138 results about "Color response" patented technology

An imaging system suitable for use in a vehicle includes an imaging sensor having a two-dimensional array of photosensing elements, an image processor for processing image data captured by the imaging sensor, and a display for displaying images responsive to the image processor. The array has a plurality of sub-arrays, with each of the sub-arrays having a first pixel sensing primarily a first color, a second pixel sensing primarily a second color, a third pixel sensing primarily a third color and a fourth pixel sensing primarily infrared radiation. The image processor processes the output of the fourth pixel to determine an infrared component of the imaged scene and subtracts the infrared component from the outputs of the first, second and third pixels to obtain a more accurate or true color response for the pixels and to limit or avoid infrared color wash-out.

A method of forming a full-color output image from a color filter array image having a plurality of color pixels having at least two different color responses and panchromatic pixels, comprising capturing a color filter array image using an image sensor including panchromatic pixels and color pixels having at least two different color responses, the pixels being arranged in a repeating pattern having a square minimal repeating unit having at least three rows and three columns, the color pixels being arranged along one of the diagonals of the minimal repeating unit, and all other pixels being panchromatic pixels; computing an interpolated panchromatic image from the color filter array image; computing an interpolated color image from the color filter array image; and forming the full color output image from the interpolated panchromatic image and the interpolated color image.

A lighting system is disclosed. The lighting system includes a first lighting module and a second lighting module connected parallel to the first lighting module. The first lighting module generates light at a first color temperature and the second lighting module generates light at a second color temperature. The first lighting module has a first activation voltage and the second lighting module has a second activation voltage. The two lighting modules generate light when the current flow through them. When input voltage is changed, not only does the amount of current flowing through the two modules change, but also ratio of the amount of current flowing through the two lighting modules changes. The change in the ratio changes the color temperature of the light produced by the lighting system which is a combination of the light produced by the two modules.

An image sensor is disclosed for capturing a color image, comprising a two-dimensional array of pixels having a plurality of minimal repeating unit wherein each repeating unit is composed of eight pixels having five panchromatic pixels and three pixels having different color responses.

A method is described for forming a full-color output image from a color filter array image comprising capturing an image using an image sensor including panchromatic pixels and color pixels having at least two different color responses, the pixels being arranged in a rectangular minimal repeating unit wherein for a first color response, the color pixels having the first color response alternate with panchromatic pixels in at least two directions, and for each of the other color responses there is at least one row, column or diagonal of the repeating pattern that only has color pixels of the given color response and panchromatic pixels. The method further comprising, computing an interpolated panchromatic image from the color filter array image; computing an interpolated color image from the color filter array image; and forming the full color output image from the interpolated panchromatic image and the interpolated color image.

Implant regions of a first conductivity type are formed under at least a portion of a first pixel sensor cell and of a second pixel cell to limit the depth of the photodiode collection/depletion region and limit the pixel's color response. To further reduce cross-talk between adjacent pixels and to decrease blooming, an anti-blooming isolation region of a second conductivity type is formed in the substrate and below the stop implant regions of the first conductivity type.

A method, test reagent and device usable as a test strip for detecting toxic ammonia levels in water samples such as aquarium water. The volume of the water to be tested contacted with a soda lime reagent to raise the pH to at least 10, and simultaneously contacted with a hydrophobic barrier membrane capable of allowing only ammonia gas to pass through. The membrane is coated with a pH chromogenic indicator mixture which changes color if ammonia gas passes through. The color response of the sample is compared with standard color charts to determine the toxic ammonia potential.

Creation of a reverse look-up table from a forward look-up table for a color device. Indexes to the forward look-up table span all possible color stimulus values for the color device in a device dependent color space. Outputs from the forward look-up table span a color gamut of corresponding color response values for the color device in a device independent appearance color space. The reverse look-up table maps a color response value in the device independent appearance color space to a color stimulus value in the device dependent color space. Indexes to the reverse look-up table span beyond the color gamut of color response values for the color device, and outputs from the reverse look-up table span beyond all possible color stimulus values for the color device. According to the invention, a first portion of the reverse look-up table, in which indexes fall within the color gamut, is populated by search and interpolation in the forward look-up table for color stimulus values corresponding to color response values of the indexes to the first portion of the reverse look-up table. A second portion of the reverse look-up table, in which indexes fall outside of the color gamut, is populated by extrapolation from extrapolation color stimulus values. The extrapolation color stimulus values are found by search and interpolation in the forward look-up table for color stimulus values corresponding to color response values near a boundary of the color gamut.

The invention pertains to the technical field of gasochromic film, in particular to a method for improving gasochromism speed of the gasochromic film. The invention adopts sol-gel method for preparing the stable solution containing various metal oxides and the compound solution thereof; and various methods are employed for coating transparent and even gasochromic film on common glass or polished silicon wafer, and ultraviolet or high energy ray and high energy-particle mixing with catalyst are employed in the gasochromic film method so as to change the structure of film and enhance the coloring response speed of the gasochromism of the sol-gel technique, shorten coloring saturation time. Compared with the non treatment film, the gasochromism efficiency are greatly improved; and the performance is the same as the gasochromism produced by magnetron sputtering method, while, cost is greatly reduced; and the produced film by the invention also has the same advantages as the electrochromic film. The invention makes up the shortages of gasochromism smart window made by sol-gel preparation method, thus the smart window technique can be more mature.

A method for calibrating specialty toner, the method includes providing a substrate; depositing an invariant or substantially invariant laydown of a color toner on the substrate; depositing a varying laydown of the specialty toner; fusing the color toner and specialty toner to the substrate; measuring a color response signal of the substrate, color toner, and specialty toner; calculating a color response curve as function of the varying laydown of the specialty toner; comparing the color response curve to a target color response curve; and modifying printing parameters of the specialty toner to set the color response curve equal to or substantially equal to the target color response curve.

