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Vol. 32, No. 8(2), S&M2292

ISSN (print) 0914-4935
ISSN (online) 2435-0869
Sensors and Materials
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Sensors and Materials, Volume 31, Number 5(1) (2019)
Copyright(C) MYU K.K.
pp. 1489-1498
S&M1873 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2019.2268
Published: May 16, 2019

A Study of the Shearing Section Trace Matching Technology Based on Elastic Shape Metric and Deep Learning [PDF]

Nan Pan, Yi Liu, Dilin Pan, Xing Shen, and Xin Wang

(Received April 16, 2018; Accepted March 28, 2019)

Keywords: linear trace recognition, multiscale registration, elastic shape metric, triplet loss function, convolution neural network

The practical application of shearing linear traces in a crime scene is severely restricted because of complex shapes and markedly high randomness. In this study, a more efficient matching model for clamp cutting surface traces is proposed. To this end, key theories and algorithms are further studied. The overall research approaches are as follows: the isolated forest algorithm is used for the processing of abnormal signals detected, followed by a multiscale registration framework to extract trace curve profiles, and the square speed function optimization elastic shape metric algorithm to map the profiles into an embedding. A parametric shared conjoined triple deep learning model is used, which is suitable for trace features and optimizing the triplet selection and data augmentation strategies. This system is trained by minimizing a triplet loss function, so that a similarity measure is defined by the L2 distance in this embedding. Finally, the trained model is used for similarity matching for the test set. The matching effect is continuously evaluated through experiments to provide investigators an efficient string detection method for traces.

Corresponding author: Nan Pan


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Cite this article
Nan Pan, Yi Liu, Dilin Pan, Xing Shen, and Xin Wang, A Study of the Shearing Section Trace Matching Technology Based on Elastic Shape Metric and Deep Learning, Sens. Mater., Vol. 31, No. 5, 2019, p. 1489-1498.



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