Patent ID: 8610818

Claim:
A method, comprising: calibrating a controller to output a voltage level, of a plurality of voltage levels, for each respective discrete transparency level associated with an electronically actuated filter, wherein calibrating the controller comprises: emitting, from a standard light source, a plurality of intensity levels of light towards an image sensor; reading, for each intensity level of light, an output of the image sensor; and identifying a voltage level, of the plurality of voltage levels, that adjusts the transparency level of the electronically actuated filter such that the image sensor is not overexposed by light passing through the electronically actuated filter; detecting that the frames of a digital video sequence are associated with a first shutter speed that is substantially greater than a frame rate of the digital video sequence; determining that the image sensor is receiving light at a first intensity level, of the plurality of intensity levels; applying, by the controller, a first voltage level, of the plurality of voltage levels and corresponding to the first intensity level, to the electronically actuated filter to attenuate the amount of light reaching the image sensor; and adjusting the shutter speed associated with the digital video sequence to a second shutter speed that is slower than the first shutter speed based on a setting of the electronically actuated filter.