摘要:
A camera identifies a physical object positioned in a workspace. A display displays first digital information into the workspace. A layering module treats the physical object as a first layer in the workspace and treats the first digital information as a second layer in the workspace. A controller controls the visual adjacency of the first and second layers via display of the first digital information.
摘要:
In one example, a projection capture system includes: a visible light projector to project a pattern on to a surface of a GUI control object placed on or above a work surface; a visible light camera to capture an image of the pattern projected on to the surface of the control object; and a controller operatively connected to the projector and the camera. Programming on the controller determines (1) a lateral position of the pattern relative to a reference position associated with the work surface based on the pattern image captured by the camera and (2) a height the pattern above the work surface based on the lateral position of the pattern.
摘要:
Nonoptical properties of inks can be brought to bear in locating ink that is invisible to an automatic sensor. Physical characteristics of inks as liquids can be exploited to reveal their locations with surprising precision. The system includes an optical sensor. Using ink that is visible to the sensor, a preferably fractional fill pattern is printed on a region of a printing medium. Using ink that is invisible to the sensor, calibration indicia or other patterns are printed on particular portions of the same region. Bleed (running together of the liquids of the two inks) tends to convert the fractional fill pattern into a solid fill, within the particular portions that were also printed with the "invisible" ink. Resulting optoelectronic signals provide amply high contrast between (1) fractional fill in the particular portions where the "invisible" ink is applied and (2) the original fractional fill elsewhere. The sensor responds to areas where bleed has converted the fractional fill pattern into a relatively more solid fill. Preferably, to enhance contrast, the visible-ink fractional pattern is printed as aggregations of multiple adjacent pixels, rather than individual, mutually separated pixels--but these aggregations are spaced apart. These two preferences together lead to a pattern that bleeds most effectively of any that were tested. Ideal fill density is roughly twenty-five percent.
摘要:
Nonoptical properties of inks can be brought to bear in locating ink that is invisible to an automatic sensor. Physical characteristics of inks as liquids can be exploited to reveal their locations with surprising precision. The system includes an optical sensor. Using ink that is visible to the sensor, a preferably fractional fill pattern is printed on a region of a printing medium. Using ink that is invisible to the sensor, calibration indicia or other patterns are printed on particular portions of the same region. Bleed (running together of the liquids of the two inks) tends to convert the fractional fill pattern into a solid fill, within the particular portions that were also printed with the "invisible" ink. Resulting optoelectronic signals provide amply high contrast between (1) fractional fill in the particular portions where the "invisible" ink is applied and (2) the original fractional fill elsewhere. The sensor responds to areas where bleed has converted the fractional fill pattern into a relatively more solid fill. Preferably, to enhance contrast, the visible-ink fractional pattern is printed as aggregations of multiple adjacent pixels, rather than individual, mutually separated pixels--but these aggregations are spaced apart. These two preferences together lead to a pattern that bleeds most effectively of any that were tested. Ideal fill density is roughly twenty-five percent.
摘要:
In one example, a projection capture system includes: a visible light projector to project a pattern on to a surface of a GUI control object placed on or above a work surface; a visible light camera to capture an image of the pattern projected on to the surface of the control object; and a controller operatively connected to the projector and the camera. Programming on the controller determines (1) a lateral position of the pattern relative to a reference position associated with the work surface based on the pattern image captured by the camera and (2) a height of the pattern above the work surface based on the lateral position of the pattern.
摘要:
A method of document rehabilitation typically includes providing an original document having a set of desirable markings that are substantially achromatic, and a set of undesirable markings, and generating an image file that includes color data corresponding to the original document. A transform filter may be applied to the image file so that the color data for each undesirable marking is mapped to a non-reproduced color, and the color data for each desirable marking is unchanged.
摘要:
A camera identifies a physical object positioned in a workspace. A display displays first digital information into the workspace. A layering module treats the physical object as a first layer in the workspace and treats the first digital information as a second layer in the workspace. A controller controls the visual adjacency of the first and second layers via display of the first digital information.
摘要:
The invention is a system for determining positional deviation of at least one automatic marking implement from a nominal position, and an apparatus and method for establishing positional accuracy of such an implement. Calibration patterns including diagonal indicia are formed along only one dimension of a printing medium by the implement, or implements. Preferably a sensor automatically scans the diagonal pattern along one dimension, ideally the same dimension--without operating in a second, orthogonal direction. Nevertheless scanning of the diagonal indicia enables development of composite information about deviations in both directions. There is no necessity of either forming or sensing any pattern that is extended (by more than one marking-implement swath) in two different directions. The composite information is combined with information about deviations along the same scanning direction exclusively, to extract in isolated form the deviation information for the second, orthogonal direction. The invention is particularly useful in determining deviations from nominal offsets between plural marking implements, such as thermal-inkjet pens holding ink of different colors in a computer-controlled printer.
摘要:
In one implementation, a method scans a media to provide a first image and a second image. The method further subtracts the first image from the second image.
摘要:
A printing component receives media, applies print imaging thereto, and delivers the media to a first location. The apparatus selectively applies at least one calibration mark as the print imaging. An imaging component receives the imaged media at a second location and produces scan data representative thereof. The apparatus selectively analyzes the at least one calibration mark and produces calibration data.