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Google Landmarks Dataset v2 -- A Large-Scale Benchmark for Instance-Level Recognition and Retrieval

3 Apr 2020arXiv:2004.01804archive 2025-07-28

Tobias Weyand, Andre Araujo, Bingyi Cao, Jack Sim

While image retrieval and instance recognition techniques are progressing rapidly, there is a need for challenging datasets to accurately measure their performance -- while posing novel challenges that are relevant for practical applications. We introduce the Google Landmarks Dataset v2 (GLDv2), a new benchmark for large-scale, fine-grained instance recognition and image retrieval in the domain of human-made and natural landmarks. GLDv2 is the largest such dataset to date by a large margin, including over 5M images and 200k distinct instance labels. Its test set consists of 118k images with ground truth annotations for both the retrieval and recognition tasks. The ground truth construction involved over 800 hours of human annotator work. Our new dataset has several challenging properties inspired by real world applications that previous datasets did not consider: An extremely long-tailed class distribution, a large fraction of out-of-domain test photos and large intra-class variability. The dataset is sourced from Wikimedia Commons, the world's largest crowdsourced collection of landmark photos. We provide baseline results for both recognition and retrieval tasks based on state-of-the-art methods as well as competitive results from a public challenge. We further demonstrate the suitability of the dataset for transfer learning by showing that image embeddings trained on it achieve competitive retrieval performance on independent datasets. The dataset images, ground-truth and metric scoring code are available at https://github.com/cvdfoundation/google-landmark.

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Code

cvdfoundation/google-landmark officialmentioned in papermentioned on GitHubtf report
Ash-Lee233/delf mentioned on GitHubmindsporenot reachable when probed 2026-09-17 — repositories for recent papers often appear after camera-ready report
Shiro-LK/python-DOLG mentioned on GitHubpytorchMIT report
csiro-robotics/Pair-VPR mentioned on GitHubpytorchNOASSERTION report
tensorflow/models mentioned on GitHubtf report

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Tasks

Image RetrievalLandmark RecognitionRetrievalTransfer Learning

Datasets

Introduced by this paper, per the archive.

Google Landmarks Dataset v2

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Image Retrieval Google Landmarks Dataset v2 (retrieval, testing) ResNet101+ArcFace GLDv2-train-clean mAP@100 24.15 #4 of 4 Archive leaderboard report
Image Retrieval Google Landmarks Dataset v2 (retrieval, validation) ResNet101+ArcFace GLDv2-train-clean mAP@100 22.2 #3 of 3 Archive leaderboard report
Image Retrieval ROxford (Hard) ResNet101+ArcFace GLDv2-train-clean mAP 51.6 #8 of 23 Archive leaderboard report
Image Retrieval ROxford (Medium) ResNet101+ArcFace GLDv2-train-clean mAP 74.2 #7 of 23 Archive leaderboard report
Image Retrieval RParis (Hard) ResNet101+ArcFace GLDv2-train-clean mAP 70.3 #6 of 23 Archive leaderboard report
Image Retrieval RParis (Medium) ResNet101+ArcFace GLDv2-train-clean mAP 84.9 #6 of 23 Archive leaderboard report
Landmark Recognition Google Landmarks Dataset v2 (recognition, testing) DELG global+SP microAP 56.35 #1 of 1 Archive leaderboard report
Landmark Recognition Google Landmarks Dataset v2 (recognition, validation) DELG global+SP microAP 55.01 #1 of 1 Archive leaderboard report

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Methods

1x1 ConvolutionArcFaceAverage PoolingBatch NormalizationBottleneck Residual BlockConvolutionGlobal Average PoolingKaiming InitializationMax PoolingReLUResidual BlockResidual Connection

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