, image editing, image inpainting, and texture synthesis. GANs consist of two competitive deep neural networks called generator and discriminator. Due to the competitive training manner and the power of two deep neural networks, GANs are capable of producing reasonable and interesting images. It has already been demonstrated with great potential in image synthesis in different researches. GANs were only capable of generating black-and-white, blurry and small images in the past but now had been evolved to be capable of generating colorful, realistic and high-resolution images that are hardly be distinguished from the real one. In this thesis, we study and explore the image synthesis capability of Generative Adversarial Network (GAN) as motivated by its impressive but cherry pick performance. We proceed with experiments with taxonomy conditions of datasets provided, e.g. object colors, object sizes, and classes, so as to reveal how different datasets affect the results. The experiments include unpaired image-to-image translation model, Cycle-consistent Adversarial Networks (CycleGAN), and conditional image synthesis with Auxiliary Classifier GANs (ACGAN). We discuss the results and carry out the evaluations as well as point out the possible research directions of GAN in image synthesis.
Rights: All rights reserved
Access: restricted access

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Please use this identifier to cite or link to this item: https://theses.lib.polyu.edu.hk/handle/200/10150