This research aims to evaluate the operation efficiency of a remote-controlled backhoe with a similar-figure- nterface to confirm the effectiveness of the similar-figure-nterface.
　This paper describes the results of the experiment of the pointing action in the horizontal experiment field and the 3-dimensional experiment field to compare the operation efficiency of the operation device of the standard operation method and the similar-figure-interface.
　In this pointing experiment, the operation efficiency was evaluated by the speed and the accuracy of the operation. In the case of remote control with a TV camera in which visual information is deteriorated compared with the boarding operation, the result of the pointing experiment in the horizontal field shows that the similar-figure-interface confirmed 40% ameliorable in the operation speed and 45% in accuracy compared with the standard type remote control device. It is considered that the decrease in the operation efficiency due to deterioration of visual information was able to be compensated with the input device. In the pointing experiment in vertical field, the operation speed is the same level as the remote control device with a TV camera, and the accuracy is the same level as the boarding operation. It indicates that the operation efficiency will be improved if 3-dimensional recognition performance is supplied with CG etc.
　It was able to be confirmed that the similar type input device was effectiveness from the above-mendoned in the environment to which sight information was deteriorated. In addition, the points which have to be improved are clarified.