{"url":"/dataset/viper","name":"VIPeR","full_name":"Viewpoint Invariant Pedestrian Recognition","description_markdown":"The **Viewpoint Invariant Pedestrian Recognition** (**VIPeR**) dataset includes 632 people and two outdoor cameras under different viewpoints and light conditions. Each person has one image per camera and each image has been scaled to be 128×48 pixels. It provides the pose angle of each person as 0° (front), 45°, 90° (right), 135°, and 180° (back).\r\n\r\nSource: [PaMM: Pose-aware Multi-shot Matching for Improving Person Re-identification](https://arxiv.org/abs/1705.06011)\r\n\r\nImage Source: [Qin et al](https://www.researchgate.net/figure/Some-examples-from-the-VIPeR-dataset-Each-column-is-one-of-632-same-person-example_fig8_331482460)","description_withheld":null,"homepage":"https://github.com/KaiyangZhou/deep-person-reid/blob/master/torchreid/data/datasets/image/viper.py","introduced_date":null,"introduced_date_note":null,"introduced_by":{"paper":null,"title":"Evaluating appearance models for recognition, reacquisition, and tracking","first_author":null,"url":"http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.331.7285&rep=rep1&type=pdf"},"license":{"name":"Unknown","url":null},"modalities":[{"name":"Images","url":"/datasets/modality/images"}],"tasks":[{"name":"Person Re-Identification","url":"/task/person-re-identification","datasets_with_task":"/datasets/task/person-re-identification"},{"name":"Metric Learning","url":"/task/metric-learning","datasets_with_task":"/datasets/task/metric-learning"},{"name":"Patch Matching","url":"/task/patch-matching","datasets_with_task":"/datasets/task/patch-matching"}],"languages":[],"variants":["VIPeR"],"data_loaders":[{"repo":"https://github.com/KaiyangZhou/deep-person-reid","url":"https://github.com/KaiyangZhou/deep-person-reid","frameworks":["pytorch"]}],"num_papers_in_archive":134,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[],"papers_with_a_benchmark_row":[],"syntology_totals":{"read_at":"2026-09-24T18:15:14+00:00","papers_with_samples":0,"samples_harvested":0,"samples_ran":0,"samples_unverified":0,"pointer_only_for_licence":0,"papers_with_no_sample_that_ran":0,"note":"the per-paper counts above, summed; not a rate"},"papers_note":"The archive never published its papers-using-dataset list; these are papers with a leaderboard row on this dataset's benchmarks."}