Abstract
The document images captured through mobile camera get warped due to the curved surfaces like an open thick book page, notices posted on a cylindrical lamppost or a paper hanging from a notice board attached at top-middle. The very recent state of the art techniques for dewarping, work mostly for document images containing alphabetic script like English; these cannot handle all the variety of warping. This paper proposed a method for dewarping of single folded warped documentĀ images containing alpha-syllabary script like Bangla. Here the information of top line and baseline increase the robustness of the algorithm. Unlike other related methods, this work has not used any additional information like focal length, distance from the cameraĀ or view angle. Experimental evaluation with the collected dataset shows promising results.
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References
Bukhari, S.S.,Ā Shafait, F., Breuel, T.M.: Text-line extraction using a convolution of isotropic gaussian filter with a set of line filters. In: 2011 International Conference on Document Analysis and Recognition, pp. 579ā583, September 2011
Bukhari, S.S.,Ā Shafait, F., Breuel, T.M.: Dewarping of document images using coupled-snakes. In: Proceedings of Third International Workshop on Camera-Based Document Analysis and Recognition, pp. 34ā41 (2009)
Bukhari, S.S.,Ā Shafait, F., Breuel, T.M.: Coupled snakelets for curled text-line segmentation from warped document images. Int. J. Doc. Anal. Recognit. (IJDAR) 16(1), 33ā53 (2013)
Cao, H., Ding, X., Liu, C.: A cylindrical surface model to rectify the bound document image. In: Proceedings Ninth IEEE International Conference on Computer Vision, vol. 1, pp. 228ā233, October 2003
Chaudhuri, B.B., Pal, U.:Ā An ocr system to read two indian language scripts: Bangla and devnagari (hindi). In: Proceedings of the Fourth International Conference on Document Analysis and Recognition, vol.Ā 2, pp. 1011ā1015, August 1997
Garai, A.,Ā Mandal, S.,Ā Biswas, S.,Ā Chaudhuri, B.B.: Automatic dewarping of camera captured born-digital bangla document images. In: Ninth International Conference on Advances in Pattern Recognition (ICAPR 2017), December 2017
Gatos, B.,Ā Pratikakis, I.,Ā Ntirogiannis, K.:Ā Segmentation based recovery of arbitrarily warped document images. In: Ninth International Conference on Document Analysis and Recognition (ICDAR 2007), vol.Ā 2, pp. 989ā993, September 2007
He, Y.,Ā Pan, P.,Ā Xie, S.,Ā Sun, J.,Ā Naoi, S.:Ā A book dewarping system by boundary-based 3d surface reconstruction. In: 2013 12th International Conference on Document Analysis and Recognition, pp. 403ā407, August 2013
Kim, B.S., Koo, H.I., Cho, N.I.: Document dewarping via text-line based optimization. Pattern Recognit. 48(11), 3600ā3614 (2015)
Liang, J., DeMenthon, D., Doermann, D.: Geometric rectification of camera-captured document images. IEEE Trans. Pattern Anal. Mach. Intell. 30(4), 591ā605 (2008). April
Changsong Liu, Y., Zhang, B.W., Ding, X.: Restoring camera-captured distorted document images. Int. J. Doc. Anal. Recognit. (IJDAR) 18(2), 111ā124 (2015)
Lu, S., Chen, B.M., Ko, C.C.: Perspective rectification of document images using fuzzy set and morphological operations. Image Vis. Comput. 23(5), 541ā553 (2005)
Lu, S., Tan, C.L.: Document flattening through grid modeling and regularization. In: 18th International Conference on Pattern Recognition (ICPRā06), vol.Ā 1, pp. 971ā974 (2006)
Meng, G., Pan, C., Xiang, S., Duan, J.: Metric rectification of curved document images. IEEE Trans. Pattern Anal. Mach. Intell. 34(4), 707ā722 (2012). April
Roy, P.P., Pal, U., LladĆ³s, J.: Text line extraction in graphical documents using background and foreground information. Int. J. Doc. Anal. Recognit. (IJDAR) 15(3), 227ā241 (2012)
Sauvola, J., Pietikinen, M.: Adaptive document image binarization. Pattern Recognit. 33(2), 225ā236 (2000)
Stamatopoulos, N., Gatos, B., Pratikakis, I., Perantonis, S.J.: Goal-oriented rectification of camera-based document images. IEEE Trans. Image Process. 20(4), 910ā920 (2011). April
Ulges, A.,Ā Lampert, C.H., Breuel, T.M.: Document image dewarping using robust estimation of curled text lines. In: Eighth International Conference on Document Analysis and Recognition (ICDARā05), vol. 2, pp. 1001ā1005, August 2005
You, S.,Ā Matsushita, Y.,Ā Sinha, S.,Ā Bou, Y.,Ā Ikeuchi, K.:Ā Multiview rectification of folded documents. IEEE Trans. Pattern Anal. Mach. Intell. PP(99), 1ā1 (2017)
Zhang, L.,Ā Tan, C.L.: Warped image restoration with applications to digital libraries. In: Eighth International Conference on Document Analysis and Recognition (ICDARā05), vol. 1, pp. 192ā196, August 2005
Zhang, L., Tan, C.L.: Restoringwarped document images using shape-from-shading and surface interpolation. In: 18th International Conference on Pattern Recognition (ICPRā06), vol.Ā 1, pp. 642ā645 (2006)
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Garai, A., Biswas, S. (2020). Dewarping of Single-Folded Camera Captured Bangla Document Images. In: Das, A., Nayak, J., Naik, B., Pati, S., Pelusi, D. (eds) Computational Intelligence in Pattern Recognition. Advances in Intelligent Systems and Computing, vol 999. Springer, Singapore. https://doi.org/10.1007/978-981-13-9042-5_55
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DOI: https://doi.org/10.1007/978-981-13-9042-5_55
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