Patent ID: 9264679
Filing Date: 2016-02-16
CPC Classification: G06F,H04N

Claim Text:
1. A method for projecting an image by a mobile device, the method comprising: projecting an initial image from a projector of the mobile device onto a projection surface; capturing a model image by a camera of the mobile device in response to a user action to initialize a projector pose at a user selected position relative to the projection surface, wherein the camera has a known physical relationship T to the projector; determining an initial camera pose relationship to the model image; determining a subsequent camera pose after movement of the mobile device by processing a subsequent image captured by the camera; determining a subsequent projector pose using T; deriving a perspective transform Ht responsive to the subsequent projector pose; and processing image data using an inverse of the perspective transform Ht prior to projecting a subsequent image from the projector, such that the subsequent image on the projection surface has a perspective appearance similar to the initial image.