A stereo-image processing apparatus capable of adaptively converting, regarding stereo vision, a parallax distribution of a stereo image in accordance with human visual performance is provided. The CHN comprises a NAS processor and IO processor. The catalyst assembly also includes or more catalyst elements disposed in the housing along the flow path. When applied to a bone, two sets of such overlapping holes are located so as to lie on opposite sides of an osteotomy site and on the tibial plate; a third is aligned at approximately 60 degrees with the longitudinal axis. A second circuit segment connected in a feedback arrangement with the first circuit segment provides the search unit with the voltage at the output. Devices, methods, systems and kits incorporating the same are also provided.