454 results about "Color saturation" patented technology

In an image processing apparatus processing digitized image data taken by a digital camera, or the like, an image focused on an image pickup device is divided into a plurality of rectangular regions. A value of the lightness with respect to each rectangular region and a distribution of the color saturation are calculated by using image data. The scene of the image is judged whether it is backlighted or not by using a number of the rectangular regions having the value of the lightness equal to or larger than a threshold value. When the scene is judged as the backlight scene, it is further judged whether it is actually backlighted or not by using the distribution of the color saturation.

A system and related techniques generate and present a set of linked, dynamically interactive image processing controls for image editing and optimization tasks. In embodiments a user interface may present a set of global editing modes such as color manipulation, exposure correction or others. Each mode may contain a hierarchical set of basic, intermediate and advanced controls such as one-button automatic fixes, color or saturation sliders or editable histograms or other curves. When a user wishes, for instance, to achieve a warmer color balance or perform other color-correction tasks, the system may automatically detect adjustments in one or more parameters, such as CMYK values, and automatically adjust the values of other parameters to enhance the intended correction or action. For instance when the magenta content on a CMYK slider is increased, the color saturation may be slightly increased or color temperature may be slightly raised, to create a warmer appearance in the color cast of the image. Other combinations of image parameters may be linked. According to embodiments, a set of editable curves such as histograms or gamma curves may be dragged or otherwise adjusted or manipulated by users, and saved for re-application to other images or at other times.

A method for reconstructing an extended color gamut digital image from a limited color gamut digital image includes transforming the limited color gamut digital image in the particular limited color gamut color space to a reference color space forming a limited color gamut digital image in a reference color space; providing a modified inverse color adjustment function which, when such function operates on the limited color gamut digital image in the reference color space, produces the reconstructed extended color gamut digital image having reduced highlight color saturation for highlight color values when compared with corresponding color values of the initial extended color gamut image; and operating on the limited color gamut digital image in the reference color space with the modified inverse color adjustment function to form the reconstructed extended color gamut digital image having reduced levels of color contouring and quantization artifacts.

A mono-panel projector having a light source device of laser LED is provided with at least one laser LED light source, at least one light magnifying element, a cross type color filter, a light guiding element, a prism module, a digital micromirror device, and a projecting lens module. The laser LED light source generates three small-diameter laser beams of red, green, and blue primary colors all of which are magnified by the light magnifying element, and concentrated into a composite laser beam by the cross type color filter. After that, the composite laser beam is guided by the light guiding element, and projected to the digital micromirror device via the prism module for generating images on the digital micromirror device. Then, the images are reflected to the projecting lens module followed by projecting out of the projecting lens module so that the projector of the present invention provides higher resolution, higher sharpness, brighter images, and higher color saturation by the laser LED light source while providing advantages of minimizing volume, lowering power consumption, enhancing reaction speed, elongating life time, and increasing power efficiency.

A method of producing a color image using a display comprised of pixels comprising red, green and blue primary color subpixels. The method comprises reducing the color gamut and increasing the brightness of the image relative to a base level, decreasing power to the display to reduce the brightness of the image, restoring color to the image to approximately the base level by modifying image pixel data using a three-dimensional lookup table to produce output image pixel data, and communicating the output image pixel data to the display. The display may be an LCD display, an LED display, an OLED display, a plasma display, and a DMD projector. Reducing the color gamut and increasing the brightness of the image may be accomplished by adding white to the image. The white may be added adaptively according to an algorithm by which the amount of white added decreases with increasing color saturation.

A video display apparatus generates luminance information for individual frames of a video signal from histograms of the luminance component of the video signal, and classifies the content of the video signal on the basis of this information. Color saturation information is also generated from color saturation histograms, and scene changes are detected. Video correction parameters and display control parameters are derived from the content classification and color saturation information. The video signal is corrected according to the video correction parameters, and displayed according to the display control parameters. Display characteristics suitable for the video content are thereby obtained. The parameters are changed when a scene change is detected, so that the viewer is not disturbed by the change in video display characteristics.

The invention provides a backlight brightness control method, a backlight brightness control device and a display terminal. The backlight brightness control method provided by the invention includes the following steps that: brightness information of pixel points of a current image is acquired; the global brightness information of the image and the regional brightness information of subregions of the image are acquired respectively; the backlight brightness control value of each subregion is obtained according to the global brightness information and the regional brightness information of each subregion; and the backlight brightness of the image is controlled according to the backlight brightness control value of each subregion. With the backlight brightness control method, the backlight brightness control device and the display terminal of the invention adopted, the backlight brightness of the current image can be dynamically adjusted according to the global brightness information of the image and the regional brightness information of each subregion of the image, and therefore, high dynamic contrast and color saturation can be realized, and at the same time, phenomena of image flicker and uneven brightness when low gray-scale images appear can be avoided.

