106results about How to "High color accuracy" patented technology

A writing device is provided for color electronic paper which is capable of performing full color display. The writing device includes a head unit, a head unit moving mechanism which moves the head unit in a first direction, a feeding mechanism which moves electronic paper, and a controller. The head unit includes a writing head, an LED which emits light of three primary colors, an image sensing element consisting of a CMOS sensor, and an optical system. The writing head includes an optically transparent head main portion provided with pixel electrodes, and a common electrode (counter electrode). In the controller, an arrangement of three types of microcapsules in a microcapsule layer is detected to perform electric field formation for each of the pixel electrodes based on a detection result.

A hand-held measurement device for appearance analyses includes a measurement array which comprises a number of illumination means for applying illumination light to a measurement field in at least three illumination directions and a number of pick-up means for capturing the measurement light in at least one observation direction. The illumination directions and the observation directions lie in a common system plane. At least one pick-up means is embodied to spectrally gauge the measurement light in a locally integral way, and at least one imaging pick-up means is embodied to gauge the measurement light in terms of colour in a locally resolved way. The spectral pick-up means and the locally resolving pick-up means are arranged such that they receive the measurement light reflected by the measurement field under the same observation conditions and in particular from the same observation direction.

An illumination system adapted to a projection apparatus is provided, including a light source module, a light color modulating module, and a control unit. The light color modulating module has a plurality of light color modulating units and is disposed in a transmission path of a light beam. The light color modulating module is capable of moving so that the light color modulating units move into the illumination region of the light beam. When the control unit determines that a boundary of any two adjacent light color modulating units has moved into the illumination region of the light beam, the control unit switches the light source module to an off-state. When the boundary of any two adjacent light color modulating units has moved away from the illumination region of the light beam, the control unit switches the light source module to an on-state. An illumination control method is also provided.

An automated utility for obtaining an identification of a new type of media from a user and searching remote databases to locate and retrieve properties of the new media to set appropriate printing parameters, including colorimetric parameters. To print on a new media, the user can enter a common identifier of the new media, or it can be automatically detected by the user's printer. Based on this information, remote databases can be searched to locate properties of the new media. The properties can be used to automatically set up an application or computer to use the new media on an intended printer. In addition, if no color profiles are found of the new media and the user's intended printer, a new color profile can be derived from pre-existing color profiles located in the remote databases. Starting with a similar color profile, a difference in colorimetric properties between the media of the similar color profile and the new media can be used to translate the similar color profile into a new color profile. To derive the new color profile for the new media with the intended printer, the colorimetric properties of the new media are substituted after the rest of the color profile has been translated.

The present invention proposes a method and a computing system for deducing ink thickness variations from spectral reflectance measurements performed on a printing press or on a printer. The computed ink thickness variations enable controlling the ink deposition and therefore the color accuracy, both in the case of high-speed printing presses and of network printers. Ink thickness variations are expressed as ink thickness variation factors incorporated into a spectral prediction model. The method for computing ink thickness variations comprises both calibration and ink thickness variation computation steps. The calibration steps comprise the calculation of ink transmittances from measured reflectances and the computation of possibly wavelength-dependent ink thicknesses of solid superposed inks. Wavelength-dependent ink thicknesses account for the scattering behavior of non-transparent inks or of inks partly entering into the paper bulk. The ink thickness variation factors are fitted by minimizing a distance metric between the reflection spectrum predicted according to the thickness variation enhanced spectral prediction model and the measured reflection spectrum. The ink thickness variation enhanced spectral prediction model can be applied both in the visible wavelength range and in the near-infrared wavelength range. This enables computing unambiguously the thickness variations of the cyan, magenta, yellow and black inks. Furthermore, a spectral reflection may be measured over a stripe of a printed page and used to predict the ink thickness variations occurring within that stripe. This enables the real-time control of the ink deposition process on a printing press.

An array of vertical color filter (VCF) sensor groups, each VCF sensor group including at least two vertically stacked, photosensitive sensors. Preferably, the array is fabricated, or the readout circuitry is configured (or has a state in which it is configured), to combine the outputs of sensors of multiple sensor groups such that the array emulates a conventional array of single-layer sensors arranged in a Bayer pattern or other single-layer sensor pattern, and such that the outputs of at least substantially all of the sensors of each of the VCF sensor groups are utilized to emulate the array of single-layer sensors.

