Optical filtering for cameras

摘要

In one embodiment, a camera includes an image sensor within a camera housing that converts light entering the camera housing through an optical filter into digital image data. The optical filter can have a variable opacity. A processor in communication with the image sensor identifies operation settings for the optical filter and adjusts an opacity level of the optical filter over an exposure period in accordance with the operation settings for the optical filter. In addition, the processor modifies values of the digital image data based at least on the operation settings for the optical filter.

主权项

1. A camera, comprising:
a camera housing; an image sensor within the camera housing and configured to convert light entering the camera housing into digital image data, the light passing through a variable opacity optical filter situated in the optical path prior to arriving at the image sensor; and a processor in communication with the image sensor and configured to:
identify one or more operation settings for the optical filter,generate control information that operates the optical filter to cause an opacity level of the optical filter to adjust over an exposure period in accordance with the one or more operation settings for the optical filter, andmodify values of the digital image data to counteract a white point shift or a color shift in the digital image data caused by the optical filter when the optical filter is operated in accordance with the one or more operation settings for the optical filter.