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231 results about "Colour difference" patented technology

• Color is the American English spelling while colour is the British English spelling. • Both color and colour mean tint or paint. • Adjective of colour is colourful; adjective of color is colorful. • Adverb of colour is coloured; adverb of color is colored. These are the differences between the words colour and color.

Computer color-matching apparatus and paint color-matching method using the apparatus

To provide a computer color-matching apparatus comprising (A) a colorimeter, (B) a micro-brilliance-feeling measuring device, and (C) a computer in which a plurality of paint blends, the color data and micro-brilliance-feeling data corresponding to each of the paint blends, and the color characteristic data and micro-brilliance-feeling characteristic of a plurality of full-color paints are entered and a color-matching-calculation logic operates and a computer color-matching method for brilliant paints of executing the following steps by the computer color-matching apparatus: (1) a step of measuring the paint film of a reference color by a colorimeter to obtain the color data of the reference color, (2) a step of measuring the paint film of a reference color by a micro-brilliance-feeling measuring device to obtain micro-brilliance-feeling data of the reference color, and (3) a step of comparing the color data and micro-brilliance-feeling data of the reference color with the color data and micro-brilliance-feeling data corresponding to the paint blend previously entered in a computer, and selecting a prospective paint blend.
Owner:KANSAI PAINT CO LTD

Grade test method and device of textile colour fastness colour difference

A evaluating and testing device of fabric color difference and color fastness is composed of scanner, illuminating system, video camera equipment, image collecting unit and computer for processing and identifying evaluation ¿C test image of fabric color difference and color fastness. The method of evaluating and testing fabric color difference and color fastness is also disclosed.
Owner:JIANGSU UNIV OF SCI & TECH

Method for managing metamerism of color merchandise

The present invention relates to a method for minimizing the effects of metamerism between a set of color standards (e.g., nitrocellulose lacquers) and inkjet printed color merchandise (e.g., paint chips) under a plurality of illuminants, including a balanced illuminant that emulates lighting conditions between cool (6500 K) and warm (2856 K) color temperatures. For each color standard, one selects an ink combination that best produces color merchandise having a minimal degree of metamerism. Innovatively, a combination of instrumental and visual tests is used to evaluate color difference for a set of color standards-color merchandise pairs under a plurality of illuminants. If a color standard-color merchandise pair fails either test then the ink combination may be adjusted.
Owner:COLUMBIA INSURANCE CO

Absorbent article with color matched surfaces

A tampon having an absorbent member. Optionally, the tampon can have an overwrap and / or a skirt portion. Color matching exists when the colors are contained within a specified CIELab color space volume, have a specified hue difference, or have a total color difference.
Owner:THE PROCTER & GAMBLE COMPANY

Preparation method of dyeable polyester composite fiber of cationic dye

The invention discloses a preparation method of dyeable polyester composite fiber of cationic dye. The preparation method comprises the following steps of: (1) preparation of modified polyester materials: including the preparation of core layer components and skin layer components; (2) preparation of polyester composite fiber: using the above method to prepare two types of dyeable modified polyester chips of cationic dyes, respectively carrying out crystallizing, drying, screw melting and extruding, metering, entering a skin-core eccentric composite spinning component according to the weight composite ratio of the skin layer and the core layer, completely wrapping the core layer by the skin layer, and preparing the three-dimensional curly dyeable polyester composite fiber of cationic dye by the follow-up technique. The invention has higher fiber initial modulus, can overcome the defects of lower fiber initial modulus of normal-pressure single component of the cationic dye, and form spiral three-dimensional curl after drawing and heat-setting, the curl number is higher than that of the fiber obtained by two-dimensional mechanical curl obviously; the cationic dye can carry out normal-pressure dyeing; and when being made into short fiber, the fiber section of the dyeable polyester composite fiber has no colour difference and is characterized by bright color and various styles.
Owner:ZHEJIANG SCI-TECH UNIV

