arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1906.06013cs.CV
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面向自然场景的端到端文本识别

Towards End-to-End Text Spotting in Natural Scenes

Northwestern Polytechnical University(西北工业大学);National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology(空天地海一体化大数据应用技术国家工程实验室);Samsung Research(三星研究院);Monash University(莫纳什大学);The University of Adelaide(阿德莱德大学)

Peng Wang, Hui Li, Chunhua Shen

摘要:

自然场景图像中的文本识别对于许多图像理解任务都是非常重要的。它包括两个子任务:文本检测和识别。在这项工作中,我们提出了一个统一的网络,它可以同时定位和识别文本,避免中间过程,如图像裁剪和特征重新计算,单词分离和字符分组。与现有的将文本检测和识别视为两个不同任务并逐个解决的方法相比,所提出的框架同时解决了这两个任务。整个框架可以进行端到端的训练,并且能够处理任意形状的文本。卷积特征仅计算一次,并由检测和识别模块共享。通过多任务训练,学习到的特征变得更具区分力,并提高了整体表现。通过将$2$ D注意力模型应用于单词识别,可以鲁棒地处理文本的不规则性。它提供了每个字符的空间位置,这不仅有助于文字识别中的局部特征提取,而且还指示了一个方向角,以细化文本定位。我们提出的方法已经达到了国家的最先进的性能在几个标准的文本定位基准,包括规则和不规则的。

英文摘要:

Text spotting in natural scene images is of great importance for many image understanding tasks. It includes two sub-tasks: text detection and recognition. In this work, we propose a unified network that simultaneously localizes and recognizes text with a single forward pass, avoiding intermediate processes such as image cropping and feature re-calculation, word separation, and character grouping. In contrast to existing approaches that consider text detection and recognition as two distinct tasks and tackle them one by one, the proposed framework settles these two tasks concurrently. The whole framework can be trained end-to-end and is able to handle text of arbitrary shapes. The convolutional features are calculated only once and shared by both detection and recognition modules. Through multi-task training, the learned features become more discriminate and improve the overall performance. By employing the $2$D attention model in word recognition, the irregularity of text can be robustly addressed. It provides the spatial location for each character, which not only helps local feature extraction in word recognition, but also indicates an orientation angle to refine text localization. Our proposed method has achieved state-of-the-art performance on several standard text spotting benchmarks, including both regular and irregular ones.

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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