Datasets

Below you may find some general information about, and links to, the visual localization datasets. For more detailed documentation about the organization of each dataset, please refer to the accompanying readme file for each dataset. The license terms and conditions are also laid out in the readme files.

Aachen Day-Night dataset

The Aachen Day-Night dataset, which is based on the original Aachen dataset, depicts the old inner city of Aachen, Germany. The database images used to build the reference scene representation were all taken during daytime with hand-held cameras over a period of about two years. The datasets offers query images taken at daytime and at nighttime. All query images were taken with mobile phone cameras, i.e., the Aachen Day-Night dataset considers the scenario of localization using mobile devices, e.g., for Augmented or Mixed Reality. The nighttime query images were taken using software HDR to create (relatively) high-quality images that are well-illuminated.

Features of the Aachen Day-Night dataset
Reference images:4,328
Query images: 922 (824 daytime, 98 nighttime)

The dataset also provides additional daytime images that are not part of the reference scene representation. While no ground truth camera poses are provided for these images, they can be used as part of the benchmark.

Download Aachen Day-Night dataset

CMU-Seasons dataset

The CMU Seasons dataset, which is based on a subset of the CMU Visual localization dataset by Badino et al. It depicts urban, suburban, and park scenes in the area of Pittsburgh, USA. The reference and query images were captured by two front-facing cameras mounted on a car, pointing to the left/right of the vehicle at approximately 45 degrees. The images were recorded over a period of 1 year. One such traversal is used to define a reference condition and the reference scene representation. Other traversals, capturing different seasonal conditions, are used for query. All images were recorded in sequences. The CMU Seasons dataset represents an autonomous driving scenario, where it is necessary to localize images taken under varying seasonal conditions against a (possibly outdated) reference scene representation.

Features of the CMU Seasons dataset:
Reference images: 7,159
Query images: 75,335
Download CMU Seasons dataset

Extended CMU-Seasons dataset

This is an extended version of the CMU Seasons dataset, containing roughly 40% more images. Specifically, unlike in the CMU Seasons dataset, where camera poses for only a single condition was released, we here release roughly half of all camera poses for all conditions. The remaining half constitute the private test set you may evaluate your methods on. This dataset supercedes the old CMU Seasons dataset, and we strongly recommend everyone to use this dataset instead of the now deprecated CMU Seasons dataset.

Features of the Extended CMU Seasons dataset:
Reference images: 60,937
Query images: 56,613
Download Extended CMU-Seasons dataset

RobotCar Seasons

The RobotCar Seasons dataset, which is based on a subset of the RobotCar dataset, depicts the city of Oxford, UK. The reference and query images were captured by three synchronized cameras mounted on a car, pointing to the rear-left, rear, and rear-right, respectively. The images were recorded by driving the same route over a period of 12 months. One traversal is used to define a reference condition and the reference scene representation. Other traversals, covering different seasonal and illumination conditions, are used for query. All images were recorded in sequences. The RobotCar Seasons dataset represents an autonomous driving scenario, where it is necessary to localize images taken under varying seasonal conditions against a (possibly outdated) reference scene representation. In contrast to the CMU Seasons dataset, it also contains images taken at nighttime. Compared to the Aachen Day-Night dataset, the nighttime images of the RobotCar Seasons dataset exhibit significantly more motion blur and are of lower image quality.

Features of the RobotCar Seasons dataset:
Reference images: 26,121
Query images: 11,934
Download RobotCar Seasons dataset