Method for controlling digital jacquard-woven colored patterns

The invention discloses a method for controlling digital jacquard-woven colored patterns. The method comprises the following steps of: determining the parameters of a jacquard weave unit and obtaining the visual colour value corresponding to each intersecting point in the jacquard weave unit by a colour space hybrid colour processing method; and removing the same visual colour data, keeping the visual colour data of an interweaving way, after filtering the data by contrasting a standard 256 colour list by a colour difference computing method, comparing the colour of each pixel point of the colored patterns input into a computer with the visual colours of the jacquard weave unit to obtain the colours with the maximum colour similarity, forming a program, and controlling the digital jacquard to weave colored patterns. All the similar colours in the standard 256 colour can be prepared from yarns with fixed colours without manually selecting the colours of yarns; and the back of a provided jacquard product is relatively flat, so the quality and added value of the product are improved.
Owner:SUZHOU UNIV +1

Video image off-color detection method based on Lab space and correlation function

The invention disclose a video image off-color detection method based on a Lab space and a correlation function. The method comprises the following steps: 1), obtaining two adjacent frames of an image of a detection video; 2), performing conversion from an RGB space to the Lab space; 3), correspondingly dividing the image into sub-blocks; 4), calculating variances and correlations of the corresponding sub-blocks; 5), calculating aberrations of the corresponding sub-blocks; and 6), solving off-color factors by combining correlation coefficients with the aberrations, and making a comparison with a set threshold so as to determine whether an off-color phenomenon exists. The video image off-color detection method based on the Lab space and the correlation function has the advantages of good uniformity, quite low equipment reliance, good applicability, and higher reliability and accuracy.
Owner:ENJOYOR COMPANY LIMITED

Material identification using multiple images

A computer-implemented method of image processing for materials analysis is provided. At least three image datasets are obtained, these representing intensity values of image pixels and being in common spatial registration. The image datasets are processed so as to assign a comparison measure to each pair of image datasets, the comparison measure for a given pair of image datasets being representative of the difference between the spatial intensity information within the pair. A number of image datasets are then selected using the comparison measures. A colour difference measure is defined which represents the difference between pairs of colours of a colour set. Colours are assigned to the selected image datasets such that pairs of the selected image datasets which have substantially different spatial intensity information are assigned respective colours which have a substantially different colour difference measure. A number of the selected image datasets are then combined together to form an output colour image dataset for the formation of a colour image. The combination is such that each pixel of the colour image takes on a colour according to the relative intensities and colours of the selected image datasets so that if the pixel intensity of one dataset is substantially greater than the sum of the pixel intensities for all the other selected datasets, then the output colour in the respective part of the image will substantially match the colour assigned to that image dataset.
Owner:OXFORD INSTR NANOTECH TOOLS

Method for predicating overdying formula of colored fabric

InactiveCN102411667AMeet the requirements of fast response to colorSimple processColor measuring devicesSpecial data processing applicationsAlgorithmColour difference
The invention discloses a method for predicating an overdying formula of colored fabric. The method comprises the following steps of: 1), establishing a basic database which comprises the base fabric data of the colored fabric and the basic color sample data which is required when the colored fabric is dyed by various dyes in different concentration gradients; 2), determining a corresponding basic database according to a target color; 3), matching the target color by using a computer and making a color sample according to the formula; 4), inputting the obtained color sample into the computer, providing a color correcting formula by the computer, and continuously making the color sample according to the color correcting formula; and 5), repeating the step 4) till the color difference between the color sample and the target color meets the requirement, and stopping making the color sample. By the method, the K(absorption) / S(scattering) value of per unit concentration of various dyes of colored fabric dyeing can be well met, and the color matching speed and the one-time accuracy rate are improved.
Owner:SHAOXING UNIVERSITY

Method and device for judging deviation of conveying belt

The invention discloses a method and device for judging deviation of a conveying belt. The method comprises the following steps of: obtaining multiple frames of original images, and calculating the original difference image of any two frames of original images; obtaining the three-primary colour difference of each pixel point in the original difference image, comparing each colour difference of each pixel point with a first set threshold, taking the coordinate value of the pixel point of which at least one colour difference is greater than the first set threshold as a foreground classification sample, and forming a foreground classification sample set by using a plurality of the foreground classification samples; obtaining multiple frames of detection images, and obtaining a foreground detection sample set according to the same processing procedure; and comparing the foreground detection sample set with the foreground classification sample set, and judging that the conveying belt deviates if different samples exist. According to the invention, whether the conveying belt deviates is automatically judged through the comparison between real-time acquired images and the original images, thus avoiding possible human errors in judgement only based on manual video surveillance; therefore the method and the device are more reliable and stable in the aspect of timely fault finding.
Owner:QINGDAO UNIV OF SCI & TECH

