using multiplicative weighting factors or weights over a spatially constant grid of reduced resolution in the image area the weights provide flexibility of preserving the predefined topology of region of interest as well as a simple ability to adjust the position of the region of interest by varying the values of the weights typically over a relatively small number of cells at the periphery of the grid the fine details of the periphery of the region may be smoothed to the level of the reduced resolution by scaling the weights of the peripheral cells to be proportional to the area of the cells within the region of interest embodiments of the present invention may be useful to provide flexible and efficient method of controlling the location of the region of interest over the image surface as a result of ego motion of the camera or image motion of an object of interest being tracked in driver assistance systems improved obstruction detection in the road environment may be achieved when the obstruction and road have minimal image contrast and or in images which include the sun above the horizon outside the region of interest thus there is a need for and it would be advantageous to have a camera in which the region of interest of the image may be specified by.