Abstract: In a computer-implemented method for visualizing the appearances of at least two materials, a first instance (56) of an appearance model is obtained, the first instance being indicative of an appearance of a first material, and a second instance (66) of the appearance model is obtained, the second instance (66) being indicative of an appearance of a second material. A virtual object (72) having a continuous three-dimensional surface geometry is visualized together using a display device (70). The virtual object has first and second portions (72a, 72b) visually separated by a virtual separating element (74) or a blending region. The first portion of the virtual object is visualized using the first instance of the appearance model, and the second portion of the virtual object is visualized using the second instance of the appearance model.

Abstract: First and second sets of appearance attributes are obtained. The first set is associated with a target material. It comprises measured appearance attributes (54) of the target material. The second set is associated with a candidate material. It comprises candidate appearance attributes that are based on appearance attributes associated with one or more reference materials. A geometric model of at least one virtual object (72) is obtained, the geometric model defining a three-dimensional surface geometry. A scene comprising the at least one virtual object (72) is visualized. First and second portions of the virtual object (72) are visualized using the first and second sets of appearance attributes, respectively. Each of the first and second sets of appearance attributes comprises texture attributes in the form of a plurality of sets of image data.

Abstract: A visualization device is provided that includes an actual light box that includes an illumination array for illuminating an actual object (OR) placed in the actual light box; and a rear limiting wall which functions as a screen. The device also includes a computer programmed to spatially display a virtual light box on the screen, such that the virtual light box displayed on the screen appears to form a continuous rearward extension of the actual light box. In addition, a virtual object (OV) may be displayed on the screen, such that the virtual object (OV) is situated in the virtual light box. The combination of an actual light box and a virtual light box allows an observer to realistically assess appearance data rendered onto a virtual object, in a direct comparison with an actual object.

Abstract: A processor-based device for displaying simulated or modeled surface appearances based on surface color and surface texture data stored in a data storage. By selecting different combinations of color and texture, different surface appearances may be modeled and displayed. Also, the device may comprise an orientation sensor. Accordingly, the device may additionally consider the orientation of the device when generating surface appearances.

Abstract: A processor-based device for displaying simulated or modeled surface appearances based on surface color and surface texture data stored in a data storage. By selecting different combinations of color and texture, different surface appearances may be modeled and displayed. Also, the device may comprise an orientation sensor. Accordingly, the device may additionally consider the orientation of the device when generating surface appearances.

Abstract: A visualization device is provided that includes an actual light box that includes an illumination array for illuminating an actual object (OR) placed in the actual light box; and a rear limiting wall which functions as a screen. The device also includes a computer programmed to spatially display a virtual light box on the screen, such that the virtual light box displayed on the screen appears to form a continuous rearward extension of the actual light box. In addition, a virtual object (OV) may be displayed on the screen, such that the virtual object (OV) is situated in the virtual light box. The combination of an actual light box and a virtual light box allows an observer to realistically assess appearance data rendered onto a virtual object, in a direct comparison with an actual object.

Abstract: A processor-based device for displaying simulated or modeled surface appearances based on surface color and surface texture data stored in a data storage. By selecting different combinations of color and texture, different surface appearances may be modeled and displayed. Also, the device may comprise an orientation sensor. Accordingly, the device may additionally consider the orientation of the device when generating surface appearances.

Abstract: A visualization device is provided that includes an actual light box that includes an illumination array for illuminating an actual object (OR) placed in the actual light box; and a rear limiting wall which functions as a screen. The device also includes a computer programmed to spatially display a virtual light box on the screen, such that the virtual light box displayed on the screen appears to form a continuous rearward extension of the actual light box. In addition, a virtual object (OV) may be displayed on the screen, such that the virtual object (OV) is situated in the virtual light box. The combination of an actual light box and a virtual light box allows an observer to realistically assess appearance data rendered onto a virtual object, in a direct comparison with an actual object.

Abstract: A visualization device is provided that includes an actual light box that includes an illumination array for illuminating an actual object (OR) placed in the actual light box; and a rear limiting wall which functions as a screen. The device also includes a computer programmed to spatially display a virtual light box on the screen, such that the virtual light box displayed on the screen appears to form a continuous rearward extension of the actual light box. In addition, a virtual object (OV) may be displayed on the screen, such that the virtual object (OV) is situated in the virtual light box. The combination of an actual light box and a virtual light box allows an observer to realistically assess appearance data rendered onto a virtual object, in a direct comparison with an actual object.

