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

Claim 0:
1. A system for determining dimensions of a film to be applied to a window, the system comprising:
a plurality of removable cards for placement on the window, each of the plurality of removable cards having a plurality of visible correspondence points at pre-defined positions on the respective removable card;
a mobile device having an image capture device, wherein the image capture device is configured to capture an image of the window and at least a subset of the plurality of removable cards placed on the window, wherein the subset of removable cards captured in the image have a set of correspondence points visible in the image; and
a server configured to:
detect a set of locations of each of the set of correspondence points visible in the image,
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, wherein the dimensions of the window are the dimensions of the film to be cut for the window.