Optical flow based tilt sensor

摘要

A method is described for determining a description of motion of a moving mobile camera to determine a user input to an application. The method may involve capturing a series of images from a moving mobile camera and comparing stationary features present in the series of images. Optical flow analysis may be performed on the series of images to determine a description of motion of the moving mobile camera. Based on the determined motion, a user input to an application may be determined and the application may respond to the user input, for example, by updating a user interface of the application.

主权项

1. A method comprising:
accessing images captured from an image sensor positioned on a device; identifying a first feature that is present in the images captured from the image sensor; identifying a second feature that is present in the images captured from the image sensor, the second feature being different than and spaced apart from the first feature; and determining a description of motion of the device in a depth direction based on changes in distance between the first feature and the second feature in the images captured from the image sensor, the depth direction being a direction of movement substantially toward or substantially away from the first feature and the second feature.