51 results about "Color tests" patented technology

To compensate for color-calibration sensor drift, a measurement of bare-print-medium tonal value is taken in immediate time juxtaposition to each color test pattern; measured bare-medium tone is then used to correct color-patch readings. A line sensor or the like, on the scanning printhead carriage, is used for the reading. Preferably two such readings are taken, one at each end of each test pattern; ideally separate scans of the bare medium are taken without any test-pattern patch to develop longterm and short-term drift profiles, for refining the corrections. To compensate for calibration error due to runout in the carriage track—particularly for wide-bed printers—sensor response to bare medium is used to represent variations in carriage-to-medium spacing along the track; these variations are corrected in later sensor use.

Bottles, containers and other articles are formed from polypropylene compositions that include a reheating agent, such as antimony, carbon black, graphite, titanium, copper, manganese, iron, tungsten, graphite, infra-red absorbing dyes or other infra-red absorbing material. The reheating time for the polypropylene composition is shortened for injection stretch blow molding or thermoforming, and the polypropylene granule composition with reheating agent has an L* value of at least 80% of the L* value for a polypropylene granule control without added reheating agents as measured by the Gardner color test. The reheating agent may be incorporated into the polypropylene composition by in situ chemical reduction of a metal compound, such as antimony triglycolate, with a reducing agent, such as hypophosphorous acid. In addition, the polypropylene composition with reheating agent may be derived from a polypropylene masterbatch with high concentrations of reheating agent.

The method of the present invention involves first estimating the common gamut of the colors that this printer is expected to reproduce. Two color test targets are defined, each containing a wide range of color patches spanning color space. Preferably comprising color patches which are expected to be outside the gamut of the printer as well as color patches expected to be within the gamut of the printer. The left-to-right test target is printed in single-pass, uni-directional print mode, (printing on left-to-right scans only) and a color calibration table for left-to-right printing is generated. The right-to-left test target is printed in single-pass, unidirectional print mode, (printing on right-to-left scans only) and a color calibration table specific for right-to-left printing is generated. The next step of the present invention involves determining the mathematical intersection of the gamuts produced by printing in left-to-right mode only and by printing in right-to-left mode only. This is done by, first printing the left-to-right test target processed by the color calibration table associated with the primary print direction. Then, printing the right-to-left test target processed by the color calibration table associated with the secondary print direction and comparing each of the corresponding outputs. Colors which are within the gamut of both left-to-right only and right-to-left only printing are identified by their similarity or distance from each other in color space. Thereafter and having obtained the gamut intersection of left-to-right and right-to-left printing modes, new calibration tables are generated for each printing direction with the starting gamut (range of achievable colors) based on a slightly smaller gamut than the gamut intersection identified. In other words, the color gamut, having been clipped in both directions to the intersection of the gamuts, becomes the new gamut for the iterative calibration process.

A color calibration apparatus includes an image obtaining unit configured to obtain first and second photographed images which are generated by photographing first and second mono-color test images displayed on the display device; a controller configured to detect an ambient light area on which an ambient light is shining within the first photographed image based on pixel values of the first photographed image, and further configured to determine a remaining area of the first photographed image other than the ambient light area as a representative value calculating area; and an image processor configured to calculate a representative value based on pixel values of an area corresponding to the representative value calculating area within the second photographed image, and further configured to perform color calibration of the display device based on the representative value.

A process for producing purified alcohols yielding good results in the acid wash color test which comprises the condensation step of subjecting an aldehyde to aldol condensation and dehydration to obtain a corresponding condensate, the hydrogenation step of hydrogenating the condensate into a crude alcohol, and the purification step of distilling the crude alcohol to obtain a purified alcohol, characterized by feeding into the purification step a crude alcohol containing compounds having oxygenic heterocycles bearing carbon-carbon double bonds in the cycle in a concentration of as low as 200 ppm by weight or below. In particular, the aldehyde is n-butyraldehyde, the condensate is 2-ethylhexenal, and the alcohol is 2-ethylhexanol.

A method and system for automated visual analysis of a dipstick using standard user equipment (UE) are disclosed herein. The method may include the following steps: capturing, using an arbitrary UE having specified image capturing and processing capabilities, an image of a dipstick having colored test reagents, and a calibration array having a plurality of colored calibration elements which are tailored specifically to the test reagents; deriving, based on the captured image, illumination parameters associated with the dipstick and the calibration array; determining whether the illumination parameters are within predefined illumination boundary conditions sufficient for interpreting the test reagents, given the specified image capturing and processing capabilities of the UE; applying image enhancement operations to the captured image, based on predefined mapping between the derived illumination parameters and the required adjustments; and interpreting the colored test reagents, based on the colored calibration elements, in the enhanced captured image.

The invention belongs to the field of protective lighting for cultural relic, and provides a white LED spectrum acquiring method applicable to drawing color protective lighting. By the aid of the white LED spectrum acquiring method, problems of deficiency of scientific experiment WLED (white light emitting diode) spectrum acquiring methods with the lowermost color damage and incapability of accurately evaluating influence of monochromatic light on color conditions of the traditional Chinese drawing at present can be solved. The technical scheme includes that the white LED spectrum acquiring method applicable to drawing color protective lighting comprises steps of 1), manufacturing model test specimens; 2), preparing experiment light sources; 3), carrying out illumination experiment processes, to be more specific, (1) carrying out experiments in all-dark optical laboratories, (2) placing the drawing test specimens under the light sources and perpendicularly illuminating the test specimens by the aid of the light sources and (3) periodically illuminating the color test specimens; 4), carrying out parameter detection processes. The white LED spectrum acquiring method has the advantage that the white LED spectrum acquiring method is mainly applied to design and manufacture places.

