De-warping of camera captured document images

Vinod, H. C.; Niranjan, S. K.

doi:10.1109/isce.2017.8355534

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…The first category depends on extracting features from text lines, words, and characters. The ridge-based coupled-snakes model was employed among the methods described in [4,5]. These authors used the coupled-snakes model to calculate the baseline, then determined the starting location of each text line.…”

Section: Related Workmentioning

confidence: 99%

An Efficient Method for Document Correction Based on Checkerboard Calibration Pattern

et al. 2022

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Portable digital devices such as PDAs and camera phones are the easiest and most widely used methods to preserve and collect information. Capturing a document image using this method always has warping issues, especially when capturing pages from a book and rolled-up documents. In this article, we propose an effective method to correct the warping of the captured document image. The proposed method uses a checkerboard calibration pattern to calculate the world and image points. A radial distortion algorithm is used to handle the warping problem based on the computed image and world points. The proposed method obtained an error rate of 3% using a document de-warping dataset (CBDAR 2007). The proposed method achieved a high level of quality compared with other previous methods. Our method fixes the problem of warping in document images acquired with different levels of complexity, such as poor lighting, low quality, and different layouts.

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Section: Related Workmentioning

confidence: 99%

An Efficient Method for Document Correction Based on Checkerboard Calibration Pattern

et al. 2022

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Dewarping Document Image Techniques: Survey and Comparative Study

Wagdy

Amin

Ibrahim

2020

Int. J. Image Grap.

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In recent years, everyone has his/her own handheld digital devices such as PDAs and camera phones which are used to capture any documents, for example, posters, magazine and books. This is the simplest way to disseminating and collecting information. Unfortunately, the snapshot of this document in an uncontrolled environment has been suffering from different perspectives and geometric distortions, especially when a picture is taken from rolled document, page of thick book, multi-folded documents and crumpled pages. In such cases, the most common distortion appeared is warping text lines. In this paper, we present a survey and a comparative study of document image dewarping techniques which aim to solve the curled lines and geometric distortion problems. We introduce a new classification of the available dewarping document image techniques and investigate their available datasets. Finally, we present the evaluation metric to test these techniques.

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De-warping of camera captured document images

Cited by 2 publications

References 13 publications

An Efficient Method for Document Correction Based on Checkerboard Calibration Pattern

An Efficient Method for Document Correction Based on Checkerboard Calibration Pattern

Dewarping Document Image Techniques: Survey and Comparative Study

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