2026-10-11T20:39:30Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33936235 2026-09-18T14:24:40Z category_24442 item_type_3 month_year_09_2026

Reproducible dataset for channel-specific ocular chromatic similarity in bird photographs Osuke Doijiri (24913549) Zoology not elsewhere classified avian vision digital photography image analysis ocular colour reproducibility <p dir="ltr">This dataset supports an image-based analysis of channel-specific ocular chromatic similarity in bird photographs. The study tested whether an image-defined iris region showed greater similarity to the ocular highlight in individual RGB channels than expected from nearby non-eye colour.</p><p dir="ltr">Six original wild-bird photographs were used as a discovery set, and six independently selected public bird photographs were used for validation. The analysis used normalized RGB-channel values, local negative controls, permutation testing, and sensitivity analyses of region-of-interest definitions. The primary analysis settings were fixed before application to the independent validation set.</p><p dir="ltr">The archive contains derived numerical data, per-image measurements, quality-control information, discovery sensitivity-analysis results, summary tables, figures, and Python code for reproducing the principal results and figures from the deposited derived data.</p><p dir="ltr">Third-party validation photographs are not redistributed. The dataset therefore supports reproducibility of the reported image-level analyses without redistributing externally sourced images.</p><p dir="ltr">The results should be interpreted as an image-level chromatic signature and do not establish selective green reflectance or absorption, or a wavelength-specific optical mechanism of the avian eye.</p> 2026-09-18T14:24:40Z Dataset Dataset 10.6084/m9.figshare.33936235.v1 https://figshare.com/articles/dataset/Reproducible_dataset_for_channel-specific_ocular_chromatic_similarity_in_bird_photographs/33936235 CC BY 4.0