arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2407.08993cs.CV
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任务驱动的文档扫描图像单图像超分辨率重建

Task-driven single-image super-resolution reconstruction of document scans

Silesian University of Technology(西里西亚工业大学)

Maciej Zyrek, Michal Kawulok

AI总结:

本文提出任务驱动的单图像超分辨率深度网络,通过融合文本检测与图像相似性的多任务损失改进文档扫描的OCR预处理。

摘要:

超分辨率重建旨在从低分辨率观测结果生成具有高空间分辨率的图像。以深度学习为支撑的最先进超分辨率技术能够获得视觉质量出众的结果,但很少有人验证这些结果是否能成为特定计算机视觉应用的有价值来源。本文研究了将超分辨率用作预处理步骤以改进文档扫描图像光学字符识别的可能性。为此,我们提出以任务驱动的方式训练用于单图像超分辨率的深度网络,使其更好地适应文本检测目的。由于局限于特定任务的问题具有严重的不适定性,我们引入了一种多任务损失函数,该函数包含与文本检测相关的分量,并结合由图像相似性引导的分量。本文报告的结果令人鼓舞,构成了面向真实世界文档图像超分辨率的重要一步。

英文摘要:

Super-resolution reconstruction is aimed at generating images of high spatial resolution from low-resolution observations. State-of-the-art super-resolution techniques underpinned with deep learning allow for obtaining results of outstanding visual quality, but it is seldom verified whether they constitute a valuable source for specific computer vision applications. In this paper, we investigate the possibility of employing super-resolution as a preprocessing step to improve optical character recognition from document scans. To achieve that, we propose to train deep networks for single-image super-resolution in a task-driven way to make them better adapted for the purpose of text detection. As problems limited to a specific task are heavily ill-posed, we introduce a multi-task loss function that embraces components related with text detection coupled with those guided by image similarity. The obtained results reported in this paper are encouraging and they constitute an important step towards real-world super-resolution of document images.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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