Methods and apparatus employing multi-spectral imaging for...

B - Operations – Transporting – 07 – C

Patent

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Details

B07C 5/00 (2006.01) B07C 5/34 (2006.01) G06K 7/10 (2006.01) G06K 19/06 (2006.01) G06K 19/14 (2006.01)

Patent

CA 2338633

A multi-spectral imager and the applications of same for the marking and coding of, for example, textiles, linens, garments, documents and packages for high-speed machine identification and sortation. Specific uses include garment and textile rental operations, laundry operations, and the postal and mail sortation of documents and packages. Methods and apparatus are provided to identify items via information encoded within an applied mark, as well as a novel mark reading/decoding scheme. A method is disclosed for printing fluorescent marks (3) on an item, such as a heat-sealable label (1), to generate a unique identification number or indicia, as well as a reader system (10) for reading applied marks (3). The reader system (10) includes an illumination source (12) that excites the fluorescent marks (3) in combination with a color sensitive device, such as a camera (14), which is "blind" to the illumination wavelength (36) but which can discern the fluorescence color and a relative spatial order of the fluorescent marks (3), wherein the information is encoded.

La présente invention concerne un dispositif d'imagerie multispectrale et ses applications pour le marquage et le codage. Les domaines d'application sont notamment l'identification et le tri automatique à grande vitesse de textiles, de linge de maison, de vêtements, de courrier et de paquets, et plus particulièrement la location de vêtements et de linge ainsi que le tri postal (courrier et paquets). L'invention concerne également, d'une part des procédés et des dispositifs d'identification d'objets via une information codée dans une marque apposée, et d'autre part une logique de lecture/décodage. L'invention concerne enfin, non seulement un procédé d'impression de marques fluorescentes (3) sur un objet tel qu'une étiquette thermosoudée (1) de façon à générer un numéro d'identification ou une marque qui restent uniques, mais aussi un système de lecteur (10) pour la lecture de telles marques apposées (3). En l'occurrence, le système de lecteur (10) comporte une source d'éclairage (12) excitant les marques fluorescentes (3) en association avec un dispositif chromosensible tel qu'une caméra (14) qui est aveugle à la longueur d'ondes d'éclairage (36), mais qui est capable de distinguer la couleur de fluorescence ainsi qu'un ordre spatial relatif des marques fluorescentes (3) utilisées pour le codage de l'information.

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