Patent ID: 11935261
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Measurement (Instruments)
Classification: CPC G  H  E | IPC E  G  H

Claim 3:
4. A server comprising:
an interface module configured to receive an image of a window captured by a mobile device, the window having a plurality of removable cards placed on the window, wherein the plurality of removable cards collectively define a plurality of correspondence points, and wherein the plurality of correspondence points comprise at least a set of correspondence points visible in the image at pre-defined positions on the respective removable card; and
a processor configured to:
detect a set of locations of each of the set of correspondence points,
calculate dimensions of the window based on the set of locations and the pre-defined positions of the correspondence points on the respective removable cards, wherein calculating the dimensions removes perspective distortions in the image, and
output information indicative of the dimensions of the window via the interface module, wherein the dimensions of the window are dimensions of a film to be cut for the window.