Using Colour Pair Patches for Image Retrieval

A machine tool equipped with a magazine and a guide drum which is disposed alongside the magazine. A tracer is mounted on the guide drum and is movable in a three coordinate system and the magazine contains tools which are also movable in a three coordinate system and in a direct ratio to the movement of the tracer. The tracer, which is attached to the guide drum, follows the profile or contour of a master or pattern and the compound motion is transmitted to the magazine containing the tools. Therefore, the tools are moved in the same way as the tracer so that the master or pattern is thus reproduced.