The invention discloses a liquid crystal display screen, a display device and a quantum dot layer graphical method. A plurality of pixel units are arranged in a liquid crystal panel; each pixel unit comprises a plurality of subpixel units capable of displaying different colors; and a monochromatic quantum dot layer is arranged at the position corresponding to at least one color of subpixel unit of each pixel unit. The embodiment of the invention substitutes the quantum dot layer for the conventional resin to serve as a color filter for converting background light into monochromatic light, the emission spectrum of the quantum dots is narrow and the luminous efficiency is high, and the background light can be efficiently converted into monochromic light, so the color gamut of the liquid crystal display screen can be improved, the color saturation is enhanced and the display quality of the display screen is improved. The monochromic quantum dots are dispersed by a high-molecular polymer network, so accumulation of the quantum dots can be avoided, the quantum yield is increased, the quantum excited lighting effect can be improved, contact of the monochromic quantum dots and oxygen can be avoided, and the service life of the quantum dots is prolonged.

An image mixing apparatus and a pixel mixer capable of mixing image data items having different pixel resolutions, and mixing image data items in an arbitrary display priority, irrespective of the order of mixing, even if the order of mixing is determined in advance is provided. Of two pixel data items having depth values “Zc” and “Zb”, one pixel data item having the depth value indicating that the pixel is located in a foreground position is selected by a pixel selection determination circuit 110. However, if a pixel data item has a hue indicating that the pixel is transparent, such a pixel data item is not selected but another pixel data item is selected instead. Multiplexers 112 to 116 output a pixel data item (hue “Hm”/color saturation “Sm”/brightness “Lm”) which is selected by the pixel selection determination circuit 110. Since pixel data items are input to the multiplexer 112 to 116 at different output rates, it is possible to mix images having different pixel resolutions.

In one or more embodiments, driver awareness may be calculated, inferred, or estimated utilizing a saliency model, a predictive model, or an operating environment model. An awareness model including one or more awareness scores for one or more objects may be constructed based on the saliency model or one or more saliency parameters associated therewith. A variety of sensors or components may detect one or more object attributes, saliency, operator attributes, operator behavior, operator responses, etc. and construct one or more models accordingly. Examples of object attributes associated with saliency or saliency parameters may include visual characteristics, visual stimuli, optical flow, velocity, movement, color, color differences, contrast, contrast differences, color saturation, brightness, edge strength, luminance, a quick transient (e.g., a flashing light, an abrupt onset of a change in intensity, brightness, etc.).

A back light unit having a light guide plate, a light guide bar connecting to the light guide plate, at least a white LED light source, and at least a color LED light source. Each of the LED light sources is positioned at a side of the light guide bar. The color LED light source compensates white light from the white LED light source that cannot produce preferable white light. Accordingly, the back light unit can produce white light that provides preferable color saturation to a display in cooperation of the white LED light source and the color LED light source.

The invention relates to an image processing technology, in particular to an independent color enhancement processing method to the image. The invention discloses an independent color enhancement method which conducts the single color enhancement according to the color chosen by the user. The single color enhancement of the invention includes the procedures that: a. the input image is conversed from a RGB format into a HSV format; b. a color region which the user chooses is detected; c. a color saturation piecewise linear enhancement processing is carried out to the color saturation of pixel points in the chosen color region; d. the signal processed by the pixel points is preserved, so as to judge whether all the pixel points in the presently chosen color region are processed. If so, the image from the HSV format is conversed into the RGB format; if not, the next pixel point is processed and the third procedure is returned. The invention has the beneficial effects that color enhancement is selectively conducted in accordance with the preference of the user, and the aesthetic concept of the users is better satisfied.

A field-sequential display apparatus having a light source that emits light of different colors in different subframes of an image controls the spectral distribution of the light emitted in each subframe according to characteristics of the input image data, or to ambient conditions or other user-specified conditions. The input image data are processed so that image colors are displayed correctly despite changes in the spectral distribution of the light-source colors. This scheme enables the gamut of reproducible colors to be altered from frame to frame to provide an appropriate balance between brightness and color saturation in each frame, and to compensate for ambient lighting conditions.

