A laser projection method including the steps of: irradiating, from a laser projection unit, a workpiece that is a measurement object, with a laser while controlling a plurality of mirror angles; imaging the workpiece with a stereo camera, extracting a contour of the workpiece, and calculating a three-dimensional coordinate; calculating a positional relationship between the laser projection unit and the workpiece by comparing the calculated three-dimensional coordinate of the workpiece contour with the minor angle; and performing coordinate transformation of CAD data information and drawing CAD data from the laser projection unit to the workpiece, based on the positional relationship between the laser projection unit and the workpiece. The machining method including the steps of: selecting a component of a tool; assembling the component; imaging the tool assembled; and determining whether or not a desired tool has been assembled.

The present invention provides various apparatus and methods for detecting laser beams, locating their origin, recording these events, and alerting law enforcement agencies as the event unfolds. The apparatus includes at least two communicably coupled camera systems coupled to one or more image processors. A method for detecting the laser beam includes the use of optical, temporal and two-dimensional spatial image filtering. A method for computing the location of the laser beam consists of performing geometric computations using triangulation techniques and physical surveying of the cameras. A method for communicating the location of the laser beam in real-time includes the use of wired or wireless communications means, including the coordination with local air traffic control information.