Abstract: A vision system (10) for a motor vehicle having an imaging apparatus (11) to capture images from a surrounding of the motor vehicle and a data processing device (14) performing image processing on images captured by the imaging apparatus (11) and to control at least one driver assistance device (18) depending on a result of the image processing. The image processing having object detection through edge detection and the object detection having decomposing (21, 22) images captured by the imaging apparatus into a plurality of decomposed images (23, 24) having different color characteristics. Separate edge detection (35, 36) is performed on the decomposed images. The edges (37, 38) from the separate edge detections are merged (39) into a common list of edges. An edge distinguishability measure is calculated for each of the edges (37, 38), and the merging of the edges (37, 38) is based on the edge distinguishability measure.