State of the art on the Market-1501 dataset

In this page, will summarize the state-of-the-art methods on Market-1501 dataset. We will report both mAP and rank-1, 5, 10, 20 accuracies. Note that this may not be the only performance measurement. Other metrics, such as recognition time, are also important.

When CMC curves are used in the respective paper, we roughly estimate the numbers and fill in the blanks. The authors may feel free to contact me with the accurate numbers. We also encourage the authors provide links to their code, so that others can repeat these methods. Please contact me at

Reference Market-1501 Notes
"Scalable person re-identification: a benchmark", Liang Zheng, Liyue Shen, Lu Tian, Shengjin Wang, Jingdong Wang, Qi Tian, ICCV 2015 8.28-----2.23 gBiCov [1], Euclidean distance, single query
9.62-----2.72HistLBP [2], Euclidean distance, single query. Super thanks to Mengran Gou for sending us the evaluation results
26.07-----7.75LOMO [3], Euclidean distance, single query
35.8452.4060.3367.6471.8875.8014.75BoW, Euclidean distance, single query
44.3660.2466.4873.2576.1979.6919.42BoW, Euclidean distance, multiple query
34.00-----15.66BoW + LMNN, single query
38.21-----17.05BoW + ITML, single query
44.4263.9072.1878.9582.5187.0520.76BoW + KISSME, single query
"Person re-identification: Past, Present and Future", Liang Zheng, Yi Yang, Alexander Hauptmann, Arxiv 2016 55.4976.2883.5588.9891.7293.9732.36 AlexNet identification model, using FC7 (4,096-dim) and Euclidean distance for testing, single query. This method is also used in [4,5]
73.9087.6891.5494.8096.0297.2147.78ResNet-50 identification model, using Pool5 (2,048-dim) and Euclidean distance for testing, single query
Current state of the art
"Multiregion Bilinear Convolutional Neural Networks for Person Re-Identification", Evgeniya Ustinova, Yaroslav Ganin, Victor Lempitsky, Arxiv 2015. 45.58 67 7682--26.11Multiregion Bilinear DML, single query.
56.59 75 8288--32.26Multiregion Bilinear DML, multiple query.
"Scalable Metric Learning via Weighted Approximate Rank Component Analysis", Cijo Jose, François Fleuret, ECCV 2016 45.16 68.12 768487-- Use the baseline BoW descriptor and the proposed WARCA metric learning method.
"A Comprehensive Evaluation and Benchmark for Person Re-Identification: Features, Metrics, and Datasets", Srikrishna Karanam, Mengran Gou, Ziyan Wu, Angels Rates-Borras, Octavia Camps, Richard J. Radke, ArXiv 2016 46.5 71.1 79.986.9--- HistLBP+kLFDA. Single query.
"Temporal Model Adaptation for Person Re-Identification", Niki Martinel, Abir Das, Christian Micheloni, Amit K. Roy-Chowdhury, ECCV 2016 47.92 - ----22.31 Using 13.58% of the labeled data. Single query.
"Deep Linear Discriminant Analysis on Fisher Networks: A Hybrid Architecture for Person Re-identification", Lin Wu, Chunhua Shen, Anton van den Hengel, ArXiv 2016 48.15 - ----29.94 Combines Fisher vector and deep neural network. Not sure whether multiple queries are used.
"Learning a Discriminative Null Space for Person Re-identification", Li Zhang, Tao Xiang, Shaogang Gong, CVPR 2016. 55.43 - ----29.87LOMO+Discriminative Null Space, single query.
71.56 - ----46.03Both multiple query (MQ) and score-level feature fusion are used.
"Similarity Learning with Spatial Constraints for Person Re-identification", Dapeng Chen, Zejian Yuan, Badong Chen, Nanning Zheng, CVPR 2016 51.90 - ----26.35 Extract HSV, LAB, HOG, and SILTP features from patches, and use the proposed SCSP method. Single query.
"PersonNet: Person Re-identification with Deep Convolutional Neural Networks", Lin Wu, Chunhua Shen, Anton van den Hengel, ArXiv 2016. 37.21 - ----18.57Use single query. Similarity between boxes is learnt end-to-end through a deep network.
"End-to-End Comparative Attention Networks for Person Re-identification", Hao Liu, Jiashi Feng, Meibin Qi, Jianguo Jiang, Shuicheng Yan, ArXiv 2016. 48.24 - ----24.43Use single query. Features are learned by the Comparative Attention Network
"Deep Attributes Driven Multi-Camera Person Re-identification", Chi Su, Shiliang Zhang, Junliang Xing, Wen Gao, Qi Tian, ECCV 2016. 39.4 - ----19.6single query.
