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454 results about "Color saturation" patented technology

Color saturation refers to the intensity of color in an image. In technical terms, it is the expression of the bandwidth of light from a source. The term hue refers to the color of the image itself, while saturation describes the intensity (purity) of that hue. When color is fully saturated, the color is considered in purest (truest) version.

System and method for controlling dynamically interactive parameters for image processing

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.
Owner:MICROSOFT TECH LICENSING LLC

Backlight brightness control method, backlight brightness control device and display terminal

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.
Owner:HISENSE VISUAL TECH CO LTD

Liquid crystal display screen, display device and quantum dot layer graphical method

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.
Owner:BEIJING BOE OPTOELECTRONCIS TECH CO LTD

Video fire hazard smoke detecting method based on color saturation degree and movement mode

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.
Owner:UNIV OF SCI & TECH OF CHINA

Backlight module of display device and white light LED

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.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD

Electrostatic charge image developing toner, producing method therefor, image forming method and image forming apparatus utilizing the toner, construct and method for making the construct

InactiveUS7153622B2Uniform designExcellent in charge uniformityDiffusion transfer processesImpression caps3-Hydroxypropionic acidN-Butyric acid
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.
Owner:CANON KK

Dual laser light source system

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.
Owner:SHENZHEN ESTAR DISPLAYTECH

Ink-jet recording material and preparation method thereof as well as method for preparing ink absorption layer coating liquid

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.
Owner:HARBIN INST OF TECH

Color film substrate, liquid crystal display screen and monochromatic quantum dot dispersion method

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.
Owner:BEIJING BOE OPTOELECTRONCIS TECH CO LTD

Liquid crystal display screen, display device and preparation method of single-color quantum dot layers

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.
Owner:BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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