A visuo-haptic sensor is presented which uses a deformable, passive material that is mounted in view of a camera. When objects interact with the sensor the deformable material is compressed, causing a change in the shape thereof. The change of shape is detected and evaluated by an image processor that is operatively connected to the camera. The camera may also observe the vicinity of the manipulator to measure ego-motion and motion of close-by objects. The visuo-haptic sensor may be attached to a mobile platform, a robotic manipulator or to any other machine which needs to acquire haptic information about the environment.