Using inertial sensors to provide smoothed exposure and white balance adjustments for video and photographic applications

摘要

A first image frame is gathered. The first image frame, a first white balance value, and a first exposure value are stored. Information is sensed from an inertial sensor. A second image frame and intermediate image frames are gathered. A distance traversed by a camera is determined. In response to one or more of: the distance exceeding a predetermined threshold, or a new white balance value significantly differing from a previous white balance value, or a new exposure value significantly differing from a previous exposure value, a second white balance value and a second exposure value are determined for the second image frame. A smoothed white balance value and a smoothed exposure value are determined for the intermediate image frames.

主权项

1. A method comprising:
gathering a first image frame; storing in a memory buffer the first image frame, a first white balance value for the first image frame, and a first exposure value for the first image frame; sensing information from one or more inertial sensors in a camera; gathering a second image frame and gathering one or more intermediate image frames after the gathering of the first image frame and prior to the gathering of the second image frame; using the sensed information from the one or more inertial sensors to determine a distance traversed by the camera from the gathering of the first image frame to the gathering of the second image frame and,in response to the distance exceeding a predetermined threshold,determining a second white balance value and a second exposure value for the second image frame; anddetermining, estimating, or calculating a smoothed white balance value and a smoothed exposure value for the one or more intermediate image frames;else in response to the distance not exceeding the predetermined threshold, utilizing the first white balance value and the first exposure value for the one or more intermediate image frames.