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Towards Weakly-Supervised Text Spotting using a Multi-Task Transformer

11 February 2022
Yair Kittenplon
I. Lavi
Sharon Fogel
Yarin Bar
R. Manmatha
Pietro Perona
    ViT
ArXiv (abs)PDFHTML
Abstract

Text spotting end-to-end methods have recently gained attention in the literature due to the benefits of jointly optimizing the text detection and recognition components. Existing methods usually have a distinct separation between the detection and recognition branches, requiring exact annotations for the two tasks. We introduce TextTranSpotter (TTS), a transformer-based approach for text spotting and the first text spotting framework which may be trained with both fully- and weakly-supervised settings. By learning a single latent representation per word detection, and using a novel loss function based on the Hungarian loss, our method alleviates the need for expensive localization annotations. Trained with only text transcription annotations on real data, our weakly-supervised method achieves competitive performance with previous state-of-the-art fully-supervised methods. When trained in a fully-supervised manner, TextTranSpotter shows state-of-the-art results on multiple benchmarks \footnote {Our code will be publicly available upon publication.

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