Patent ID: 9432588
Filing Date: 2016-08-30
CPC Classification: H04N

Claim Text:
1. A method for controlling exposure of a camera, comprising: determining an exposure time and a gain used by the camera when capturing a first image in a video sequence; calculating a darkness level with respect to the first image as a product of at least the exposure time and the gain; calculating a saturation level with respect to the first image as a ratio between a number of saturated pixels and a number of completely dark pixels in the first image; if the saturation level exceeds a first limit, decreasing a target value for a mean intensity value of pixels in images captured by the camera by an amount which is an increasing function of the darkness level; and controlling exposure of the camera for images subsequent to the first image in the video sequence, such that the mean intensity value of pixels in the subsequent images approaches the decreased target value.