A method and system for capturing and generating a 3 dimensional image of a target using a single camera. The system has at least one light source which intensity is able to be adjusted, at least one image recorder that captures images of a target that has a plurality of obstacles, and at least one control unit not shown in figures, that controls the light source by increasing or decreasing its intensity within a time period, that controls the image recorder so as to capture a plurality of images of said target within said time period, and that determines the depth of the obstacles so as to capture and generate a 3 dimensional image by comparing the illumination level change of the obstacles between captured images within the time period.