Data from a data set is displayed as a tree map visualization by identifying data elements in the data set to be highlighted and generating a tree map visualization based on the data set where a location of bounding boxes corresponding to the identified data elements have greater color saturation in comparison to other bounding boxes.

In a transmissive-type liquid crystal display device including a liquid crystal panel and a backlight, the liquid crystal panel has pixels each divided into four subpixels red (R), green (G), blue (B), and white (W). The backlight is a white backlight by which luminance of emitted light is controllable. A color-saturation reducing section carries out a process of reducing color saturation on a first RGB input signal, which is an original input signal, so that the first RGB input signal becomes a second RGB input signal. Thereafter, an output signal generating section obtains a transmissivity and a backlight value on the basis of the second RGB input signal.

The invention discloses a method for detecting fire disaster smog by video on the basis of color saturation and motion mode, which comprises the following steps: firstly, extracting a foreground motion block from a video image acquired by a monitoring camera through a difference method; secondly, detecting the color saturation of the foreground motion block, estimating the direction of the motion block, and calculating the cumulant and the main moving direction of the motion block; and thirdly, calculating the color saturation detection percentage of each region, the average cumulant and the main moving direction ratio to form a characteristic vector, and adopting a Bayesian classifier to judge whether the smog is the fire disaster smog. The detection of the color saturation reflects a rough color distribution of the smog and eliminates a large amount of foreground interfering objects with glowing colors. The color detection in a blocking mode further improves the anti-interference performance of a system. The cumulant shows the characteristic of continuous movement nearby a smoldering point of the smog, and has very good anti-interference performance for a non-reciprocating object. The comprehensive utilization of the color saturation detection percentage, the average cumulant and the main movement ratio can greatly reduce the rate of false alarm for the system.

The invention discloses a backlight module of a display device and a white light LED. The backlight module comprises a lamp bar and a light guide plate, wherein the lamp bar is provided with a plurality of ultraviolet light LEDs, and the light-entering face of the light guide plate and the ultraviolet light LEDs are arranged oppositely. A path of the process from light emitted by the ultraviolet light LEDs to the light shot from the light-exiting face of the light guide plate at least comprises an RGB quantum dot fluorescent powder layer. The RGB quantum dot fluorescent powder layer comprises a red light quantum dot fluorescent screen, a green light quantum dot fluorescent screen and a blue light quantum dot fluorescent screen, wherein the red light quantum dot fluorescent screen, the green light quantum dot fluorescent screen and the blue light quantum dot fluorescent screen are sequentially arranged. The RGB quantum dot fluorescent powder layer generates high-purity white light under excitation of ultraviolet light emitted by the ultraviolet light LEDs. As the RGB quantum dot fluorescent powder layer is formed by sequentially arranging the red light quantum dot fluorescent screen, the green light quantum dot fluorescent screen and the blue light quantum dot fluorescent screen, color saturation of the backlight module is improved, and the problem of reabsorption of RGB quantum dot fluorescent powder is solved.

The invention discloses a method for manufacturing a gravure roller by an electronic engraving method. The method comprises the following steps: firstly, manufacturing a printing plate substrate and plating copper on a printing plate roller, and forming a plate making copper layer on the surface of the printing plate roller; secondly, plating a chrome layer on the plate making copper layer, and engraving; thirdly, eroding an engraved V-shaped ink cell, so as to deepen and widen the plate making copper layer corresponding to the V-shaped ink cell and enlarge the volume of the ink cell; and fourthly, removing chrome from the eroded printing plate roller; and lastly plating the chrome layer functioning as protection. Compared with the prior art, the gravure roller manufactured by the method has the ink cell with larger volume and larger ink capacity, has good color saturation of printed matters when transfer printing, and has higher printing quality.

This invention relates to a full-color OLED display apparatus with improved color saturation and a method of manufacturing the same. The OLED display apparatus comprises a plurality of pixels positioned on the substrate. A first electrode, a first organic light emitting layer, a second organic light emitting layer, a third organic light emitting layer, and a second electrode are arranged on the substrate of each pixel in sequence. Moreover, a first sub pixel, a second sub pixel, and a third sub pixel are defined on the first electrode. To enhance color saturation of the OLED display apparatus, in the OLED display apparatus, the second organic light emitting layer is arranged on the second sub pixel area; the third organic light emitting layer is arranged on the second sub pixel area and the third sub pixel area; and the first organic light emitting layer is arranged on the first sub pixel area and the second sub pixel area.

