CAPTURING A STABLE IMAGE USING AN AMBIENT LIGHT SENSOR-BASED TRIGGER

摘要

A method and apparatus for capturing stable images are disclosed. An ambient light sensor makes measurements of ambient light. A change in ambient light between two measurements is determined. If the change in ambient light measurements falls in a predefined range, then the change may be attributable to ambient light sensor being blocked by a user to trigger image capturing. Consequently, a camera is triggered to capture an image. Conversely, if the change in ambient light measurement is outside the range, image capturing is not triggered as the change may be attributable to other factors.

主权项

1. A method for capturing an image by a mobile device camera, comprising:
storing a first threshold for a change in ambient light measurement; determining, by an ambient light sensor, a first measurement of ambient light taken at a first time period; determining, by the ambient light sensor, a second measurement of ambient light taken at a second time period subsequent to the first time period; determining the change in the ambient light measurement based on the first measurement and the second measurement; determining that the change in the ambient light measurement is greater than the first threshold; detecting, based at least in part on determining the change in the ambient light measurement is greater than the first threshold, that a sensory range of the ambient light sensor was obstructed by a light-blocking object; in response to detecting that the ambient light sensor was obstructed, causing the mobile device camera to take a picture; and storing the picture.