Abstract:
Ce procédé comporte les étapes suivantes: prise de vue par un appareil numérique (20) de la dent (4) et d'un teintier (2) placé à proximité de la dent et dans le plan de celle-ci, transmission de l'image ainsi obtenue à un ordinateur (22), analyse chromatique de l'image pour identifier sur celle-ci le teintier (2) et reconnaître les différentes teintes de celui-ci, la disposition des teintes sur le teintier étant mémorisée, analyse chromatique d'une partie (24) de l'image, prédéterminée par un utilisateur, afin de comparer chaque pixel, de cette partie avec les différentes teintes du teintier (2) afin de déterminer pour chaque pixel de la partie (24) de l'image à quelle teinte du teintier elle correspond, synthèse pour faire apparaître les zones correspondant à une même teinte du teintier (2), et affichage des résultats.
Abstract:
Low cost and form factor spectrometers are disclosed. A spectrometer comprises a substrate, a plurality of optical sensors (979), a plurality of spectral filters (977), an optical manifold (976) and one or more processing elements (980). The plurality of spectral filters (977) and the one or more processing elements (980) are mounted on the substrate. The spectral filters (977) are fixedly positioned over at least a group of the optical sensors (979) and fixedly positioned with respect to the substrate. An optical manifold (976) is fixedly positioned over the spectral filters (977). The optical manifold (976) has a plurality of exit ports and an entrance port, wherein light entering the entrance port is transmitted to an interior portion of the optical manifold (976) and a portion of the light is transmitted from the exit ports through some of the spectral filters (977). The spectrometers are disclosed embedded in printing and scanning devices, computer companion devices, scope-type devices and the like.
Abstract:
A method for determining the appearance of an object to be replicated and an apparatus therefor are described herein. The method consists in providing a controlled illumination to illuminate a surface of the object, measuring the object with a CCD camera to collect an image map of a plurality of points on the surface and processing that information to produce an appearance mapping of the object. Calibration of the apparatus is done by measuring calibration patches illuminated with the same illumination. When the apparatus is done in view of replicating the color of an object, a comparison can be done by similarly producing an appearance mapping of the replicate and by comparing it to the appearance mapping of the object.
Abstract:
An interactive dental restoration method, a system for use between a dentist, and a dental restoration laboratory. The method includes identifying a dental restoration need in a patient; designing a preliminary treatment plan that includes design criteria for preparation of a dental prosthesis to be placed in the patient to satisfy the dental restoration need; transmitting the preliminary treatment plan via a communications network to a dental restoration laboratory; and communicating a final treatment plan, including modifications to the preliminary treatment plan where necessary, to the dentist. The system includes a computer-based dental restoration system of a network server (1610) having a database (1630), a network (1620), and at least one local computer (14). The database stores information about materials, procedures, and preparations concerning dental prostheses.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for obtaining color mapping of a dental object.SOLUTION: The object is illuminated over at least first, second and third wavelength bands, that is, over each wavelength band at a time. An image of the dental object is captured at each wavelength band so as to form a set of images of the dental object. An image data value relating to a pixel in a captured set of images corresponds to each of the wavelength bands, and an interpolated image data value proportional to spectral reflectance of the dental object is calculated according to the obtained image data value and according to an image data value obtained from a reference object at the wavelength band. Spectral distribution data on a viewing illuminant are obtained, and a visual color of the dental object is reconstructed according to the calculated interpolated image data value and the obtained spectral distribution of the viewing illuminant.
Abstract:
PROBLEM TO BE SOLVED: To provide an interactive dental restoration method, a system for use between a dentist, and a dental restoration laboratory. SOLUTION: The method includes judging a dental restoration need in a patient, designing a pretreatment plan that includes design criteria for preparation (formation of an anchor tooth) of a dental prosthesis to be placed in the patient to satisfy the dental restoration need; transmitting the pretreatment plan via a communication network to the dental restoration laboratory; and communicating a final treatment plan, including modifications to the pretreatment plan where necessary, to the dentist. The system includes a network server (1,610) having a database (1,630), a network (1,620), and at least one local computer (14). The database stores information about materials, procedures, and preparations (formation of the anchor tooth) concerning the dental prostheses. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method 100 for manufacturing a new shade guide. SOLUTION: First, the color numerical value of a known color element 15 of the shade guide 10 is determined by brightness, hue and saturation. In the next step, the color-to-color distance 16 of the brightness numerical value and/or hue and/or saturation of the previously determined color numerical value is enlarged to determine the numerical value of a new color element. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an image processing system realizing highly accurate color reproduction, inspection and determination, and having a compact, light-weighted and highly portable image pickup section. SOLUTION: The image processing system includes: a photographing device having a plurality of illumination light sources of different spectrum distribution characteristics, an image pickup optical system, and an image pickup element, wherein light is selectively emitted from the plurality of illumination light sources and exposure to light is performed by the image pickup section in cooperation with this light emission to obtain a plurality of spectrum images of an object; a processing device 2 having an image discrimination calculating section for calculating grade data on colors of the object from the obtained object spectrum images, and a color reproduction calculating section 33 for calculating display image data by estimating XYZ tristimulus values from the obtained object spectrum images using input profile and isochromatic function on the photographing device; and a display 22 for displaying the grade data and an image color-reproduced on the basis of the display image data. COPYRIGHT: (C)2009,JPO&INPIT