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However, existing biometric recognition models are often overly complex, making them difficult to deploy on resource\u2010constrained terminal devices. Inspired by knowledge distillation (KD) for model simplification and deep hashing for fast image retrieval, we propose a new model that achieves lightweight palmprint and finger vein retrieval. This model integrates hash distillation loss, classification distillation loss, and supervised loss from labels within a KD framework. And it improves the retrieval and recognition performance of the lightweight model through the network design. Experimental results demonstrate that this method promotes the performance of the student model on multiple palmprint and finger vein datasets, with retrieval precision and recognition accuracy surpassing several existing advanced hashing methods.<\/jats:p>","DOI":"10.1049\/bme2\/9017371","type":"journal-article","created":{"date-parts":[[2025,4,25]],"date-time":"2025-04-25T08:05:11Z","timestamp":1745568311000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Deep Distillation Hashing for Palmprint and Finger Vein Retrieval"],"prefix":"10.1049","volume":"2025","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-3079-0322","authenticated-orcid":false,"given":"Chenlong","family":"Liu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5186-6504","authenticated-orcid":false,"given":"Lu","family":"Yang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-7282-6847","authenticated-orcid":false,"given":"Wen","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-6934-9784","authenticated-orcid":false,"given":"Yuan","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1820-3490","authenticated-orcid":false,"given":"Fanchang","family":"Hao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"265","published-online":{"date-parts":[[2025,4,25]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11042-016-3987-9"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1145\/3534122"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10462-022-10237-x"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIM.2021.3132332"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIM.2023.3284057"},{"key":"e_1_2_9_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11760-024-03104-5"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/TCSVT.2023.3327012"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.3390\/sym14020258"},{"key":"e_1_2_9_9_2","first-page":"759","article-title":"Enhanced Locality-Sensitive Hashing for Fingerprint Forensics over Large Multi-Sensor Databases","volume":"7","author":"Zhou W.","year":"2021","journal-title":"IEEE Transactions on Big Data"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.neucom.2021.04.026"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.3390\/electronics13081595"},{"key":"e_1_2_9_12_2","unstructured":"HintonG. 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