Method for realizing digital printing color correction by modifying character file

ActiveCN107395919AGet rid of dependenceHigh accuracy of color correctionPictoral communicationPolynomial least squaresColor correction
The invention discloses a method for realizing digital printing color correction by modifying a character file. The method comprises the following steps: printing a corresponding characterized color code image according to a source character file of a to-be-printed digital file, measuring the L*a*b* value of each color lump, finding out the L*a*b* value of partial color lump with small aberration with the target color lump from the printing color lumps for the target L*a*b* value of each color lump, and then finding out the L*a*b* value of the corresponding color lump in the source character file, establishing a mapping relation by using a polynomial least square regression method, and then computing to obtain the correction value of the corresponding color lump in the source character file by taking the target L*a*b* value as the independent variable; replacing the original source character file by using the corrected feature file, and appointing to the to-be-printed digital file to print. The high-precise and convenient color correction method for digital printing is realized through the method disclosed by the invention.
Owner:JIANGSU ZHENGHONG COLOR PRINTING CO LTD

Method, device and computer software

A device for superimposing a graphic on an image which comprises:a selection unit configured to select a plurality of specified points on the image which represent areas of background;an image processing unit configured to i) determine a colour characteristic of the image at the plurality of specified points;ii) determine a location for graphic insertion;iii) determine the difference in colour between at least one of the plurality of specified points and the location for graphic insert;iv) define areas within the location for graphic insert as a foreground region or a background region on the basis of the determined colour difference;v) overlay the graphic on the image to form a graphic image; andvi) overlay the foreground regions of the location for composition onto the graphic image, is described.
Owner:SONY CORP

Super-white and super-thick float glass and preparation method thereof

The invention relates to the field of glass making and in particular relates to super-white and super-thick float glass and a preparation method thereof. A raw material formula of the super-white and super-thick float glass is designed, an edge roller control technology is adopted, from a first pair of edge controllers to the last pair of edge controllers, an inward component force produced by virtue of speed difference and negative angle of each pair of edge rollers is utilized for controlling the speed difference to be 15-50m / h; runner temperature is controlled to be (1100-1105)+ / -1 DEG C; molten tin slot outlet temperature is controlled to be 625+ / -5 DEG C; pulling amount of each edge roller is controlled to be 560-610t / d, plate width is controlled to be 4000-4100mm, inner teeth are 3580-3860mm wide, and Vmain is 135-165m / h; and the prepared glass is good in transmittance, high in whiteness, small in colour difference, ultraviolet-resistant and non-glare. Optical distortion angle is more than 55 degrees, the produced glass plate is wide, and thickness and inner teeth are stable.
Owner:ZHANGZHOU KIBING GLASS +3

Detection and correction method for printing dot area increase values

The invention discloses a detection and correction method for printing dot area increase values. A detection strip on which multiple sections of screening step wedges are arranged for each color is attached to each printing sheet; multiple of printing sheets of different time periods are extracted; each color block on the detection strips is detected in a scanning mode, so that the spectral reflectance of each color block is obtained; color difference values of L*a*b*values of green, pinkish red, yellow and black solid color blocks of different ink zones of different printing sheets and standard L*a*b* values are calculated; then simple arithmetic mean values of color differences are calculated; weighted average values of dot areas of screening color blocks of each step wedge of each ink zone of which the color differences are smaller than the average color difference values according to color differences; then the dot area increase values are calculated; and correction values which are needed by digital documents for dot area compensation are calculated according to the average values of dot areas. The dot area increase values obtained in the invention can represent a current dot representation state of a printer more reasonably; dot area correction is performed more correctly; and the detection method is simple for operation and high in efficiency.
Owner:南县好彩印务有限公司

