Patent ID: 7133574

Claim:
A position recognition method for recognizing a correct position of a honeycomb structure which is comprised of an outer shell, separation walls arranged in the form of a honeycomb within the outer shell, and a number of axially extending cells which are defined by the separation walls, said honeycomb structure being located with the axis extending in an upward and downward direction, wherein the honeycomb structure is placed on a pallet of a color having a brightness different from that of the honeycomb structure, and a camera to pickup image data is disposed above the honeycomb structure, so that image data of at least a part of the upper surface of the honeycomb structure is picked up by the camera, the camera being disposed at a position where the camera directly views the pallet, on which the honeycomb structure is arranged, through the cells of the honeycomb structure, whereby the position of the honeycomb structure is recognized based on the image data, wherein the pallet is of a color having lesser brightness than the honeycomb structure.