A display color-correcting system is provided. Color response values are measured that go into the vertices of polyhedra in a cubic color output space of the display. A set of corresponding values for the display is built from intermediate values determined between the measured color response values. The intermediate values are determined by decomposition and interpolation of interpolation volumes in the cubic color output space. Each of the interpolation volumes is the combined volume of a selected polyhedron within the cubic color output space and a predetermined volume of space between the selected polyhedron and the next polyhedron within the cubic color output space. The set of corresponding values is converted into decoupled RGB adjustment values that specify the RGB signals independently for the display to produce corrected colors. The RGB adjustment values are saved into one or more look-up tables.

The invention provides a pH color-response sensing type micro-nanofiber, a preparation method and application thereof, which relate to a response sensing type micro-nanofiber, a preparation method and application thereof. The invention solves the problems of low sensitivity and long reaction time of the traditional poly-Schiff base film for acidichromism. The diameter of the micro-nanofiber is between 10 nanometers and 2 micrometers, and the micro-nanofiber is prepared from a spinning solution through an electrostatic spinning technology. The preparation method comprises the following steps of: firstly, dissolving the poly-Schiff base into a polymer solution to prepare the spinning solution, and then, preparing the micro-nanofiber by the electrostatic spinning technology. The micro-nanofiber is applied to a pH color response sensor, is evenly distributed, is in bunched fiber or a felty film and has the advantages of sensitive pH color response and short metachromatism time (0.5s-1s). The pH color-response sensing type micro-nanofiber has obvious color response for 0.1-10000ppm response matters. The preparation method is completed at room temperature, has the advantages of short preparation time, convenient operation and low energy consumption, and is convenient to practice.

The invention relates to a color response calibration method in a colored structure light three-dimensional measurement system, which comprises the following steps of: designing an auxiliary calibration image containing six sub-calibration areas, wherein the six sub-calibration areas comprise three basic pure colors, and each pure color has two brightness variation trends; turning the auxiliary calibration image into a white flat plate, carrying out color segmentation on the collected response image, and obtaining six sub-calibration mapping areas; carrying out average operation on the two sub-calibration mapping areas of each basic pure color according to the direction of the same variation trend; taking the result of the average operation as independent variable and ideal response curve as dependent variable for second-order polynomial fit, and obtaining the response function of color response calibration; and finally, according to the response function, calibrating the measurement colored image obtained in colored structure light three-dimensional measurement.

A display device calibration system is provided. The overall color response of a display family is characterized, and the idiosyncratic color response characteristics of the display family are determined. The idiosyncratic color response characteristics of the display family are related to respective idiosyncratic color response points. Individual idiosyncratic color response point values for an individual member of the display family are determined. The color response of the individual member of the display family is specified from the individual idiosyncratic color response point values of the individual member of the display family and the overall color response of the display family.

A method that includes obtaining, using a processor, reflectance data from a target coating and calculating, using the processor, virtual color response data using one of at least one Kepler's laws of planetary motion equation and at least one derivation of at least one Kepler's laws of planetary motion equation. The method also includes generating, using the processor, a coating formulation that is the same or substantially similar in appearance to the target coating.

The invention discloses a pH color response sensing micro-nano fiber, a preparation method and the application thereof, relating to a response sensing micro-nano fiber, a preparation method and the application thereof, and aiming to solve the problem of low sensitivity and long reaction time existing in current polyschiff base film used in acid-induced discoloration. The diameter of the micro-nano fiber is 10 nanometers to 2 microns and prepared from spinning solution through the electrostatic spinning technology. The preparation method comprises the following steps: dissolving polyschiff base into polymer solution so as to prepare spinning solution firstly; and then using the spinning solution to prepare the micro-nano fiber through the electrostatic spinning technology. The micro-nano fiber is applied to a pH color response sensor. The micro-nano fibers of the invention are distributed uniformly, and displayed as bunched fibers or blanket films; and have the advantages of high pH color response sensitivity and short discoloration reaction time, wherein the discoloration reaction time is 0.5 s to 1s, and the micro-nano fiber has obvious color response to the response substances (0.1 to 10000 ppm). The preparation method is completed at room temperature and convenient in operation, low in energy consumption, and facilitates to practical use.

The invention discloses a color response testing and correcting device and method for industrial color cameras. The device comprises an RGB three-color LED (Light-Emitting Diode) array light source, an LED driving controller, an integrating sphere, a colorimeter, industrial cameras to be detected, a data acquisition card and a computer. The method comprises the following specific steps: adjusting the RGB three-color LED array light source to output standard testing light, acquiring data of a plurality of images, calculating a mean value of camera RGB pixel output responses of different images, and building a response coefficient correction table with consistent RGB pixel point response outputs under the same RGB illumination intensity; and adjusting the light source to other standard illumination conditions, acquiring data of a plurality of images under corresponding illumination conditions, and calculating a mean value of the camera RGB pixel output responses of different images. Camera color correction models under different standard illumination conditions are subjected to least square fitting in order to match camera output colors with standard colors. Moreover, the models are input into a camera color correction module to finish correction.

An apparatus and method are provided for displaying an image. A process of human color recognition and a process of human color response are analyzed to find a reference brightness value of an image such that a dark region of the image can be correctly detected. A brightness of the image is adjusted such that a specific region is not excessively bright or dark. Accordingly, a user can recognize the image. The apparatus and method can be applied to an image display device having a Liquid Crystal Display (LCD), such as a portable wireless terminal having a small-sized LCD.