Enhance to Read Better: An Improved Generative Adversarial Network for Handwritten Document Image Enhancement

Maria J. Danford

Documents applied for handwritten textual content recognition are usually impacted by degradation. For occasion, historic paperwork might be impacted by corrupted textual content, dust, or wrinkles. Incorrect scanning processes or watermarks and stamps might also cause complications. Classical picture recovery strategies attempt to reverse the degradation outcome. On the other […]

Documents applied for handwritten textual content recognition are usually impacted by degradation. For occasion, historic paperwork might be impacted by corrupted textual content, dust, or wrinkles. Incorrect scanning processes or watermarks and stamps might also cause complications. Classical picture recovery strategies attempt to reverse the degradation outcome. On the other hand, the versions can deteriorate the textual content though cleansing the picture.

Writing. Image credit: StockSnap via Pixabay, CC0 Public Domain

Writing. Image credit: StockSnap by way of Pixabay, CC0 General public Domain

Hence, a group of scientists proposes a deep mastering design that learns its parameters not only from handwritten visuals but also from the related textual content. It is primarily based on generative adversarial networks (GANs) and has a recognizer that assesses the readability of the recovered picture. Experiments with degraded Arabic and Latin paperwork proved the effectiveness of the proposed design. It is also revealed that instruction the recognizer progressively from the degraded domain to the clean versions improves the recognition general performance.

Handwritten doc visuals can be extremely impacted by degradation for different causes: Paper ageing, each day-lifetime situations (wrinkles, dust, etc.), undesirable scanning approach and so on. These artifacts raise several readability challenges for existing Handwritten Textual content Recognition (HTR) algorithms and severely devalue their effectiveness. In this paper, we propose an conclude to conclude architecture primarily based on Generative Adversarial Networks (GANs) to get better the degraded paperwork into a clean and readable form. Not like the most very well-recognized doc binarization solutions, which attempt to improve the visual good quality of the degraded doc, the proposed architecture integrates a handwritten textual content recognizer that promotes the created doc picture to be a lot more readable. To the very best of our understanding, this is the initially function to use the textual content info though binarizing handwritten paperwork. Considerable experiments performed on degraded Arabic and Latin handwritten paperwork display the usefulness of integrating the recognizer inside the GAN architecture, which improves both of those the visual good quality and the readability of the degraded doc visuals. Moreover, we outperform the point out of the art in H-DIBCO 2018 obstacle, right after fine tuning our pre-trained design with synthetically degraded Latin handwritten visuals, on this activity.

Analysis paper: Khamekhem Jemni, S., Souibgui, M. A., Kessentini, Y., and Fornés, A., “Enhance to Read through Superior: An Enhanced Generative Adversarial Community for Handwritten Document Image Enhancement”, 2021. Link: https://arxiv.org/abs/2105.12710


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