DTGAN: Dual Attention Generative Adversarial Networks for Text-to-Image Generation

• URL: http://arxiv.org/abs/2011.02709v3
• Date: Sat, 21 Nov 2020 23:59:25 GMT
• Title: DTGAN: Dual Attention Generative Adversarial Networks for Text-to-Image Generation
• Authors: Zhenxing Zhang and Lambert Schomaker
• Abstract summary: The Dual Attention Generative Adversarial Network (DTGAN) can synthesize high-quality and semantically consistent images. The proposed model introduces channel-aware and pixel-aware attention modules that can guide the generator to focus on text-relevant channels and pixels. A new type of visual loss is utilized to enhance the image resolution by ensuring vivid shape and perceptually uniform color distributions of generated images.
• Score: 8.26410341981427
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Most existing text-to-image generation methods adopt a multi-stage modular architecture which has three significant problems: 1) Training multiple networks increases the run time and affects the convergence and stability of the generative model; 2) These approaches ignore the quality of early-stage generator images; 3) Many discriminators need to be trained. To this end, we propose the Dual Attention Generative Adversarial Network (DTGAN) which can synthesize high-quality and semantically consistent images only employing a single generator/discriminator pair. The proposed model introduces channel-aware and pixel-aware attention modules that can guide the generator to focus on text-relevant channels and pixels based on the global sentence vector and to fine-tune original feature maps using attention weights. Also, Conditional Adaptive Instance-Layer Normalization (CAdaILN) is presented to help our attention modules flexibly control the amount of change in shape and texture by the input natural-language description. Furthermore, a new type of visual loss is utilized to enhance the image resolution by ensuring vivid shape and perceptually uniform color distributions of generated images. Experimental results on benchmark datasets demonstrate the superiority of our proposed method compared to the state-of-the-art models with a multi-stage framework. Visualization of the attention maps shows that the channel-aware attention module is able to localize the discriminative regions, while the pixel-aware attention module has the ability to capture the globally visual contents for the generation of an image.

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