Headlamp control

A control system to control the brightness of the headlamps of a vehicle comprising an image sensor including a matrix of pixels; and an imaging system configured to image the scene forward of the controlled vehicle onto the image array sensor, wherein the image array sensor is divided into subwindows and wherein a space between a boundary of a subwindow and an edge of the image array sensor or a space between the boundaries of subwindows allows for vertical or horizontal adjustment.