10 results about "Subtractive color" patented technology

The invention relates to the technical field of package printing, in particular to an offset printing lithographic plate high-saturation package color reduction printing method, device and equipment and a medium, and the method comprises the following steps: obtaining a standard Lab color value of a large-area intermediate color in a target image based on an international standardized color management system; separating an intermediate color in a target image to a user-defined spot color layer according to the standard Lab color value, and determining an overprinting proportional relation between basic CMY three colors and the intermediate color according to the user-defined spot color layer; screening optimization processing is carried out on an area corresponding to the overprinting proportional relation so as to reduce interference of basic CMY three colors on an intermediate color; and generating a standardized printing file containing the spot color layer and the basic CMY color, and finishing printing through an offset printing process. The offset printing method has the effect of solving the problems of insufficient color saturation and poor color stability in existing offset printing package printing.

A subtractive color change system for displaying a selected color to a viewer and a method of changing color. The system includes a layered assembly having transparent panels of primary and key colors, with a fixed-color background behind the layered assembly. The subtractive color change system may have a control unit to individually control the intensities and values of the primary color panels to render a color and to control the intensities and values of the panels in the layered assembly to reduce differences between the color rendered and the selected color and to display the selected color to a viewer.

This enables high productivity in the manufacturing of printed materials that involve the use of special inks and color inks. [Solution] A method for manufacturing security printed material includes generating print data containing multiple print data elements corresponding to multiple pixels from first and second image data that reproduce an image containing a first image and an image containing a second image, respectively, wherein a first group of pixels consisting of a part of the pixels displays the first image, and each of the print data elements corresponding to the above part of the pixels includes a gray value of either subtractive color mixing or additive color mixing; a second group of pixels consisting of another part of the pixels displays the second image, and each of the print data elements corresponding to the above other part of the pixels includes a gray value of either subtractive color mixing or additive color mixing; the first image data includes a plurality of first image data elements, each containing a gray value of additive color mixing; and the second image data includes a plurality of second image data elements, each containing a gray value of subtractive color mixing.

The application relates to the technical field of color display devices, and discloses a color display structure controlled by a motor array, which comprises a display panel, a plurality of groups of color block rotating structures are equidistantly distributed on the upper surface of the display panel, and a motor is fixedly installed at the bottom of the display panel, wherein the number of the motor is the same as that of the color block rotating structures; the color block rotating structure comprises a base, the base is rotationally connected with a limiting panel, a color sheet is fixedly installed on the upper surface of the base, a connecting gear sleeve is fixedly installed at the bottom of the base, and the connecting gear sleeve is fixedly connected with the output end of the motor through the display panel. Compared with the display technology of the common additive color principle on the market, the application has the advantages of low energy consumption, creativity and artistic performance; compared with the printing advertisement of the subtractive color principle on the market, the application has the advantages of dynamic display, real-time updating, interactivity, a new artistic creative expression approach and simple maintenance.

The invention discloses a color management method and system based on a subtractive color method, a medium and a program product, and relates to the technical field of novel illumination, and the method comprises the steps: building an absorption coefficient matrix of a CMY color film for a monochromatic light source, and fitting a background spectrum model of a CTO color film; controlling each CMY color film to cut into a light path of the lighting equipment according to a preset step length, collecting gray scale brightness data of each CMY color film, and generating a gray scale compensation table through symmetric difference operation of the reference curve and the measurement curve; convex hulls of all achievable color points are calculated, and a displayable color gamut of the lamp is defined; judging whether the target chromaticity coordinate is in a displayable color gamut of the lamp or not; if yes, theoretical control parameters of all CMY color chips are solved, and actual motor PWM driving signals are output in combination with the gray scale compensation table; during CTO color temperature correction, the absorption coefficient matrix and the background spectrum model are corrected according to the target color temperature and the current CTO color chip parameters, and an actual PWM driving signal is obtained; the problem of color temperature consistency caused by color film difference is solved, and the color temperature adjusting precision is improved.

A method for controlling a lighting fixture for emitting light having a target color having an subtractive color mixing system, the method comprising: receiving target information indicative of, such as defining, the target color, calculating a target control setpoint for each subtractive filter within the plurality of subtractive filters based on the target information and calibration data, the calibration data for a plurality of sets of calibration control setpoints being indicative of emitted color, and controlling each of the subtractive filters in accordance with each calculated target control setpoint for each of the subtractive filters.

The utility model discloses a reflective color filter structure which comprises a substrate, a plurality of nanostructures distributed in an array mode are arranged on the substrate, and the nanostructures comprise more than two layers of metal nanostructures and more than two layers of medium nanostructures. The metal nanostructures and the medium nanostructures are alternately laminated from bottom to top, and the top layer and the bottom layer of each nanostructure are both metal nanostructures. According to the light filtering structure, light filtering is achieved through the color reduction principle, the sensitivity to angles is low, and light filtering can be achieved within the wide angle range; by modulating the period or the duty cycle of each nano structure, the filtering effect of different colors can be realized; the reflection efficiency of the reflection valley is very low, and the light energy utilization rate is greatly improved.

The invention relates to the technical field of graphic design, in particular to a graphic design teaching auxiliary device, which comprises a positioning disc, a color filter disc, a color filter disc and a color filter disc, three damping shaft bodies are rotationally mounted on the color filtering disc, a convex pipe is mounted at the circle center of the color filtering disc, a light source outputting upwards is mounted in the convex pipe, and the three damping shaft bodies are distributed on the periphery of the convex pipe in a circumferential array mode; light filtering sets are designed on the outer walls of the three damping shaft bodies, each light filtering set comprises a bearing ring rotationally installed on the outer wall of the corresponding damping shaft body, six lantern ring parts are distributed on the outer wall of each bearing ring in a circumferential array mode, and light filters are installed in the lantern ring parts; any optical filter can move to the position over the protruding pipe through rotation of the bearing ring. According to the invention, students can be helped to understand the subtractive color model more visually, and the students can also directly experience adjacent colors, complementary colors and three-color groups so as to fully understand or teach color theories.

A method for controlling a subtractive color mixing system in a light fixture, comprising a light source, the subtractive color mixing system comprising a plurality of subtractive color filters, and an additional filter. The method is for emitting light having a target color upon having traversed the additional filter, such as upon having traversed the subtractive color mixing system and the additional filter and optionally being emitted from the light fixture. The method comprising receiving target information indicative of, such as defining, the target color, calculating a target control setpoint for each subtractive color filter within the plurality of subtractive color filters based on the target information, and calibration data, which for a plurality of sets of calibration control setpoints is indicative of an emitted color, controlling each of the subtractive color filters according to each calculated target control setpoint for each of the subtractive color filters.