A system and method of protecting one or more objects rendered on a display device from being observed by an unwanted viewer. A primary object is rendered on the display device, and a privacy protection object is simultaneously rendered over at least a portion of the primary object. At least a portion of the privacy protection object is rendered with a color saturation value, a transparency value, and a phase delay relative to the primary object such that the portion of the primary object over which the privacy protection object is rendered is visibly obscured to a viewer that is located greater than a predetermined viewing distance from the display device and beyond a predetermined field of view of the display device.

A construct that comprises a base material and a polyhydroxyalkanoate, wherein at least a part of the base material is coated with the polyhydroxyalkanoate, and the polyhydroxyalkanoate comprises a 3-hydroxyalkanoic acid unit other than 3-hydroxypropionic acid unit, 3-hydroxy-n-butyric acid unit, and 3-hydroxy-n-valeric acid unit.

In addition, an electrostatic charge image developing toner allows to design the toner characteristics such as chargeability, flowability, stability in time and environmental stability uniform among the toners of different colors. The toner has a small particle size enough for enabling uniform dispersion and being excellent in color saturation and transparency. The toner also shows higher contribution to the environmental security. The toner includes a coloring agent of which at least a part of the surface is covered with polyhydroxyalkanoate (PHA). The toner is produced by dispersing the coloring agent in aqueous medium, then fixing PHA synthesizing enzyme to the coloring agent dispersed in the aqueous medium, then adding 3-hydroxyacyl CoA, and executing a PHA synthesizing reaction to cover at least a part of the surface of the coloring agent with PHA. The toner thus obtained is used for an image forming method.

The invention relates to a dual laser light source system. The dual laser light source system comprises a blue LD and a red LD, a beam splitting device, a fluorescent color wheel, a first drive device, a first beam combining device, a second beam combining device, a filter color wheel, a third drive device, a light collection device and a control device. The beam splitting device is used for partially transmitting and partially reflecting blue light and reflecting colored light newly generated by the fluorescent color wheel. The fluorescent color wheel can be used to at least convert the blue light into green light and reflect the green light. The first drive device is used to drive the fluorescent color wheel to rotate. The first beam combining device is used to combine red light and newly-generated colored light. The second beam combining device is used to combine the red light, the newly-generated colored light and the blue light. The third drive device is used to drive the rotation of the filter color wheel. The control device is used to control power switches of the first drive device, the second drive device, the third drive device, the blue LD and the red LD to make the fluorescent color wheel and the filter color wheel keep synchronization so as to generate timing colored light of a target optical power. Through the above method, the dual laser light source system provided in the invention can be used to improve the brightness and color saturation of a picture displayed through projection.

The invention provides an ink-jet recording material and a preparation method thereof as well as a method for preparing an ink absorption layer coating liquid, and relates to an ink-jet material and a preparation method thereof as well as a method for preparing an ink absorption layer coating liquid, so that the problems of poor ink absorption effect, nonuniform color distribution of printed images, unclear printed images and higher preparation cost of the existing ink-jet recording material can be solved. The ink-jet recording material is prepared from the ink-jet layer coating liquid which is prepared from PVC (polyvinyl chloride) serving as a base material, a 20-30% polyacrylic acid emulsion serving as a primer, an inorganic nano-pigment with the thickness of 10-100nm, a dispersing agent, acetic acid, deionized water and an adhesive aqueous solution. The prepared ink-jet recording material prepared through PVC material corona treatment, PVC substrate glue coating, drying, ink absorption layer coating and drying has the advantages that that the printed image is clear, the ink droplet does not diffuse, and the color is distributed uniformly; and the ink-jet recording material has excellent performances of color definition, color saturation, glossiness and the like. The raw material cost and the manufacture cost are low, so the ink-jet recording material is advantageous to industrial production, popularization and application.

The invention provides a color film baseplate, a display panel, a display and a method for producing the color film baseplate, the color film baseplate comprises a baseplate and a color film layer which is formed on the baseplate, wherein the color film layer comprises a pixel area with at least one color and a variable color pixel area, and the color of the variable color pixel area can be changed under the control of an excitation source. When the color film baseplate is used, the light transmittance of a backlight can be improved according to the practical display requirements, so the energy sources are saved or the color saturation of a display panel is increased.

