An image synthesizer for a driver assisting system includes a receiving module and a combining module. The driver assisting system includes a first camera configured to capture a first image from a first scene and a second camera configured to capture a second image from a second scene, wherein the first scene and the second scene partly overlap in an overlapping region. The receiving module configured to receive the first image from the first camera and the second image from the second camera. The combining module is configured to combine the first image and the second image in the overlapping region using a binary mask.