Method and system for image construction using multiple exposures

摘要

A motion sensor is used to sense the movement of the camera during an exposure period. The camera has an image sensor to form one or more exposures. When the movement is within a certain range, the exposures are used to provide one or more frames so that an image can be constructed based on the frames. In one embodiment, the exposure period is divided into several short intervals in order to capture several image frames and only the image frames captured when the position of the camera is within a predetermined range are used to form the final image. The exposure time for each frame is small in order to reduce the motion blur degradation of the individual frames. If the camera is stable and substantially stationary relative to the scene, then all or many of the shorter frames are used to form the final image.

主权项

1. A method comprising:
exposing a projected image on an image sensor of an imaging system during at least part of an exposure period for attaining at least two exposures; sensing movement of the imaging system, during the exposure period, in order to determine an amount of movement of the imaging system relative to an initial position of the imaging system in the exposure period; and constructing an image based on at least a first exposure and a second exposure, wherein the first exposure is attained during a first time period, within the exposure period, in which the determined amount of movement of the imaging system is within a predetermined movement range relative to the initial position of the imaging system, the second exposure is attained during a second time period, within the exposure period, in which the determined amount of movement of the imaging system is within the predetermined movement range relative to the initial position of the imaging system, and between the first time period and the second time period there is a third time period in which the determined amount of movement of the imaging system is outside the predetermined movement range relative to the initial position of the imaging system.