Abstract:
Detection arrangement and method for detecting presence of a residue in a sample by determining color values of the sample, associated with the L*a*b color model, where a value of a composite parameter Z is calculated as follows: Z = wL + waa + wbb where wL, wa, and wb are weighting factors having a value depending on said residue and said sample, and a determination is made whether or not said sample comprises more or less than a predetermined amount of said residue in dependence on said value of said composite parameter Z. In a preferred embodiment, the arrangement is used to detect antibiotic residues, e.g. penicillin-G, in food products, e.g. milk, or body fluids, e.g. blood, urine.
Abstract:
A video inspection system includes first and second video cameras (36 and 48) mounted along a parallel axes. A lighting array (16) is pulsed, and resultant light is reflected from a specimen to both cameras. Orientation of the specimen is determined in accordance with an image generated from a first camera (36). This data is used to isolate a selected portion of the specimen for analysis by an image generated from the second camera (48).
Abstract:
A method for checking the surface condition of one side (2) of a solid (1) to detect any shape defects that may be present therein, and a device therefor, are disclosed. The side to be checked is observed, for example, by imaging with a wide-angle video camera (3) and a narrow-angle video camera (4) and the size of the detected defects is measured by means of an opto-electronic sensor (11). The device is useful for operator checking or automatic checking.
Abstract:
A lead-bend measuring apparatus comprising: an illuminating device (4a-4e) for projecting light onto leads projecting from a package of an integrated circuit device; an imaging device (1,10,11) for imaging light reflected from and transmitted through the leads; a cutout device (16,19b) for fetching an image of the imaged light and dividing the image into a plurality of sections; a binarization processing device (17,20b) for processing gradations of the image with different binarization levels for each of the divided sections; a profile counter device (21) for preparing profiles of various portions of the leads corresponding to the respective sections from binarized data subjected to processing by the binarization processing device; a calculating device (22,25) for calculating a deviation of each of the prepared profiles from a reference profile and determining an amount of bend of each of the leads; and a device (24) for determining a non-defective or defective state by making a comparison between the amount of bent calculated and allowable values. The respective sections are processed by corresponding binarization levels to measure the bend of leads, so that clear binarized images are obtained even if the illuminance of the various portions of the leads is not uniform.
Abstract:
On décrit un procédé de contrôle d'articles d'habillement afin de déceler des trous. Dans ledit procédé, l'article est éclairé par l'avant sur un fond contrasté et on en forme une image à pixels. On isole les pixels de l'article des pixels du fond en choisissant automatiquement un seuil de gris optimal de binarisation; on binarise l'image à ce niveau, détermine les limites de l'article, contrôle l'uniformité du niveau de gris à l'intérieur des limites de l'article sur l'image binarisée le long de rangées et de colonnes de pixels dans les limites de l'article, et on relève les pixels non concordants. Les trous sont identifiés seulement sur la base des pixels qui se sont révélés non concordants dans le test horizontal et le test vertical.
Abstract:
An engineered video inspection lighting system includes a three-dimensional array (22) of solid-state light emitting diodes (18) focused to an inspection area. A single high-current, low-duration pulse is applied to selected elements of the array. Light thus generated is passed through a diffuser (26) and to a specimen (D). Light reflected from the specimen is received by a lens (32) of a video camera (34) disposed in an interior of the three-dimensional array (22). Data thus obtained is used to determine acceptability of the specimen in accordance with preselected standards.
Abstract:
Un système d'éclairage pour contrôle vidéo comprend un réseau tridimensionnel (22) de diodes électroluminescentes (18) focalisées sur une zone de contrôle. Une seule impulsion à courant élevé et de courte durée est appliquée à des éléments sélectionnés du réseau. La lumière ainsi générée est transmise à travers un diffuseur (26) vers un spécimen (D). La lumière réfléchie par le spécimen est reçue par un objectif (32) d'une caméra vidéo (34) disposée à l'intérieur d'un réseau tridimensionnel (22). Les données ainsi obtenues sont utilisées pour décider si le spécimen peut être accepté en fonction de normes présélectionnées.