10YR 5/2 pigment composition and color block made of the composition

The present invention discloses a kind of 10YR 5 / 2 pigment composition and color block made of the composition. The pigment composition consists of: CSC-C base material in 995-1005 weight portions, PR101 with pigment content 65 % in 6.87-7.57 weight portions, PBK7 with pigment content 9 % in 2.48-2.68 weight portions, PY42 with pigment content 60 % in 24.04-26.04 weight portions and PW6 with pigment content 65 % in 75.32-77.32 weight portions. The CSC-C base material contains acrylic copolymer of molecular weight 150-200 KD in 35-45 % as main component; and has contrast ratio of 0.20-0.40, viscosity of 90-100 KU, and gloss index of 5-10 deg at incident angle of 85 deg. The composition of the present invention has high weather resistance, high stability, high compounding reproductivity and environment friendship. The color block is accurate and practical.
Owner:SHENZHEN OCEAN POWER INDUSTRIAL CO LTD

Method of preoceeding qualitative and/or quantitative analysis against target substance in sample and its detecting device

The present invention discloses a method which uses coloured biological chip to carry on qualitative and / or quantitative analysis for sample, especially for target object in biological sample and device to be used in the method. In the method, optimum program is selected to generate maximization contrast for increasing possibility to raise analysis sensitivity, enlarging much freedom for chip base selection and scanner selection in order to realize quite high detection sensitivity with quite low cost by utilizing obvious contrast of brightness, saturation and signal light colour difference formed between coloured background and coloured target on chip.
Owner:CHENGDU KUACHANG SCI & TECH CO LTD

Lens module colour-difference correction method, lens module colour-difference correction system, lens module and photographing equipment

The invention discloses a lens module colour-difference correction method, a lens module colour-difference correction system, a lens module and photographing equipment. The lens module colour-difference correction method comprises the following steps: obtaining a current environmental colour temperature value at first; finding out a colour temperature parameter of the lens module under the environmental colour temperature value from a curve of a corresponding relationship between the colour temperature of the lens module and the colour temperature parameter; finding out a colour temperature parameter of a standard lens module under the environmental colour temperature value from a curve of a corresponding relationship between the colour temperature of the standard lens module and the colour temperature parameter; and calculating the relative difference value of the two, and correcting the colour difference of an image photographed by the lens module according to the relative difference value, such that the colour difference of the image photographed by the lens module under the environmental colour temperature value is close to or achieves the colour difference of an image photographed by the standard lens module under the environmental colour temperature value. According to the invention, the colour difference of the lens module can be dynamically corrected; the correction accuracy is high; and the effect is good.
Owner:GOERTEK OPTICAL TECH CO LTD

Manufacturing technique of label in mold

The invention discloses a manufacture process for labels in dies, comprising the steps as follows: a) printing the justification sheets such as patterns of products, justification positioning hole and a unit positioning hole; b) punching corresponding justification positioning hole on the sheets; c) die-cutting the unit positioning hole and the label shape required to be formed by a die cutter; d) forming a label with a certain three-dimensional shapes on a forming die; e) processing the final product by the injection molding. The manufacture process of the invention has the beneficial effects of overcoming the defects in the prior art such as large consumption of leftover material, easily appeared pressing marks on the edges, rupture and colour difference appearing on the curved surface, low efficiency, and the like, changes the type of the prior art that a label is singly positioned, realizes the effects that a plurality of labels commonly use the positioning hole and a plurality of labels are formed once, improves the performance of the product and reduces the production cost.
Owner:BYD CO LTD

Automatic detection device and method of plane figure color shading

InactiveCN103033266AAvoid interfering with chromatic aberration detectionImprove accuracyColor measuring devicesColor/spectral properties measurementsGraphicsMachine vision
The invention relates to an automatic detection device of plane figure color shading based on machine vision technology. The automatic detection device of the plane figure color shading comprises a camera, a memorizer, a displayer and a processor. The camera shoots a plurality of plane figures on work pieces. The processor stores images shot by the camera in the memorizer. The processor establishes a first classification and a comparison standard. A deviation value is obtained by comparing an image shot for the K+1th time with the comparison standard. The deviation value is judged whether exceeding an allowed error range value or not. When the deviation value is in the allowed error range value, the image shot for the K+1 time are classified as the first classification. When the deviation value is beyond the allowed error range value, a second classification and a comparison standard are established. The displayer displays each classification result obtained. The automatic detection device of the plane figure color shading based on the machine vision technology can automatically detect the color shading and classify the color shading. The invention further relates to an automatic detection method of the plane figure color shading.
Owner:屈建华