49.0 - ----25.8Multiple query.
"Multi-Scale Triplet CNN for Person Re-Identification", Jiawei Liu, Zheng-Jun Zha, Qi Tian, Dong Liu, Ting Yao, Qiang Ling, Tao Mei, A 2016. 45.1 70.1 78.4-88.7--single query. Use a triplet loss CNN model with multi-scale improvement.
55.4 78.9 85.6-93.7--Multiple query
"Learning Deep Embeddings with Histogram Loss", Evgeniya Ustinova and Victor Lempitsky, NIPS 2016. 59.47 80.73 86.9491.09- --It seems the single query mode is chosen. A previously introduced deep metric learning framework is adopted, but with new loss functions.
"A Siamese Long Short-Term Memory Architecture for Human Re-Identification", Rahul Rama Varior, Bing Shuai, Jiwen Lu, Dong Xu, Gang Wang, ECCV 2016. 61.6 - ----35.3Use multiple queries. The LSTM model processes image regions sequentially.
"Gated Siamese Convolutional Neural Network Architecture for Human Re-Identification", Rahul Rama Varior, Mrinal Haloi, Gang Wang, ECCV 2016. 65.88 - ----39.55single query. Feature learned by the Gated Siamese CNN.
76.04 - ----48.45Multiple query
"Person Re-Identification by Camera Correlation Aware Feature Augmentation", Ying-Cong Chen, Xiatian Zhu, Wei-Shi Zheng, Jian-Huang Lai, TPAMI 2017. 71.8 - ----45.5single query. Use CRAFT-MFA+LOMO
79.7 - ----54.3Multiple query
"Looking Beyond Appearances: Synthetic Training Data for Deep CNNs in Re-identification", Igor Barros Barbosa, Marco Cristani, Barbara Caputo, Aleksander Rognhaugen and Theoharis Theoharis1, Arxiv 2017. 73.87 88.03 92.2295.0796.2097.3947.89single query. Use SOMAnet and Market1501 as training set.
81.29 92.61 95.3197.1297.6898.4356.98Multiple query
"Re-ranking Person Re-identification with k-reciprocal Encoding", Zhun Zhong, Liang Zheng, Donglin Cao and Shaozi Li, CVPR 2017. 77.11 - --- -63.63Single query. Re-ranking is performed.
"Pose Invariant Embedding for Deep Person Re-identification", Liang Zheng, Yujia Huang, Huchuan Lu, and Yi Yang, Arxiv 2017. 79.33 90.76 94.4196.52- -55.95Single query. The PIE descriptor and kissme is used.
"Unlabeled Samples Generated by GAN Improve the Person Re-identification Baseline in vitro", Zhedong Zheng, Liang Zheng, Yi Yang, Arxiv 2017. 78.06 - ----56.23single query. GAN images are used in the ResNet baseline.
85.12 - ----68.52Multiple query
"A Discriminatively Learned CNN Embedding for Person Re-identification", Zhedong Zheng, Liang Zheng, Yi Yang, Arxiv 2016. 79.51 90.91 94.0996.2397.3398.2559.87single query. Identification and Verification losses are used in a siamese network based on ResNet-50.
85.84 94.54 96.4197.5198.0798.8170.33Multiple query
"Scalable Person Re-identification on Supervised Smoothed Manifold", Song Bai, Xiang Bai, Qi Tian, CVPR 2017. 82.21 - ----68.80single query. IDE+re-ranking.
88.18 - ----76.18Multiple query
"SVDNet for Pedestrian Retrieval", Yifan Sun, Liang Zheng, Weijian Deng, Shengjin Wang, Arxiv 2017. 82.3 - --- -62.1Single query. 1,024-dim pool5 feature from svdnet is used.
"Deep Transfer Learning for Person Re-identification", Mengyue Geng, Yaowei Wang, Tao Xiang, Yonghong Tian, Arxiv 2016. 83.7 - ----65.5single query. Identification and Verification losses are used in a siamese network based on GoogleNet.
89.6 - ----73.8Multiple query
"Improving Person Re-identification by Attribute and Identity Learning", Yutian Lin, Liang Zheng, Zhedong Zheng, Yu Wu and Yi Yang, Arxiv 2017. 84.2993.20 95.1997.00--64.67Single query. Attributes and ID classification are jointly learning.
