2021

UniTAB: Unifying Text and Box Outputs for Grounded Vision-Language Modeling

Yang, Zhengyuan, Gan, Zhe, Wang, Jianfeng et al.

Understand

We propose UniTAB that Unifies Text And Box outputs for grounded vision-language (VL) modeling.

  • Grounded VL tasks such as grounded captioning require the model to generate a text description and align predicted words with object regions.
  • To achieve this, models must generate desired text and box outputs together, and meanwhile indicate the alignments between words and boxes.
  • In contrast to existing solutions that use multiple separate modules for different outputs, UniTAB represents both text and box outputs with a shared token sequence, and introduces a special <obj> token to naturally indicate word-box alignments in the sequence.

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