Automated room-specific white balance correction in a building image with visual data showing multiple rooms

Abstract

Techniques are described for using computing devices to perform automated operations involving, for an image acquired at a building and having visual data that shows portions of multiple separate rooms or other spatial regions at the building, automatically analyzing and manipulating visual data of the image to perform white balancing corrections separately for different parts of the image corresponding to the different spatial regions, such as to separately correct for different illumination levels in the different spatial regions. The described techniques may further include using one or more resulting modified images with white balancing corrections in one or more further automated manners, such as to determine one or more types of building information (e.g., a building floor plan) for an as-built multi-room building, and optionally further using the determined building information to provide navigational data for the building.