DeCNT: Deep Deformable CNN for Table Detection

IEEE Access

Sheraz Ahmed¹  Stefan Agne¹  Shoaib Ahmed Siddiqui¹  Andreas Dengel¹  Muhammad Imran Malik² 

[1] German Research Center for Artificial Intelligence, Kaiserslautern, Germany;School of Electrical Engineering and Computer Science, National University of Sciences and Technology, Islamabad, Pakistan;

关键词: Deep learning;    representation learning;    convolutional neural networks;    object detection;    deformable convolution;    table detection;   

DOI  :  10.1109/ACCESS.2018.2880211

来源: DOAJ

【 摘 要 】

This paper presents a novel approach for the detection of tables present in documents, leveraging the potential of deep neural networks. Conventional approaches for table detection rely on heuristics that are error prone and specific to a dataset. In contrast, the presented approach harvests the potential of data to recognize tables of arbitrary layout. Most of the prior approaches for table detection are only applicable to PDFs, whereas, the presented approach directly works on images making it generally applicable to any format. The presented approach is based on a novel combination of deformable CNN with faster R-CNN/FPN. Conventional CNN has a fixed receptive field which is problematic for table detection since tables can be present at arbitrary scales along with arbitrary transformations (orientation). Deformable convolution conditions its receptive field on the input itself allowing it to mold its receptive field according to its input. This adaptation of the receptive field enables the network to cater for tables of arbitrary layout. We evaluated the proposed approach on two major publicly available table detection datasets: ICDAR-2013 and ICDAR-2017 POD. The presented approach was able to surpass the state-of-the-art performance on both ICDAR-2013 and ICDAR-2017 POD datasets with a F-measure of 0.994 and 0.968, respectively, indicating its effectiveness and superiority for the task of table detection.

【 授权许可】

Unknown