摘要:
A color analysis system includes a light source and a sensor configured to provide an output signal in response to reflected light received from the first light source. A controller receives the output signal and is configured to determine an adjustment factor based on the output signal, and determine a color based on the output signal and the adjustment factor.
摘要:
An apparatus for backing up a digitally stored image includes a substrate on which the image and digital restoration data corresponding to the digitally stored image are printed on the substrate. The apparatus may be scanned to restore the image printed thereon to its original digital form.
摘要:
In a method for processing pixel values of an image in a first representation to a second representation having a yellow-blue axis, a red-green axis, and a luminance axis, the pixel values are converted from the first representation to the second representation by converting the pixel values to a more opponent color encoding using a logical operator to compute a yellowness-blueness value of each of the pixel values and using scaled multiplications to compute a redness-greenness value of each of the pixel values in the second representation. In addition, the converted pixel values are outputted.
摘要:
Optical properties of a screen on which an image is being projected are considered. A patterned surface is given a predetermined pattern of color pixels whereby a degree of wavelength selectivity is employed to improve the color qualities of the projected image. A system is provided wherein there is a matching of emission characteristics of a projector to the screen's reflective characteristics.
摘要:
The invention is directed towards method and apparatus for performing local color correction. One embodiment of the invention is a two-part process. The first part derives an image mask from an input image. In some embodiments, the mask is an inverted, low-pass filtered, monochrome version of the input image. The second part combines the derived mask with the input image through a non-linear operation. In some embodiments, the combination operation is a variable exponential function that has the mask values as part of its exponent and the pixel values as part of its base.
摘要:
A system and method is disclosed for managed distribution of publication assets. The method discloses: protecting a set of assets, retrieved from the server system, in a publication component; transferring the publication component with the protected assets from the server to client computers; previewing the publication component on one client computer based on the set of protected assets; and producing the publication component on another client computer based on the set of protected assets. The system discloses: a server system; a publication management module for: applying a set of fonts to a publication component; and transferring the publication component with the protected fonts from a server to client computers; a preview module for previewing the publication component on one client computer based on the set of protected fonts; and a production module for producing the publication component on another client computer based on the set of protected fonts.
摘要:
Embodiments of the present invention disclose a system and method for dynamic color correction of an imaged object. According to one embodiment, an image containing an object and color chart is received. The color chart includes a range of color values, while at least one feature and an associated correctable color value is determined from the imaged object. Furthermore, a target color value substantially corresponding to the correctable color value is identified. Based on the identified target color value, the correctable color value associated with the feature is then corrected.
摘要:
A method and system for selecting image elements, such as image pixels or vectors, of a digital image provide a set of lexical classifiers, such as a set of color names, which characterize a visual attribute of the image elements such as color. A lexical classifier is assigned to each image element, e.g. by a transform between the image element color values under the original numerical color encoding model of the image and the set of lexical classifiers. A reference lexical classifier is selected, e.g. by selecting an image element and determining its associated lexical classifier, and the image elements are then selected if their lexical classifier corresponds to the reference lexical classifier. The selected image elements may then be acted on as a group.
摘要:
Gray component or undercolor in an input image is quantitatively determined, and reduced in amounts nonlinearly related to the quantity of undercolor. The reduced and added signals are applied to control printing by, preferably, scanning inkjet printheads. The total undercolor inking is a substantially monotonic function of the quantity of undercolor. Preferably the reducing and adding are performed in a subtractive-colorant color space, e.g. CMYK space. Preferably image data is initially accepted or generated in terms of additive RGB signals, and these are converted into the subtractive domain. Preferably the reducing and adding means operate only above an undercolor threshold of about twenty to thirty-five percent; and total inking is made between one hundred fifty and two hundred fifty percent when the signals are all gray component. Initial very gradual increases from a threshold are important, for consistent, smooth, regularized dynamic-response in tonal gradations. Preferably these increases follow a spline function. The system works in virtually the same way for black input as chromatic input. Corresponding method and apparatus modules characterize the invention. Automatic operating instructions for the apparatus (or method) modules are stored. Results include minimizing ink usage, consistent with an optimal black, and nearly linearizing composite grays.