Receiving assembly component recognition structure, and assembly information recognition apparatus and assembly processing apparatus that use the structure

An assembly information recognition apparatus comprising:

• a recognition indicator element that is provided in a portion of an assembly base on a predetermined area of which there is placed a receiving assembly component used for assembling an assembly component or a portion of the receiving assembly component and that has, at a predetermined positional relationship, four unit pattern marks or more formed such that a density pattern of each of the unit pattern marks sequentially changes from a center position to a periphery of the mark;
• an imaging tool that is disposed opposite the assembly base or the receiving assembly component and that captures an image of the recognition indicator element;
• and
• a layout information recognition block that uses at least imaging information about the recognition indicator element whose image has been captured by the imaging tool, thereby recognizing layout information about a position and an attitude of the assembly base or the receiving assembly component.