The invention discloses a four-color light-emitting diode (LED) display sub-pixel restructuring method, and relates to an LED display. A single-frame high-resolution original image is sampled into a multi-frame image suitable for a low-resolution LED display through a pixel sampling algorithm aiming at three different LED display pixel structures of vertical stripes of red, green, blue and white (RGBW), a chessboard structure and a grid, and the image is displayed on the LED display. The brightness value shared by the RGB is replaced with a white LED by transforming the RGB color components of the separated low-resolution image into the luminance components of RGBW LED. The traditional pixel of the LED display is divided into single LED by using an LED display pixel restructuring technology, and adjacent LEDs of different pixels are restructured to form a new visual pixel. One-one mapping is carried out to each low-resolution image and the pixels of the LED with sub-pixels restructured, and the multi-frame low-resolution image is displayed in a mode of time division multiplexing.

A mechanically adjustable color conversion system for illumination devices comprised of light sources oriented linearly or in an array located under a fluorescent dyed clear or defused plastic element which has holes that carefully align with the light sources, dyed element which can be moved thru some simple mechanical fashion in such a way that there can be careful control of the light that goes directly thru the hole in one extreme or that progressively goes less thru the hole and more thru the fluorescent dyed element until all the light goes thru the dyed element at the other extreme thus allowing for the simple mechanical adjustment of the color or hue of light from the light source.

A color measuring unit that is easily mounted in a recording apparatus and measures with high accuracy. All of the elements of the color measuring are integrated into a single unit, such that the color measuring can be used independently in a separated form.The color measuring unit is equipped with a calorimeter holder holding a calorimeter. A carriage reciprocating means is connected to the calorimeter holder and has a calorimeter carriage for reciprocally moving the calorimeter holder in a column direction formed by a color measuring pattern. A pressing member in a pressing posture presses the surface of a recording member on which the color measuring pattern is recorded when measuring color. In a retreated posture, the pressing member retreats so that the recording member can be transported. A rotating and shifting means switches the pressing posture and the retreated posture of the pressing member.

Color characterization of a high dynamic range (HDR) image capture device is provided. Color checker image data of a color checker at multiple exposures is obtained. Color values for neutral patches and exposure values are extracted. A colorimetrically accurate response curve is determined based on the neutral patch color values and the exposure values. An optimized transformation associated with the device is derived through gamma curve compensation based on the neutral patch data and comparison of color values of the compensated image with known color values of the color checker. A calorimetrically accurate HDR image is generated from scene image data of a scene captured by the device at multiple exposures through extraction of exposure data, modification of color values based on the colorimetrically accurate response curve and the exposure data, averaging the modified color values, and transformation of the averaged color values based on the optimized transformation.

A liquid crystal display (LCD) having a plurality of pixels is provided. In one embodiment, the pixels of the LCD each include common and pixel electrodes formed on an insulating layer, and a liquid crystal layer responsive to electric fields generated by the electrodes. The plurality of pixels may include two or more sets of pixels each configured to transmit light of a different color, and the pixel electrodes of one set of pixels may be configured differently from those of another set. In other embodiments, the sizes of the pixels may differ. Various additional devices and methods are also provided.

An image display device such as LCD television comprises: LUTs (look-up tables) which are tables of correction data for correcting color balance of a displayed image; gain adjustment units for providing gain to input signal values representing brightness levels of red, green and blue colors in image data of the displayed image; and a microcomputer for recalculating the correction data in the LUTs and updating the correction data to the recalculated ones. The microcomputer determines, as adjustment gain values, gain values which are provided to the input signal values by the gain adjustment units and which bring color balance of a white balance adjustment image to a predetermined color balance, and recalculates the correction data in the LUTs based on the correction data and the adjustment gain values. This image display device can increase accuracy of white balance adjustment and reduce time required for the white balance adjustment.

A method and computing system are proposed for deducing ink thickness variations from solid-state multi-sensor measurements performed online on a printing press or printer. The computed ink thickness variations enable controlling the ink deposition and therefore the color accuracy. Ink thickness variations are expressed as ink thickness variation factors incorporated into an ink thickness variation and sensor response enhanced spectral prediction model. The ink thickness variation computing system comprises multi-channel sensor devices (e.g. red, green, blue, near infra-red), a processing module, and a computing system. The multi-channel sensor devices are replicated over the width of the print sheet. Preferably embodied by Single Photon Avalanche Diodes (SPADs), due to their high-speed acquisition capabilities, they provide responses according to the reflectance of small area segments within a print sheet. The processing module accumulates the digital sensor responses and forwards them to the computing system, which deduces the ink thickness variations.

