Multi-Sentence Auxiliary Adversarial Networks for Fine-Grained Text-to-Image Synthesis

Due to the development of Generative Adversarial Networks (GANs), significant progress has been achieved in text-to-image synthesis task. However, most previous works have only focus on learning the semantic consistency between paired images and sentences, without exploring the semantic correlation between different yet related sentences that describe the same image, which leads to significant visual variation among the synthesized images. Accordingly, in this article, we propose a new method for text-to-image synthesis, dubbed Multi-sentence Auxiliary Generative Adversarial Networks (MA-GAN); this approach not only improves the generation quality but also guarantees the generation similarity of related sentences by exploring the semantic correlation between different sentences describing the same image. More specifically, we propose a Single-sentence Generation and Multi-sentence Discrimination (SGMD) module that explores the semantic correlation between multiple related sentences in order to reduce the variation between their generated images and enhance the reliability of the generated results. Moreover, a Progressive Negative Sample Selection mechanism (PNSS) is designed to mine more suitable negative samples for training, which can effectively promote detailed discrimination ability in the generative model and facilitate the generation of more fine-grained results. Extensive experiments on Oxford-102 and CUB datasets reveal that our MA-GAN significantly outperforms the state-of-the-art methods.