Abstract:
A method and a system for processing color-measurement data are disclosed. The method and system include detection of a predetermined characteristic in a data stream originating from or sent to a remote color-measuring instrument, use of the predetermined characteristic to locate color-measurement data in the data stream, and interception of the color-measurement data. The intercepted color-measurement data may be advantageously processed, e.g., by profiling or the like.
Abstract:
Le procédé d'évaluation consiste à représenter, dans un espace calorimétrique normalise (Lab) , la combinaison pigmentaire (B, W, Cl et C2) par un volume, et à voxelliser ledit volume, l'ensemble des voxels pleins resultants correspondant a l'ensemble des teintes susceptibles d'être obtenues à partir de ladite combinaison pigmentaire, et chaque voxel plein (V2) correspondant à une proportion déterminée entre les pigments (B, W, Cl et C2) la composant.
Abstract:
A code is deposited on an underside of a ceramic product, such as a tile (90), prior to firing of the product, such that the code is optically readable when the product is fired. A manufacturing facility is provided, comprising means such as a press (26) for forming granular ceramic material into a formed, pre-fired "green" product, means such as a printer (25) for applying an optically-readable heat-resistant code to an underside of the product and a kiln (34) for firing the green product.
Abstract:
A method and apparatus for color matching are provided, in which paint recipe neural networks are utilized. The color of a standard is expressed as color values. The neural network includes an input layer having nodes for receiving input data related to paint bases. Weighted connections connect to the nodes of the input layer and have coefficients for weighting the input data. An output layer having nodes are either directly or indirectly connected to the weighted connections and generates output data related to color values. The data to the input layer and the data from the output layer are interrelated through the neural network's nonlinear relationship.
Abstract:
The present invention provides for an imaging system that obtains, as well as a method for obtaining, the colorimetric value of a plurality of points in a scene when the scene is lit by a source of illumination (132). The system comprises an imaging detector (133), imaging optics that receive light from the scene and direct it to the detector, a tunable filter responsive to applied electrical signals that filters the spectrum of light passing therethrough, as a control circuit (131) for acquiring and storing a plurality of images from the detector while the tunable filter expresses a plurality of predetermined filter response functions in response to applied electrical signals, and for determining the colorimetric values from the stored images, wherein each of the filter response functions has substantial transmission at a plurality of wavelengths.
Abstract:
A colour selection system is provided which comprises a memory for storing grouping information which categorises each of a plurality of colours into one of a plurality of colour groups. In response to an initial colour selection made by a user, the system determines the group in which the selected colour belongs and generates a selection of colours, using colours which belong to the determined group, from which a user can select one or more further colour in addition to the initially selected colour. The groups of colours are chosen so that the user can only select colours which are deemed to be "harmonious" with each other.
Abstract:
A method is provided for combining a first physical object and a second physical object. A first locating point (76) is defined on a first physical objet (72), and a first location of the first locating point is determined by taking at least two measurements with respect to a Cartesian coordinate system. Similarly, a second locating (76) point is defined on a second physical object (72). After combining the first physical object with the second physical object, a second location of the second locating point is determined by taking at least two measurements. The Cartesian measurement data is transformed into vector data before mean values, including directional mean values, are generated by performing statistical analysis in a Polar coordinate system. The first location can then be analyzed with respect to the second location using these mean values. This method can be applied to numerous applications, including the assembly of two manufactured automotive parts (FIG. 22), exact color match of paint (FIG. 27), or assessing the fit between an implant abutment and the prosthesis framework (FIG. 17).
Abstract:
The present invention provides for an imaging system that obtains, as well as a method for obtaining, the colorimetric value of a plurality of points in a scene when the scene is lit by a source of illumination. The system comprises an imaging detector, imaging optics that receive light from the scene and direct it to the detector, a tunable filter responsive to applied electrical signals that filters the spectrum of light passing therethrough, and a control circuit for acquiring and storing a plurality of images from the detector while the tunable filter expresses a plurality of predetermined filter response functions in response to applied electrical signals, and for determining the colorimetric values from the stored images, wherein each of the filter response functions has substantial transmission at a plurality of wavelengths.
Abstract:
A digital camera (12) connects to a tooth shade analyzer subsystem, e.g., a digital video processor (14), and a color display monitor for the electronic determination of the color of patient's teeth. Preliminarily, the camera captures (26) a series of digital color images of tooth shades corresponding to reference shade guides (34), and electronically compares the reference shades to an image of the patient's tooth. In a preferred embodiment the comparison is done over a set of pseudo-pixels, each corresponding to a group of pixels in an high-resolution camera. Once a match is found, it is communicated to a user of the system (52). In a specific embodiment the camera is equipped with a sleeve and illumination subsystems that help reduce the variations in the color of digital images due to external factors.
Abstract:
A method of and apparatus (10) for determining if a given data point (52) having three parameters falls within a population defined by more than four known data points (51), each data point (52) having the three parameters, the method and apparatus involving determining if the given data point falls within any of a plurality of tetrahedrons, each of the tetrahedrons having four vertices, each of the vertices of each tetrahedron being defined by one of the known data points.