A quantum dot film comprises a quantum dot layer (101), a lower water-insulation oxygen-insulation protective layer (102), an optical adhesive layer (103), an upper water-insulation oxygen-insulation protective layer (104) and anti-adhesion layers (105), wherein the quantum dot layer (101) comprises silica gel particles (106), red/green quantum dots (107) adsorbed to the silica gel particles, adhesive (108) and diffusion particles (109); the optical adhesive layer (103) is used for bonding the quantum dot layer (101) and the upper water-isolation oxygen-isolation protective layer (104) and mainly comprises the following compositions in parts by weight: 85-100 parts of methacrylic acid diester monomers, 3-15 parts of thickening agents, 0.5-5 parts of coupling agents, 2-5 parts of initiators and 0.1-0.5 parts of accelerants. The brightness and the color saturation of the quantum dot film are unlikely to fade and the quantum dot film has good optical characteristics and long service life.

The invention discloses a color film substrate, a liquid crystal display screen and a monochromatic quantum dot dispersion method. A laminated structure containing monochromatic quantum dots is arranged on a sub-pixel region of at least one color of each pixel on the color film substrate, and is formed by alternately laminating flaky graphite layers and monochromatic quantum dot layers; as the laminated structure containing the monochromatic quantum dots is used to replace current color resin and used as a colored filter, bias lighting is converted into monochromatic light; as an emission spectrum of the quantum dots is narrow and high in light efficiency, the bias lighting can be efficiently converted into the monochromatic light, the color gamut of the liquid crystal display screen can be improved, the color saturation can be enhanced, and the displaying quality of the display screen can be improved; moreover, the laminated structure is formed by alternately laminating the flaky graphite layers and the monochromatic quantum dot layers, so that the monochromatic quantum dots can be uniformly dispersed between adjacent flaky graphite layers, the accumulation of the monochromatic quantum dots can be prevented, the quantum productivity of the quantum dots is increased, and the excitation light efficiency of the quantum dots is improved.

A camera for use with a flash apparatus is capable of achieving excellent color balance when a picture is taken using the flash apparatus. The camera comprises a flash control circuit that controls the amount of light generated by the flash apparatus, and a color adjusting circuit including a linear matrix circuit and a gain control circuit that controls hues or color saturation. A color correcting circuit controls the color adjusting circuit such that the hue or color saturation is properly adjusted in accordance with the amount of light determined by the flash control circuit.

The invention discloses an image quality evaluation method based on a visual characteristic. The method is characterized by: firstly, converting original images into a xyY space or a LCH space, processing a component Y or a component C so as to obtain a group of test images; then, finding at least one JND (just noticeable difference) critical image; calculating differences of brightness (BR), color saturation (CS) and Gaussian function variance parameters in the original images and the JND critical image, wherein average values of the differences are the JND values of the BR, CS and contour rendering (CR) of the original images respectively; and then, carrying out mean calculation on the JND values of the different original images and determining the final JND values; taking the JND as a unit to change different attributes of the image at different degrees respectively; using a visual perception test to test the subjective image quality; then, using a regression analysis to establish a relation model of the image quality and the image attributes; and researching influences of the different attributes of the images according to a variance analysis. By using the method of the invention, influence on image quality which can be perceived by human eyes when improving the display parameter can be quantitatively evaluated.

The embodiment of the invention discloses an image display method, a device and an image display system, relates to image display and solves the problem that the prior art can not flexibly adjust the brightness and the color saturation of the image so as to improve the quality of the image. In the embodiment of the invention, the original RGB chromaticity coordinate of the image is converted into the chromaticity coordinate in target color gamut space; the chromaticity coordinate of the image is adjusted in the target color gamut space; the chromaticity coordinate adjusted in the target color gamut space is converted to the RGB color gamut space so as to obtain a target RGB chromaticity coordinate; and the image is displayed according to the target RGB chromaticity coordinate, so the brightness and/or the color saturation of the image can be flexibly adjusted, and the intensity of light source can be adjusted in real time so as to save energy.

The invention discloses a liquid crystal display screen, a display device and a preparation method of single-color quantum dot layers. A plurality of pixel units are disposed in liquid crystal panel. Each pixel unit is provided with a plurality of sub-pixel units in different colors. The single-color quantum dot layers are disposed at positions corresponding to the sub-pixel units in at least one color. The single-color quantum dot layers are used to replace the existing color resins as color filters so as to convert background light into single-color light. Due to the fact that quantum dots are narrow in emission spectrum and high in light emitting efficiency, the background light can be converted into the single-color light efficiently, color gamut of the liquid crystal display screen can be increased, color saturation can be increased, and display quality of the liquid crystal display screen is increased. In addition, by the polymer network-dispersed single-color quantum dots, quantum dot accumulation can be prevented, quantum yield can be increased to increase quantum inspired light effect, contact of the single-color quantum dots with oxygen can be avoided, and the service lives of the quantum dots are prolonged.