He is best known for his work in visual attention, specifically for establishing the need for visual attention in both biological and computational systems through an argument based on the computational complexity of visual information processing[1] and subsequently developing a computational framework for visual attention known as the Selective Tuning model[2]. He is also acknowledged as a pioneer in the area of Active Vision, his students and he being first to propose strategies for active object recognition and object visual search by a robot[3][4]. He has made many contributions to machine vision (particularly motion interpretation, colour processing, binocular vision, active robotic head design[5], shape analysis[6] as well as to human vision[7][8][9][10], robotics[11] and applied areas such as cardiology or dentistry[12][13][14] and assistive robotics[15].