OLED light-emitting device and preparation method thereof

The invention provides an OLED light-emitting device and a preparation method thereof. The OLED light-emitting device comprises a first electrode; an organic function layer formed on the first electrode; a second electrode formed on the organic function layer; an optical distance adjustment layer formed on the second electrode and used for adjusting the optical length of the OLED light-emitting device; and a semi-reflective semi-permeable layer formed on the optical distance adjustment layer and used for adjusting phase difference of the light emitted out from the optical distance adjustment layer when the light is reflecting. According to the OLED light-emitting device and the preparation method thereof, the adjustment difficulty of the device can be reduced, the production qualified rate is improved, and the cost is reduced. Besides, the thickness of the electro-optical conversion part of the device is far smaller than that of the structure in the prior art, so that drive voltage of the whole device gets smaller, electro-optical conversion efficiency of the device is improved at the meanwhile power consumption is reduced, and the service life of the device is increased. Besides, through the OLED light-emitting device, colour difference is also improved.
Owner:EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD

Method for correcting colour of colour difference meter by utilizing tetrahedron interpolation method

The invention relates to a method for correcting colour of a colour difference meter by utilizing a tetrahedron interpolation method. Firstly, the traditional interpolation algorithm is used for measuring base colour points in required quantity, then a three-dimensional Delaunay triangulation algorithm is used for carrying out tetrahedron subdivision on base colours, and creating a lookup table by utilizing a tetrahedron set obtained by subdivision; after the lookup table is generated, supposing an input point to be P, after A is obtained, and further judging that which tetrahedron the input point P is located in A by utilizing a volume relation between the point p and each tetrahedron in A, wherein if more than two tetrahedrons are contained in B, the point p is a vertex of some tetrahedron, namely the point p is a point belonging to an interpolation point set, no interpolation is required, and a target RGB (red, green and blue) value can be directly output; and mapping of an imaging system is supposed to be in a linear relation, output standard colour value is pn=(Rn, Gn, Bn), and T can be shown by the following formula: pn-p=lambda*n*sigma. Compared with a common colour measuring method based on trichromatic analysis, the method provided by the invention has the characteristics of simplicity, speediness and accuracy.
Owner:BOYA ZHIHUI INT

Image forming apparatus and method with control of image heating condition based on desired glossiness difference between achromatic image portion and color image portion

An image forming apparatus includes an image forming device for forming a multi-color image using achromatic toner and chromatic toner; an image heating device for heating the multi-color image formed on a recording material; a setting device for setting a glossiness difference between an achromatic image portion and a color image portion; and a change device for changing an image heating condition of the image heating means in accordance with the set glossiness difference.
Owner:CANON KK

Optical device design method for optimizing human color vision perception, spectrum and brightness measuring method

The invention discloses a brand-new method for designing a transmitted spectrum of a non-energy-consumption optical device. The method includes the following steps of firstly, selecting a light body; secondly, selecting color sense parameters including color gamut, color aberration, color migration, chromaticity and white point positions as the main parameter system to depict the human color vision perception for the target of vision optimization or control; thirdly, calculating and expressing various color sense parameters of human color vision perception by means of the color space; fourthly, optimizing and controlling the color sense parameters by means of an artificial intelligent linear or nonlinear mode; fifthly, selecting an optimal optimizing method to design the spectrum of the optical device through artificial intelligence; sixthly, conducting spectrum later-period processing; seventhly, conducting drawing and data displaying on the designed spectrum. The transmitted spectrum created through the design method directly simulates, optimizes and controls the improvement of the non-energy-consumption optical device on the human color vision perception.
Owner:陈晓冬

Control method for measuring colour difference

The present invention discloses a control method for measuring colour difference. Said control method includes the following steps: firstly, utilizing sampling sensor to obtain colour visual sensation, making the colour undergo the process of red, green and blue three-colour filtration, and converting the filtered three-colour light signal into electric signal to make output; sampling reference sample to obtain the correspondent electric signal, making said electric signal undergo the process of A / D conversion and using it as standard value; sampling test sample to obtain electric signal, comparing the value obtained after the above-mentioned electric signal is undergone the process of A / D conversion with the above-mentioned standard value so as to obtain correspondent three stimulation values; again sampling new reference sample to define new standard value, judging new test sample to obtain new stimulation values; converting collected three stimulation values into colour difference value and making output.
Owner:北京机械工业学院