A device, system and a method for displaying an expanded gamut of colors. The present invention is suitable for various types of electronic display devices, such as televisions and monitor devices (“monitors”) for computational devices, for example. The present invention operates by electronic production of more than three primary colors. As previously described, the term “primary color” specifically does not include light as produced by a neutral filter. Thus, unlike background art systems and devices, the present invention is not limited to combinations of colors which are produced from only three primary colors, such as red, green and blue for example.

The invention is directed to various calibration techniques for calibrating an imagining device such as a display device, a printer, or a scanner. The techniques may involve characterizing the imaging device with a device model such that an average error between expected outputs determined from the device model and measured outputs of the imaging device is on the order of an expected error, and adjusting image rendering on the imaging device to achieve a target behavior. The invention can achieve a balance between analytical behavior of the imaging device and measured output. In this manner, adjustments to image rendering may be more likely to improve color accuracy and less likely to overcompensate for errors that are expected.

The application provides a camera lens, a camera module, and a terminal. The camera lens includes a first lens, a diffractive optical element, and a lens module along an optical axis from the object surface to the image surface; the surface of the first lens facing the object surface is a convex surface at the optical axis, and the surface facing the image surface is a concave surface, having a positive focal power; the diffractive optical element has a positive focal power and includes a surface facing the object surface, a surface facing the image surface, and a diffractive surface between the two surfaces, the surface facing the object surface is a convex surface at the optical axis, and the surface facing the image surface is a concave surface at the optical axis; the lens module includes N lenses, at least one of the surface facing the object surface and the surface facing the image surface of each of the N lenses is an aspheric surface, and the lens module has a positive focal power. The camera lens provided by the application can meet the requirements of miniaturization and high image quality, and meet the demand for size increase of the image sensor.

The invention relates to a method for generating a color correction table of a digital image device and a method for measuring and separating a composite color. The method for generating the color correction table comprises the following steps: closing the color correction function; initializing a system; measuring the basic points of the color gamut displayed by the digital image device; measuring the brightness value and the chroma stimulus value of a white picture of the digital image device; calculating the brightness values of red, green and blue of the white picture; interpolation calculating to obtain three real brightness characteristic curves of red, green and blue; calculating to obtain three idea characteristic curves of red, green and blue; finding the points most close to the brightness values of gray scales on the idea brightness characteristic curves, and storing the values corresponding to the points; and generating a color correction table according to the gray scales corresponding to the values in ascending order.

A hand-held measurement device for appearance analyses includes a measurement array which comprises a number of illumination means for applying illumination light to a measurement field in at least three illumination directions and a number of pick-up means for capturing the measurement light in at least one observation direction. The illumination directions and the observation directions lie in a common system plane. At least one pick-up means is embodied to spectrally gauge the measurement light in a locally integral way, and at least one imaging pick-up means is embodied to gauge the measurement light in terms of color in a locally resolved way. The spectral pick-up means and the locally resolving pick-up means are arranged such that they receive the measurement light reflected by the measurement field under the same observation conditions and in particular from the same observation direction.

The invention discloses black ceramic applied to the field of fingerprint identification products, mobile phone appearance and decorating parts and other related electronic equipment.The black ceramic comprises a ceramic material and dye, and the molar percentage content of the ceramic material and the molar percentage content in the black ceramic are 0.1-99.9% and 0.1-99.9% respectively; the ceramic material is at least one of ZrO2 and Al2O3, wherein ZrO2 at least contains 0-8% mole of Y2O3, and the dye is a transition metal compound.The black ceramic has the advantages of being high in color accuracy, uniform in coloring, high in strength and low in light transmittance and having a smooth surface mirror plane.

The invention discloses a fabric printing process which comprises the following steps: 1) printing of calico paper, namely manufacturing a plurality of printing rollers by adopting to-be-printed patterns through electric carving platemaking, mounting the printing rollers on a transfer printing machine, and printing the calico paper with the to-be-printed patterns after being stained with ink; and 2) printing of calico, namely putting the calico paper on a thermal transfer printing device, entering into a heating roller together with a blank fabric for thermal transfer printing, printing patterns on the calico paper on the blank fabric, and rolling to obtain the calico, wherein the ink is prepared from the following raw materials: resin, pigment powder and an organic solvent at a mass ratio of 1:(2-5):(10-20). The fabric printing process disclosed by the invention is abundant in fabric color, is widely applied to printing of patterns for umbrella covers, tablecloth and the like, and is high in efficiency and low in cost, and a fabric prepared by the fabric printing process dislcosed by the invention is high in attached color fastness, high in temperature resistance, and resistant to long-term air or rain corrosion without fading.

