Improved Adversarial Image Captioning

Mar 27, 2019 Blind Submission readers: everyone
  • Keywords: image captioning, discrete GAN training
  • TL;DR: Image captioning as a conditional GAN training with novel architectures, also study two discrete GAN training methods.
  • Abstract: In this paper we study image captioning as a conditional GAN training, proposing both a context-aware LSTM captioner and co-attentive discriminator, which enforces semantic alignment between images and captions. We investigate the viability of two discrete GAN training methods: Self-critical Sequence Training (SCST) and Gumbel Straight-Through (ST) and demonstrate that SCST shows more stable gradient behavior and improved results over Gumbel ST.
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