Abstract: A bag making machine for manufacturing bags from an elongated film having print patterns repeatedly printed on one surface or two surfaces at a print pitch corresponding to a predetermined number of bags includes a processing unit configured to process the film for each length corresponding to the predetermined number of bags, a moving mechanism configured to move the processing unit, a shooting device, and an image processing device. The shooting device includes not less than one line sensor installed with a longitudinal direction of the line sensor extending along the widthwise direction of the film and obtains a linear image extending throughout a width of the film for each shooting operation. The image processing device sequentially receives the linear images from the shooting device and detects the actual length of the predetermined number of bags of the film based on an image extending throughout the width of the film.

Abstract: A positioning device employing a single image pick-up device whereby two objects can be accurately aligned irrespective of inaccuracies in the pick-up device. The positioning device includes as a primary element an optical device composed of two prisms joined at oblique surfaces with a half-silvered mirror surface therebetween. The objects to be aligned are positioned adjacent first side surfaces of corresponding ones of the two prisms. A totally reflecting coating is provided on a second side surface of one of the two prisms, and an image pick-up device, namely, a video camera, is disposed to receive light emanating from the parallel second side surface of the other one of the two prisms. Alignment is effected in accordance with the output signal from the video camera.

Abstract: An optically guided, unmanned, load transporting vehicle, such as a fork-lift truck, includes an electric camera, such as an industrial television camera, and a controller for controlling the automatic running apparatus of the vehicle. Two reflectors are disposed in front of the camera so that the camera receives light from remote and near visual fields. A guide belt laid on floor for guiding the vehicle is formed with various bar codes representing halt, acceleration, deceleration, etc.