An electrophoretic display device according to an exemplary embodiment of the present invention includes: a lower substrate; an upper substrate; a thin film transistor disposed on the lower substrate; a pixel electrode connected to the thin film transistor; an electronic ink layer positioned between the lower substrate and the upper substrate; a plurality of partitions disposed on the upper substrate; a reflecting layer disposed on the partitions; a color filter disposed between the partitions.

The invention relates to an illuminating device which comprises a base plate, a light emitting diode and a grinded wavelength transforming layer. The light emitting diode is arranged on the base plate; the wavelength transforming layer corresponding to the light emitting diode is arranged on the base plate; and at least partial light emitted by the light emitting diode is illuminated on the wavelength transforming layer.

An image forming apparatus includes: an image forming section; an image reading sensor and a colorimeter; a temperature sensor; a memory that stores a first color value and a second color value in a first color chart that has a larger number of patches than a second color chart; a processor that creates a scanner profile for converting a first color value into a second color value using color values obtained by the image reading sensor and the colorimeter, corrects the scanner profile according to the color values obtained by the image reading sensor and the colorimeter, and converts the first color value into the second color value using the corrected scanner profile.

The invention relates to a method for generating calibrated colour data of a target using colour measurement instruments distributed in the network comprising the steps A) generating at least one standard instrument profile for the colour measurement instruments distributed in the network to correct photometric and wavelength scale differences, and B) generating at least one geometry instrument profile for the colour measurement instruments distributed in the network to correct geometry scale differences. The method can be used in applications where colour measurement instrument networks are used, particularly in robotic systems where colour measurement instruments are integrated.

The invention discloses a production process for three-dimensional art glass. The production process comprises the following steps of (1), taking a glass substrate, printing glazed printing ink on the first surface of the glass substrate, drying at 150-200 DEG C and cooling to the normal temperature, then, sintering at a constant temperature of 690-720 DEG C, quenching and cooling to obtain semi-finished product glass; (2), taking the semi-finished product obtained in the step (1), placing in a three-dimensional module with the first surface facing downwards, and carrying out gradual-advancing model high-temperature sintering at 500-900 DEG C, and then carrying out gradual-returning model natural cooling to obtain the three-dimensional art glass. The production process for the three-dimensional art glass has the advantages of complete glass surface glaze, high finished product rate and the like.

The invention relates to the field of automation equipment for preparing roast ducks and particularly relates to a chain type conveying and spraying all-in-one machine for a roast duck preparation process. The chain type conveying and spraying all-in-one machine comprises a chain conveying mechanism and a spraying processing device; the chain conveying mechanism passes through the spraying processing device and circularly rotates; and the spraying processing device is internally provided with a spraying pipe which is used for spraying and processing semifinished ducks suspended on the chain conveying mechanism. The chain type conveying and spraying all-in-one machine has the advantages that the sticking and bumping of the semifinished ducks in the human power transport is reduced in the driving process by using a chain for conveying the semifinished ducks, the application of the spraying device can eliminate the work slowdown situation caused by manually heating water and the semifinished ducks in a cooking stove and frequently watering, the color accuracy of the colored ducks can be greatly increased by using the spraying device for coloring.

In an image forming apparatus provided with an image transporting belt that holds an image directly or indirectly and is laid on a plurality of tension rolls thereby to move circularly, and a sub-unit having a rotary roll that comes into contact with this image transporting belt and is rotationally driven by a drive section, the drive section includes a drive source, and an elastic drive power transmitting member that transmits drive power from the drive source and absorbs difference in peripheral speed produced between the image transporting belt and the rotary roll. The drive section includes a slip transmission member that engages with the elastic drive power transmitting member and slips under a condition over a peripheral speed difference absorbable range of the elastic drive power transmitting member.

An image forming apparatus generates a color image on a transfer belt by superimposing toner images of respective colors generated by image forming units, and transfers the color image onto a transfer medium. The image forming apparatus includes a correction pattern forming unit configured to form a correction pattern for correcting color misalignment on the transfer belt, a detection sensor configured to detect the correction pattern formed on the transfer belt by the correction pattern forming unit, and a correction control unit configured to control a width of the correction pattern in response to an output of the detection sensor produced by detecting the correction pattern.

A liquid crystal display (LCD) having a plurality of pixels is provided. In one embodiment, the pixels of the LCD each include common and pixel electrodes formed on an insulating layer, and a liquid crystal layer responsive to electric fields generated by the electrodes. The plurality of pixels may include two or more sets of pixels each configured to transmit light of a different color, and the pixel electrodes of one set of pixels may be configured differently from those of another set. In other embodiments, the sizes of the pixels may differ. Various additional devices and methods are also provided.