System and method for visual quality characterization of...

Details System and method for visual quality characterization of... System and method for visual quality characterization of...

G - Physics

01

M

G01M 11/02 (2006.01) G01N 21/95 (2006.01)

Patent

CA 2640782

Apparatus and method for characterizing perceived visual quality of holographic materials, such as diffraction gratings. A white light source directs a collimated beam onto an embossed material. The first order diffracted light strikes a white background directly in view of a digital camera, which records an image. The image is analyzed to calculate total color intensity of the diffracted light and an estimate of the color distinctness. The data is compared to other samples to determine relative visual quality.

Dispositif et méthode de caractérisation de la qualité visuelle perçue des composantes holographiques, par exemple l'ordre de diffraction. Une source lumineuse blanche dirige un faisceau collimaté dans un composant matricé. La lumière diffractée au premier ordre frappe un arrière-plan blanc directement dans la vue d'une caméra numérique, qui enregistre une image. Cette dernière est analysée afin de calculer l'intensité chromatique de la lumière diffractée et de faire une estimation de la différenciation chromatique

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