1. A system comprising: a first image sensor and a second image sensor configured to capture images using an adjustable exposure time, the images covering different fields of view; and an exposure time control unit configured to: determine, for the first image sensor, one or more brightness parameters from the images; and control exposure times of the first image sensor, such that the one or more brightness parameters at least approximately match one or more corresponding brightness parameters determined for the second image sensor; and an intensity modulation unit configured to adjust brightness of the images according to the one or more corresponding brightness parameters, such that brightness values of the images for corresponding regions at least approximately match, the corresponding regions being located in marginal regions of the images, the marginal regions being substantially similar regions of a surrounding view.