Abstract: A digital printer is equipped with a built-in color measurement device in the form of a colorimeter or spectral photometer, as well as with color management support. The built-in color measurement device is used for control and optimization of the print output, especially for the simplification, optimization and automation of the work processes and for the verification of the output results.

Abstract: The present invention provides a method of digitally generating, via the use of a computer, data indicative of a synthesized appearance of a simulated material having physically plausible appearance attributes. The method includes determining a set of data indicative of the synthesized appearance of the simulated material based at least in part on data associated with the physically tangible source material and at least in part on data of measured attributes of the physically tangible reference material.

Abstract: The present invention provides a method of digitally generating, via the use of a computer, data indicative of a synthesized appearance of a simulated material having physically plausible appearance attributes. The method includes determining a set of data indicative of the synthesized appearance of the simulated material based at least in part on data associated with the physically tangible source material and at least in part on data of measured attributes of the physically tangible reference material.

Abstract: Apparatus, systems and methods are provided for simulating a material. In particular, the disclosed apparatus, systems and methods involve modeling deformation characteristics of a material and generating a virtual representation of a physical interaction with the material based on the modeled deformation characteristics of the material and data representative of the physical interaction.

Abstract: Apparatus, systems and methods are provided for simulating a material. In particular, the disclosed apparatus, systems and methods involve modeling deformation characteristics of a material and generating a virtual representation of a physical interaction with the material based on the modeled deformation characteristics of the material and data representative of the physical interaction.

Abstract: According to the invention, to measure an object (32), for example a hollow, translucent or transparent sphere with respect to a visible light, using Snell-Descartes laws, relating to the propagation of light through the object, an equation is established which associates optogeometric parameters of the object with the result of an observation performed directly on an image of the object, said image being acquired by observing said object, by single-view optical shadowgraphy, said image is acquired, the observation is performed, and at least one geometric or optical parameter of the object is determined using the equation and the result of the observation.

Abstract: Exemplary methods are directed to the linearization and characterization of an image producing device. In the method, a color test chart of the device is reproduced and measured based on a small number of color measurement fields with defined device color values. Associated color values are determined for each color measurement field and used to calculate linearization curves for the device. Additionally, by analysis of the device color values, the measured color values, and device behavior, an expanded color test chart with expanded device color values and associated expanded color values is calculated. The number of color measurement fields in the expanded color test chart is larger than the number of color measurement fields in the original color test chart. An ICC profile for the device is calculated from the expanded device color values and the expanded color values.

Abstract: A color management system using distributed profiles includes a color printer adapted to print controlled color using a custom profile. The color printer system creates a custom profile by reading its initial characterization data, the profiles of the inks and the profile of the paper used in the printer. The color printing system includes a spectral measurement module adapted to generate spectral measurement of an output of the color printer. The printing system computes its initial characterization data by using the output of the color printer, measured by the spectral measurement module. The printing system updates the paper profile, the ink profile and/or the printer characterization data based on the measurement of the spectral measurement module.

Abstract: A processor-based device for displaying simulated or modeled surface appearances based on surface color and surface texture data stored in a data storage. By selecting different combinations of color and texture, different surface appearances may be modeled and displayed. Also, the device may comprise an orientation sensor. Accordingly, the device may additionally consider the orientation of the device when generating surface appearances.

Abstract: A method for measuring three-dimensional objects by single view backlit shadowgraphy. To measure at least one geometrical parameter of such an object, for example the thickness of a hollow sphere, translucent or transparent to visible light, optical characteristics of the object are determined, by which at least one optical model of the propagation of light through the object is established. This model includes an equation that relates the parameter to the result of an observation directly performed on an image of the object, the object being acquired by observing the object by single view backlit shadowgraphy. The image is acquired, the observation is performed, and the parameter is determined by the equation and the result of the observation.

Abstract: For the linearization and characterization of an image producing device, especially a printer, a colour test chart is reproduced and measured according to colour with the device from a relatively small number of colour measurement fields with defined device colour values, whereby associated colour values are determined for each colour measurement field. On the basis of the device colour values and the measured colour values of the test chart, linearization curves are calculated for the device and additionally by analysis of the device colour values and the measured colour values and on the basis of information on the device behaviour derived therefrom an expanded colour test chart with expanded device colour values and associated expanded colour values is calculated, whereby the number of colour measurement fields in the expanded colour test chart is significantly larger than the number of the colour measurement fields in the original colour test chart.