Abstract
This paper presents a powerful feature representation method called Multi-scale Local Binary Patterns for offline signature verification. The multi-scale representation oriented local binary patterns can be obtained by changing the radius R value of Local Binary Patterns(LBP) operator and combining the LBP features at different scales. In this proposed approach the LBP operator is applied at 3 different scales by varying the radius R value and at each scale equal number of pixels are considered for the processing. Finally, by cascading a group of LBP operators at 3 different scales over a signature image with fixed number of pixels at each scale and combining their results, a multi-scale representation LBP can be obtained. This essentially represents nonlocal information. Features fusion is performed by the linear combination of the histogram corresponding to 3 different radii results in a multi resolution (scale) feature vector. Support Vector Machine (SVM) is a well known classifier employed to classify the signature samples. Experimental results on standard datasets like CEDAR and a regional language datasets shows the proposed technique’s performance. A comparative analysis with few well known methods is also presented to demonstrate the performance of proposed technique.
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Acknowledgment
We acknowledge Bharathi R.K for providing a regional language kannada dataset namely MUKOS(Mangalore University Kannada Off-line Signature) dataset.
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Pilar, B., Shekar, B.H., Sunil Kumar, D.S. (2019). Multi-scale Local Binary Patterns- A Novel Feature Extraction Technique for Offline Signature Verification. In: Santosh, K., Hegadi, R. (eds) Recent Trends in Image Processing and Pattern Recognition. RTIP2R 2018. Communications in Computer and Information Science, vol 1037. Springer, Singapore. https://doi.org/10.1007/978-981-13-9187-3_13
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DOI: https://doi.org/10.1007/978-981-13-9187-3_13
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