Abstract: The disclosure relates to corresponding apparatus, computer program and method for receiving three-dimensional, 3D, map-data, in which a plurality of locations within the 3D-map-data are association with respective 3D-data-capture-locations of a 3D-camera, and in which 3D-camera-timing-information is associated with each of the plurality of locations; receiving one or more two-dimensional, 2D, images from a 2D-camera, in which 2D-camera-timing-information is associated with each 2D-image, and in which each 2D-image is captured when a movement of the 3D-camera is less than a threshold level; identifying 3D-camera-timing-information associated with locations within the 3D-map-data that correspond to 3D-data-capture-locations with a movement level of the 3D-camera less than the threshold level; associating, in a combined dataset, each 2D-image with a corresponding location within the 3D-map-data by a data processing unit correlating the 2D-camera-timing-information with the identified 3D-camera-timing-informatio