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Authors: Dinh Nguyen 1 ; Mathieu Delalandre 2 ; Donatello Conte 2 and The Pham 3

Affiliations: 1 Tours University, Tours City, France, Hong Duc University, Thanh Hoa and Vietnam ; 2 Tours University, Tours City and France ; 3 Hong Duc University, Thanh Hoa and Vietnam

Keyword(s): Text Detection, LoG, Blobs, Key-points, Real-time, Estimators, DoG, Fast Gaussian Filtering, Scale-space, Stroke Model, Groundtruthing, Performance Characterization, Repeatability.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Features Extraction ; Image and Video Analysis

Abstract: This paper presents a state-of-the-art and a performance evaluation of real-time text detection methods, having particular focus on the family of Laplacian of Gaussian (LoG) operators with scale-invariance. The computational complexity of operators is discussed and an adaptation to text detection is obtained through the scale-space representation. In addition, a groundtruthing process and a characterization protocol are proposed, performance evaluation is driven with repeatability and processing time. The evaluation highlights a near-exact approximation with real-time operators at one to two orders of magnitude of execution time. The real-time operators are adapted to recent camera devices to process high resolution images. Perspectives are provided for operator robustness, optimization and characterization of the detection strategy.

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Paper citation in several formats:
Nguyen, D.; Delalandre, M.; Conte, D. and Pham, T. (2019). Performance Evaluation of Real-time and Scale-invariant LoG Operators for Text Detection. In Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 5: VISAPP, ISBN 978-989-758-354-4; ISSN 2184-4321, pages 344-353. DOI: 10.5220/0007361503440353

@conference{visapp19,
author={Dinh Nguyen. and Mathieu Delalandre. and Donatello Conte. and The Pham.},
title={Performance Evaluation of Real-time and Scale-invariant LoG Operators for Text Detection},
booktitle={Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 5: VISAPP,},
year={2019},
pages={344-353},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007361503440353},
isbn={978-989-758-354-4},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 5: VISAPP,
TI - Performance Evaluation of Real-time and Scale-invariant LoG Operators for Text Detection
SN - 978-989-758-354-4
IS - 2184-4321
AU - Nguyen, D.
AU - Delalandre, M.
AU - Conte, D.
AU - Pham, T.
PY - 2019
SP - 344
EP - 353
DO - 10.5220/0007361503440353