Journal
JOURNAL OF FORENSIC SCIENCES
Volume 64, Issue 2, Pages 422-430Publisher
WILEY
DOI: 10.1111/1556-4029.13894
Keywords
forensic science; shoeprint image; shoeprint retrieval; real crime scene; deep belief network; spatial pyramid matching
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In this study, an automatic and robust crime scene shoeprint retrieval method is proposed. As most shoeprints left at crime scenes are randomly partial and noisy, crime scene shoeprint retrieval is a challenging task. To handle partial, noisy shoeprint images, we employ denoising deep belief network (DBN) to extract local features and use spatial pyramid matching (SPM) to obtain a local-to-global matching score. In this study, 536 query shoeprint images from crime scenes and a large scale database containing 34,768 shoeprint images are used to evaluate the retrieval performance. Experimental results show that the proposed method outperforms other state-of-the-art methods in terms of retrieval accuracy, feature dimension, and retrieval speed. The proposed method achieves a cumulative match score (CMS) of 65.67% at top 10 which is 5.60% higher than the second best performing method.
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