A digital map based online platform is provided. The online platform comprises an outdoor map server, a data store, a building database, a space database, and a computer program stored in a medium. The data store manages digital files related to buildings including floor plans of buildings and digital files including website source codes related to spaces in individual folders for each building and space. The building database and the space database manage map setting data of buildings and spaces, respectively. The computer program stored in a medium executes a series of stages to integrally display an outdoor map, an indoor map including floor plans of buildings, Internet links, and responsive HTML pages on the view of a digital map. The medium includes a web server and a user terminal.

In aspects of environment mapping based on UWB tags, a system includes ultra-wideband (UWB) tags located for association with respective objects in an environment, where each UWB tag is identified with a digital label indicative of the association with one or more of the objects. A mapping module is implemented to determine a location of each of the UWB tags in the environment, and determine relative positions of each of the UWB tags with respect to each other. The mapping module can generate a location association map of the objects in the environment based on the location and the relative position of each of the UWB tags associated with the respective objects. In an environment within a building, the mapping module can generate the location association map as a floor plan of the building, including the objects location in the building.

In some embodiments, a method comprises receiving a plurality of digital images depicting an indoor scene of a room and captured using a capture device, and trajectory data of a trajectory that the capture device followed as the capture device was capturing the images; wherein the images and the trajectory data satisfy quality checks, including a closed loop check that requires that first images, of the plurality of digital images, and last images, of the plurality of digital images, overlap; determining a point cloud by preprocessing the digital images and the trajectory data to satisfy optimization constraints, and by identifying and labelling a plurality of feature points in data obtained by preprocessing the digital images and the trajectory data; based on the point cloud and the trajectory data, generating room geometry for the room and a 3D model of the room; and displaying a graphical representation of the 3D model.

Methods and systems estimate calibration errors of magnetic sensor measurements collected at mobile devices. Each measurement is associated with a location of one of the mobile devices and has a calibration error. Data from the sensor measurements is partitioned into sets. Each set is associated with a respective calibration error associated with the measurements that generated the data in the set. Pairs of data items are identified, where each pair includes a data item from a first of the sets corresponding to a measurement, associated with a first location, that generated the data in the first set, and a data item from a second of the sets corresponding to a measurement, associated with a second location that is approximately the same as the first location, that generated the data in the first set. The calibration error associated with each of the sets is estimated based in part on the pairs.

Techniques are described for using computing devices to perform automated operations for determining the acquisition location of an image using an analysis of the image's visual contents. In at least some situations, images to be analyzed include panorama images acquired at acquisition locations in an interior of a multi-room building, and the determined acquisition location information includes a location on a floor plan of the building and in some cases orientation direction information—in at least some such situations, the acquisition location determination is performed without having or using information from any distance-measuring devices about distances from an image's acquisition location to objects in the surrounding building. The acquisition location information may be used in various automated manners, including for controlling navigation of devices (e.g., autonomous vehicles), for display on one or more client devices in corresponding graphical user interfaces, etc.

Disclosed is an approach for detecting that a state of an air-conditioning system in a building has changed and ultimately determining the air-conditioning system's operating pattern, which could help improve collection and/or use of crowdsourced data for an indoor positioning solution and thus lead to more accurate position estimates. According to the disclosed approach, processor(s) may receive sets of altitude data respectively from groups of mobile devices in the building, each set being associated with a respective time period, and could determine floor models of the building respectively based on the sets. Then, processor(s) could make a determination that at least one of the floor models is different from others, and could use this determination to detect that a state of the air-conditioning system has changed during particular time period(s), which are associated with set(s) of altitude data used to determine the at least one floor model.

Communications server apparatus (102) for generating navigable map data comprises a processor (116) and a memory (118), and is configured, under control of the processor, to execute instructions (120) stored in the memory: to generate a series (340) of journey trace data sets (338), each journey trace data set comprising data representing a user journey (310), each journey trace data set being derived using geolocation transmissions (318) from a communications device (104, 106) of a user (308) undertaking the user journey; to aggregate the series of journey trace data sets to generate route image data comprising data representing a network of navigable routes; and to generate, from the route image data, the navigable map data, the navigable map data comprising data representing a series of geolocations corresponding to the network of navigable routes.

Methods for providing a location of an object or objects of interest that may be performed by a processor of a computing device may include generating a map of an environment around the computing device by a first simultaneous location and mapping (SLAM) operation using information received from the optical sensor, identifying an object of interest in the environment of the computing device by an object recognition operation using information received from the optical sensor, determining a location of the object or objects of interest in the environment, and presenting the determined location of the object or objects of interest in the environment in response to a trigger event correlated to the object or objects of interest.

Techniques are described for using multiple devices to automatically determine the acquisition location of an image from a camera device, such as within a building interior and by using data from the multiple devices (e.g., visual data from the camera device's image, and additional data captured by a separate mobile computing device in the same area as the camera device), and for subsequently using determined image acquisition location information in one or more further automated manners. The image may be a panorama image or of another type, and the determined acquisition location for such an image may be at least a location on the building's floor plan—in addition, the automated image acquisition location determination may be further performed without having or using information from any depth sensors or other distance-measuring devices about distances from an image's acquisition location to walls or other objects in the surrounding building.

A method includes obtaining or holding available first radio map information representing a first radio map for a first environment. The method also includes determining, at least partially based on said first radio map information, second radio map information representing a second radio map for a second environment. The second radio map contains or represents a respective radio coverage model for each radio device of a group of radio devices. A portion of the second environment at least partially covers the first environment. A density of radio coverage models contained in or represented by said second radio map in the portion of said second environment and at least partially covering the first environment is higher than a density of radio coverage models contained in or represented by the second radio map in a remaining portion of the second environment. A corresponding apparatus and computer program product are also provided.