--- _id: '3384' abstract: - lang: eng text: Here we introduce a database of calibrated natural images publicly available through an easy-to-use web interface. Using a Nikon D70 digital SLR camera, we acquired about six-megapixel images of Okavango Delta of Botswana, a tropical savanna habitat similar to where the human eye is thought to have evolved. Some sequences of images were captured unsystematically while following a baboon troop, while others were designed to vary a single parameter such as aperture, object distance, time of day or position on the horizon. Images are available in the raw RGB format and in grayscale. Images are also available in units relevant to the physiology of human cone photoreceptors, where pixel values represent the expected number of photoisomerizations per second for cones sensitive to long (L), medium (M) and short (S) wavelengths. This database is distributed under a Creative Commons Attribution-Noncommercial Unported license to facilitate research in computer vision, psychophysics of perception, and visual neuroscience. article_number: e20409 author: - first_name: Gasper full_name: Tkacik, Gasper id: 3D494DCA-F248-11E8-B48F-1D18A9856A87 last_name: Tkacik orcid: 0000-0002-6699-1455 - first_name: Patrick full_name: Garrigan, Patrick last_name: Garrigan - first_name: Charles full_name: Ratliff, Charles last_name: Ratliff - first_name: Grega full_name: Milcinski, Grega last_name: Milcinski - first_name: Jennifer full_name: Klein, Jennifer last_name: Klein - first_name: Lucia full_name: Seyfarth, Lucia last_name: Seyfarth - first_name: Peter full_name: Sterling, Peter last_name: Sterling - first_name: David full_name: Brainard, David last_name: Brainard - first_name: Vijay full_name: Balasubramanian, Vijay last_name: Balasubramanian citation: ama: Tkačik G, Garrigan P, Ratliff C, et al. Natural images from the birthplace of the human eye. PLoS One. 2011;6(6). doi:10.1371/journal.pone.0020409 apa: Tkačik, G., Garrigan, P., Ratliff, C., Milcinski, G., Klein, J., Seyfarth, L., … Balasubramanian, V. (2011). Natural images from the birthplace of the human eye. PLoS One. Public Library of Science. https://doi.org/10.1371/journal.pone.0020409 chicago: Tkačik, Gašper, Patrick Garrigan, Charles Ratliff, Grega Milcinski, Jennifer Klein, Lucia Seyfarth, Peter Sterling, David Brainard, and Vijay Balasubramanian. “Natural Images from the Birthplace of the Human Eye.” PLoS One. Public Library of Science, 2011. https://doi.org/10.1371/journal.pone.0020409. ieee: G. Tkačik et al., “Natural images from the birthplace of the human eye,” PLoS One, vol. 6, no. 6. Public Library of Science, 2011. ista: Tkačik G, Garrigan P, Ratliff C, Milcinski G, Klein J, Seyfarth L, Sterling P, Brainard D, Balasubramanian V. 2011. Natural images from the birthplace of the human eye. PLoS One. 6(6), e20409. mla: Tkačik, Gašper, et al. “Natural Images from the Birthplace of the Human Eye.” PLoS One, vol. 6, no. 6, e20409, Public Library of Science, 2011, doi:10.1371/journal.pone.0020409. short: G. Tkačik, P. Garrigan, C. Ratliff, G. Milcinski, J. Klein, L. Seyfarth, P. Sterling, D. Brainard, V. Balasubramanian, PLoS One 6 (2011). date_created: 2018-12-11T12:03:01Z date_published: 2011-06-16T00:00:00Z date_updated: 2021-01-12T07:43:07Z day: '16' ddc: - '570' department: - _id: GaTk doi: 10.1371/journal.pone.0020409 file: - access_level: open_access checksum: 307d4356916471306e3705ac65b82fa1 content_type: application/pdf creator: system date_created: 2018-12-12T10:09:25Z date_updated: 2020-07-14T12:46:11Z file_id: '4749' file_name: IST-2015-379-v1+1_journal.pone.0020409.pdf file_size: 1424768 relation: main_file file_date_updated: 2020-07-14T12:46:11Z has_accepted_license: '1' intvolume: ' 6' issue: '6' language: - iso: eng month: '06' oa: 1 oa_version: Published Version publication: PLoS One publication_status: published publisher: Public Library of Science publist_id: '3223' pubrep_id: '379' quality_controlled: '1' scopus_import: 1 status: public title: Natural images from the birthplace of the human eye tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2011' ...