Abstract:
Ce procédé comporte les étapes de : - sélection d'un espace couleur indépendant des périphériques en tant qu'espace de conception; - obtention d'un gamut source du périphérique source; - obtention d'un gamut destination du périphérique destination; - mise à disposition d'une interface graphique permettant d'afficher, dans l'espace de conception, les gamuts source et destination, - discrétisation de l'espace de conception pour obtenir un ensemble de points de contrôle, et fournir deux grilles, respectivement source et destination, chaque point de contrôle de la grille source étant apparié à un point de contrôle de la grille destination; - réception d'événements utilisateur correspondant à des déplacements des points de contrôle de la grille source et/ou de la grille destination; - calcul automatique d'une transformation colorimétrique à partir d'un champ de vecteurs des déplacements des points de contrôle appariés.
Abstract:
An input device for use in input of data to a document screen displayed on a touch panel of a terminal device according to the present disclosure detects a touch operation performed on the touch panel in a detection unit. When the touch operation is detected, the input device transmits device information including at least a device ID of the input device to the terminal device.
Abstract:
To provide a sign authentication system and method for authenticating the originality of an object having a sign such as a seal or a signature or a pattern which can be deemed as a sign, making counterfeit very difficult even if the mechanism of authentication is revealed, obviating the need for being additionally provided with a special device such as an IC chip used for authenticating the originality. A sign authentication system provides reading a sign such as a personal seal impression as color information for each mesh division, extracting feature points from the color information and storing them, and creating a code for authentication from the feature points. The sign is made with an ink containing color material particles smaller than the mesh division. The feature points on the basis of variation of color information caused are extracted when the mesh division is shifted.
Abstract:
An image forensics system estimates a camera response function (CRF) associated with a digital image, and compares the estimated CRF to a set of rules and compares the estimated CRF to a known CRF. The known CRF is associated with a make and a model of an image sensing device. The system applies a fusion analysis to results obtained from comparing the estimated CRF to a set of rules and from comparing the estimated CRF to the known CRF, and assesses the integrity of the digital image as a function of the fusion analysis.