Method for half quantitatively and fast detecting contents of delta 9-THC (tetrahydrocannabinol) in cannabis plants

InactiveCN102175813ASolve the difficult to detect△ <sup>9</sup> - THC problemEasy to separateComponent separationCooking & bakingTest article
The invention discloses a method for half quantitatively and fast detecting contents of delta 9-THC (tetrahydrocannabinol) in cannabis plants. The method comprises the steps of: baking and smashing cannabis plants to be fine powder; ultrasonically extracting the powder by an organic solvent to obtain a test article solution; taking a standard solution containing 0.3% of delta 9-THC as a referencesolution; and after pointing samples, expanding the solutions and developing colours, judging the content of the delta 9-THC in the test article via observing the colour differences of the test article and the reference article. Water in the cannabis plants is removed fast by heating at a high temperature; delta 9-THC is fast transformed and formed from carboxylic acid precursors via decaboxylization; and the problem that the delta 9-THC in newly collected cannabis plant sample is difficult to be detected is solved. The method is fast, simple, easily operated and has low detection cost, and can fast and half quantitatively detect cannabis plants; the method can be used for fast screening in laboratory; and the basic unit is mastered and configured easily; and a good application perspective is provided.
Owner:云南省农业科学院经济作物研究所

Film for detecting laser paper and detecting method thereof

ActiveCN101131536AImpact resolutionControl chromatic aberrationRadiation pyrometryScreening processesPrinting inkHue
This invention is a sort of the Pholin which is used to check the radium paper. it is characterized in that it is executed in this way: the flat gauze Pholin of 90%+-10%, it is exposed in the silk screen which have the reticle of 420+-100 and the glue which is scraped as many as 12+-8 floor, then it is executed the block. This block is stamped the snowflake printing ink in the empty Pholin, thus it becomes this Pholin which is used to check the radium paper. Making this invention to apply to the color measuring tool (its principle is the same with the color filter) in order to measure its LAB, it can control the color aberration (color) of the good production, also can be used for checking the color of the paper. In producing the radium paper, it finds hardly the printing problem of the 'dark-bar' and the 'draw-ink-bar'. This problem can be checked soon by using this technique. Also it can be executed a opposite color measuring standard by this Pholin, then it contrasts and checks the color of her production by this standard.
Owner:YUNNAN QIAOTONG PACKAGE PRINTING

Method and system for controlling color deviation of film-coated printed matter

The invention relates to a method and system for controlling color deviation of a film-coated printed matter. According the method and the system, a prefabricated printing color data set and a prefabricated film coating color data set are respectively used as a printing color management standard and a film coating color management standard respectively, and a target image is further matched with the standards respectively to realize the color deviation control of a target image film-coated sample. The control method and the system have the advantages that the color deviation identification isstandardized and digitalized, and the working efficiency is improved; the color accuracy of the target image film-coated sample is increased, and the number of the steps required to obtain the targetimage film-coated sample is effectively reduced; and the number of times of object printing is reduced, the consumption of printing materials is reduced, and the number of rejected products is effectively decreased.
Owner:BEIJING ARTRON GRAPHIC ART CO LTD +3

Preparation method of dyeable polyester composite fiber of cationic dye

The invention discloses a preparation method of dyeable polyester composite fiber of cationic dye. The preparation method comprises the following steps of: (1) preparation of modified polyester materials: including the preparation of core layer components and skin layer components; (2) preparation of polyester composite fiber: using the above method to prepare two types of dyeable modified polyester chips of cationic dyes, respectively carrying out crystallizing, drying, screw melting and extruding, metering, entering a skin-core eccentric composite spinning component according to the weight composite ratio of the skin layer and the core layer, completely wrapping the core layer by the skin layer, and preparing the three-dimensional curly dyeable polyester composite fiber of cationic dye by the follow-up technique. The invention has higher fiber initial modulus, can overcome the defects of lower fiber initial modulus of normal-pressure single component of the cationic dye, and form spiral three-dimensional curl after drawing and heat-setting, the curl number is higher than that of the fiber obtained by two-dimensional mechanical curl obviously; the cationic dye can carry out normal-pressure dyeing; and when being made into short fiber, the fiber section of the dyeable polyester composite fiber has no colour difference and is characterized by bright color and various styles.
Owner:ZHEJIANG SCI-TECH UNIV
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