Abstract
Feature extraction of medical images is a challenging task due to variation in modalities and imaged objects (organs, tissues and specific pathologies). This article presents a simple feature descriptor, local diagonal Laplacian pattern (LDLP), devised on the idea of local diagonal extrema pattern (LDEP). LDEP is implemented using first-order diagonal derivatives, whereas LDLP uses Laplacian operation. In order to reduce computational complexity, the intensities at each diagonal element are correlated to the rest of the three diagonal elements together with the centre pixel. Furthermore, the corner elements are compared with the centre pixel to improve the quality of feature description. In addition, the dimension of the pattern is lowered by a half. LDLP is applied to various MR, CT images of the TCIA database and CT images of the NEMA database that results in better feature description at less computational cost.
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Yelampalli, P.K.R., Nayak, J. (2018). Local Diagonal Laplacian Pattern A New MR and CT Image Feature Descriptor. In: Saeed, K., Chaki, N., Pati, B., Bakshi, S., Mohapatra, D. (eds) Progress in Advanced Computing and Intelligent Engineering. Advances in Intelligent Systems and Computing, vol 563. Springer, Singapore. https://doi.org/10.1007/978-981-10-6872-0_7
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