Abstract: A stroboscope is employed as the lighting source for a video camera, the output of which is converted into a signal from which a fault in the object scanned is detected. The stroboscope is controlled in response to a portion of the output voltage of the video camera to insure that the luminous energy is constant.

Abstract: A device 12 acquires substantially centered images of moving items. A strobe (36) illuminates an item (16) while a camera 28 having a view (29) with a view center (39) acquires an image of that item (16). A position sensor (38) generates an indication signal that indicates when an item (16) is substantially a predetermined distance (D) from the view (29), and an image-data memory (31) stores data representing each image. A processor (24) executes a program for waiting a delay from each indication signal and then instructing the strobe (36) to fire, the camera (28) to acquire an image, and the image-data memory (31) to store the image. The processor (24) then determines an offset value representing the offset of the image from the view center (39), updates an average offset value using the offset value, and updates the delay using the updated average offset value. A program memory (20) stores the program, and a working memory (20) stores the offset value, the delay, and the average offset value.

Abstract: An apparatus and a process for detecting surface defects on moving long metallic products utilizing linear CCD cameras for effecting exposures at successive times t1, t2,t3 . . . Tn. A processing device calculates differences observed for each pixel or assemble of pixels at the successive times and any variations in the differences makes it possible to detect defects and the extent of the defects. The use of thresholds allows for reduction in the background noise and different orientations of the optical axis of the camera permit the detection of different types of defects.

Abstract: An apparatus for conveying sealed insulating glass panes (1) includes a conveying device (3, 14) associated, in the zone of the end (10) on the inlet side and the end (11) on the outlet side, with recorders (12), preferably those with respectively two TV cameras, producing images of the corners (4, 5 , 6 , 7 ) of the insulating glass pane (1), these images being displayed as stationary images on a monitor (41) until the subsequent insulating glass pane (1) arrives. In order to improve the quality of the images, illuminating devices (15) are associated with the recorders (12), these devices being activated only when the recorders (12) are in operation. Based on the images of the corners (4 and 5) of the insulating glass pane (1) produced by the recorders (12) and displayed on the monitor (41), the quality of the seal (20) in the zone of the corners (4, 5, 6, 7) can be evaluated even without lifting out and turning of insulating glass panes (1).