{"doi":"10.1364/boe.547944","title":"Recording dynamic facial micro-expressions with a multi-focus camera array","abstract":"We present a multi-camera array for capturing dynamic high-resolution videos of the human face. Compared to traditional single-camera configurations, our array of 54 individual cameras allows stitching of high-resolution composite video frames (709 megapixels total). In our novel multi-focus strategy, each camera in the array focuses on a unique object plane to resolve non-planar surfaces at a higher resolution than a standard single-lens camera design. By overcoming the standard resolution and depth-of-field (DOF) tradeoffs, we use our array design to capture video of macroscopically curved surfaces such as the human face at a lateral resolution of 26.14 ± 5.8 µm across a composite DOF of ∼43 mm that covers the entire face (85 cm 2 + FOV). Compared to a single-focus configuration, this is almost a 10-fold increase in effective DOF. We demonstrate how our multi-focus camera array can capture dynamic facial expressions at microscopic resolution with relevance in several biomedical applications.","journal":"Biomedical Optics Express","year":2024,"id":449813,"datarank":0.26876392038420827,"base_score":1.791759469228055,"endowment":1.791759469228055,"self_citation_contribution":0.26876392038420827,"citation_network_contribution":0.0,"self_endowment_contribution":0.26876392038420827,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":5,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9562,"is_data_producer":true,"deposit_databanks":{"figshare":["10.6084/m9.figshare.27722001"]},"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2024-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1270101,"name":"Weiheng Tang","orcid":null,"position":1,"is_corresponding":false},{"id":1270102,"name":"Ramana Balla","orcid":null,"position":2,"is_corresponding":false},{"id":1269621,"name":"Xi Yang","orcid":"0000-0002-0632-0393","position":3,"is_corresponding":false},{"id":588210,"name":"Amey Chaware","orcid":"0000-0003-1548-0740","position":4,"is_corresponding":false},{"id":588211,"name":"Kanghyun Kim","orcid":"0000-0002-4557-9525","position":5,"is_corresponding":false},{"id":1230804,"name":"Clare B. Cook","orcid":null,"position":6,"is_corresponding":false},{"id":1035028,"name":"Aurélien Bègue","orcid":"0000-0002-6863-2210","position":7,"is_corresponding":false},{"id":1099647,"name":"Clay Dugo","orcid":"0009-0004-6499-9068","position":8,"is_corresponding":false},{"id":562993,"name":"Mark Harfouche","orcid":"0000-0002-4657-4603","position":9,"is_corresponding":false},{"id":304356,"name":"Kevin C. Zhou","orcid":"0000-0002-0351-8812","position":10,"is_corresponding":false},{"id":257433,"name":"Roarke Horstmeyer","orcid":"0000-0002-2480-9141","position":11,"is_corresponding":false},{"id":958700,"name":"Lucas Kreiß","orcid":"0000-0002-7749-0015","position":0,"is_corresponding":true}],"reference_count":26,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-07-19T02:02:20.585759Z","pmid":"39958861","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}