Method and arrangement for creating a digital building model

A system for managing a building using a digital building model, the system comprising:

• a recording device for capturing an image of a room reflecting a current seating configuration of a room, the recording device selected from the group consisting of:
• a camera, a Light Detection and Ranging (LIDAR) device, and a Laser Detection and Ranging (LADAR) device;
• a server storing the digital building model in an associated database;
• a communication link for transferring the captured image to the server via communication links;
• wherein the server includes one or more processors configured to receive the captured image and to map the same into a notation of the digital building model;
• wherein the one or more processors analyze the captured image including assessing the current seating configuration with a pattern recognition program by mapping the seating configuration of the room into the digital building model by a semantic segmentation based on a boundary segmentation edge detections and a semantic instance segmentation to determine whether the current seating configuration violates any rules stored in the digital building model;
• and
• if the current seating configuration violates one or more rules, the one or more processors send a warning message to a building control station and/or a display associated with the room;
• if the current seating configuration does not violate any rules, the one or more processors store a semantic model of the room including the current seating configuration in the digital building model
• wherein the recording device is configured to perform the recording of the seating configuration of the room based on a trigger including either a defined point in time or a predefined event, and to perform the transfer of the recorded seating configuration to the server immediately after the recording.