"Pedestrian Alignment Network for Person Re-identification", Liang Zheng, Zhedong Zheng, Yi Yang, Arxiv 2017. 82.81 - ----63.35single query. Pedestrians are aligned by the Spatial Transformer Network. Results could be higher when fine-tuning on the GAN model [7].
85.78 93.38 ----76.56Single query + re-ranking [6]
88.18 - ----71.72Multiple query
89.79 - ----83.79Multiple query + re-ranking [6]
"Person re-identification by deep joint learning of multi-loss classification", Wei Li, Xiatian Zhu, and Shaogang Gong, IJCAI 2017. 83.9 - ----64.4single query. Stripes and global images are jointly considered in a classification CNN network with multiple streams.
88.8 - ----72.9Single query + re-ranking [6]
85.1 - ----65.5single query, 4 body parts
89.7 - ----74.5Multiple query, 4 body parts
"In Defense of the Triplet Loss for Person Re-Identification", Alexander Hermans, Lucas Beyer and Bastian Leibe, Arxiv 2017. 84.92 94.21 ----69.14single query. The triplet-loss based network is fine-tuned. Image size: 256x128. The last layer in ResNet is replaced with one 1,024-dim layer and one 128-dim layer. Batch normalization is used as well.
86.67 93.38 ----81.07Single query + re-ranking [6]
90.53 96.29 ----76.42Multiple query
91.75 95.78 ----87.18Multiple query + re-ranking [6]
"Dual Mutual Learning", Ying Zhang, Tao Xiang, Timothy Hospedales, Huchuan Lu, Arxiv 2017. 87.73 - ----68.83single query. Two MoblieNets learn from each other, and the average re-ID results of the two individual networks is reported.
91.66 - ----77.14multiple query
Use the dataset, but do not report results/ use different evaluation protocols
"Constrained Deep Metric Learning for Person Re-identification", Hailin Shi, Xiangyu Zhu, Shengcai Liao, Zhen Lei, Yang Yang, Stan Z. Li, ArXiv 2015. - - -----Used together with CUHK03 as training data for the proposed Constrained Deep Metric Learning. Test on CUHK01 and VIPeR.
"An Enhanced Deep Feature Representation for Person Re-identification", Shangxuan Wu, Ying-Cong Chen, Xiang Li, An-Cong Wu, Jin-Jie You, Wei-Shi Zheng, WACV 2016. - - -----Used as training data for the proposed Feature Fusion Net. Testing is performed on other benchmarks.
"Semantics-Aware Deep Correspondence Structure Learning for Robust Person Re-identification", Yaqing Zhang, Xi Li, Liming Zhao, Zhongfei Zhang, IJCAI 2016. - - -----Used as training data for the proposed DCSL model.
"Human-In-The-Loop Person Re-Identification", Hanxiao Wang, Shaogang Gong, Xiatian Zhu, Tao Xiang, ECCV 2016. 78.0 - ---86.0-1000 identities, 300 queries are used. Single Shot. 6 random splits.
33.8 61.0 73.685.3--- 501 identities, single shot, 6 random splits. We assume 501 queries are used.


[1] B. Ma, Y. Su, and F. Jurie. Covariance descriptor based on bioinspired features for person re-identification and face verification. Image and Vision Computing, 32(6):379–390, 2014.
[2] F. Xiong, M. Gou, O. Camps, and M. Sznaier. Person reidentification using kernel-based metric learning methods. In ECCV, 2014.
[3] S. Liao, Y. Hu, X. Zhu, and S. Z. Li. Person re-identification by local maximal occurrence representation and metric learning. In CVPR, 2015.
[4] L. Zheng, Z. Bie, Y. Sun, J. Wang, C. Su, S. Wang, and Q. Tian, MARS: A Video Benchmark for Large-Scale Person Re-identification. In ECCV, 2016.
[5] L. Zheng, H. Zhang, S. Sun, M. Chandraker, Yi Yang, and Q. Tian. Person re-identification in the Wild. In CVPR, 2017.
[6] Z. Zhong, L. Zheng, D. Cao, and S. Li. Re-ranking Person Re-identification with k-reciprocal Encoding. In CVPR 2017 [7] Z. Zheng, L. Zheng, Yi Yang, Unlabeled Samples Generated by GAN Improve the Person Re-identification Baseline in vitro. ArXiv 2017.