Systems and methods for testing visible chemical reactions of a reagent are provided. In one implementation, the method may include receiving from an image sensor associated with a mobile communications device an image of a reagent with a plurality of colored test reagent pads in proximity to a colorized surface having a plurality of colored reference elements of differing shades. The method further includes using the differing shades of the plurality of colored reference elements to determine local illumination conditions. Thereafter, the method includes using the determined local illumination conditions and an analysis of a depiction of the plurality of colored test reagent pads in the image to determine an extent of a chemical reaction on the reagent. Then the method includes causing the mobile communications device to provide to the user an indication that the testing of the reagent is complete.

A method for analyzing a dipstick using a smartphone is provided herein. The method includes: capturing an image containing: a dipstick having colored test reagents, and a color board having a grid of grey patches and a plurality of reference color patches; deriving, based on the grid, local illumination parameters associated with the colored test reagents and the plurality of reference color patches; determining whether illumination parameters are sufficient for interpreting the colored test reagent; in a case the illumination parameters are insufficient, notifying a user that an interpretation of the colored test reagents is not possible, otherwise, applying one or more image enhancement operation to the captured image, based on an analysis of the grid of grey patches, to yield enhanced reference color patches; and interpreting the one or more colored test reagents, by projecting the colored test reagents onto a vector of the enhanced reference color patches.

The invention publicizes a kind of spraying ink accepting material and back spraying lamp house slice made up of the material . The spraying ink accepting material includes two layers of spraying ink accepting system , the top layer is a penetration covering layer that contains stuffing and water--solubility resin , the bottom layer is a dye accepting layer that contains hydrophilicity resin and cation resin . The back spraying lamp house slice includes transparent substrate with pre-scribble cohering layer , on the transparent substrate spreads dye accepting layer that contains stuffing and water--solubility resin , on the substrate scrawls penetration covering layer that contains stuffing and water--solubility resin . Because the invention has adopted the stated spraying ink accepting material and back spraying lamp house slice , when typing color tests piece of specimen page on different printer , and test the color density of yellow , rank , blue and black on the coating (front) and slice base (back) , all the back spraying penetrating effects of the tested specimen page are great .

A system for visualization of a building material on a building, the system adapted to provide a rendered image having a ΔE, as measured according to a Color Test, of less than 10, less than 8, less than 6, less than 5, less than 4, less than 3, less than 2, or even less than 1.

A system for rendering a building material comprising a database including an adjustable parameter relating to a characteristic of a contemplated building material, wherein the system is adapted to provide a rendered image of the contemplated building material, wherein the system is adapted to be used in conjunction with manufacturing of the building material, and wherein the rendered image has a ΔE, as measured according to a Color Test with respect to the building material, of less than 10, less than 8, less than 6, less than 5, less than 4, less than 3, less than 2, or even less than 1.

A dental tone match checking material is provided that makes possible the elaboration of better esthetics than in the prior art. The present invention is a dental tone match checking material and relates to a dental tone match checking material, wherein the difference (n1−n0) between the refractive index n1 of this material and the refractive index no of the cured product from the dental cement that is checked with the dental tone match checking material is in the range from −0.040 to +0.020.

The invention relates to the technical field of dyeing and especially relates to a frame-type air energy laboratory dyeing machine and method. The frame-type air energy laboratory dyeing machine comprises a box body, a driving device, dyeing cups, a rotating frame and an air energy heating device; the rotating frame is installed inside a heating chamber; the rotating frame is provided with multiple dyeing cup mounting positions for mounting the dyeing cups; a rotating shaft is connected with the rotating frame and drives the rotating frame to rotate; the air energy heating device performs direct heating on the dyeing cups. According to the above frame-type air energy laboratory dyeing machine, a plurality of dyeing cups can be dyed and heated at the same time so as to replace the sleeve heat transmission of traditional circulation wind-heat laboratory color test machines; the air energy heating device can perform direct heating on dyeing cups so that heat energy is fully used; the temperature of each dyeing cup can be kept consistent with that of others so as to guarantee experiment accuracy; by means of the device, the production efficiency and quality of enterprise is increased and production cost is reduced.

Systems and methods for testing visible chemical reactions of a reagent are provided. In one implementation, the method may include receiving from an image sensor associated with a mobile communications device an image of a reagent with a plurality of colored test reagent pads in proximity to a colorized surface having a plurality of colored reference elements of differing shades. The method further includes using the differing shades of the plurality of colored reference elements to determine local illumination conditions. Thereafter, the method includes using the determined local illumination conditions and an analysis of a depiction of the plurality of colored test reagent pads in the image to determine an extent of a chemical reaction on the reagent. Then the method includes causing the mobile communications device to provide to the user an indication that the testing of the reagent is complete.

The invention discloses a method for degrading malachite green by using bacterial cellulose membrane-immobilized phanerochaete chrysosporium. The method comprises the following steps: preparing a solid plate culture medium and obtaining activated acetobacter xylinum NUST4.2 as a strain; performing static fermentation culture to obtain bacterial cellulose membrane carriers and cutting to obtain small cuboids with different sizes; preparing a spore suspension of phanerochaete chrysosporium; preparing a liquid culture medium; adding the bacterial cellulose membrane carriers with different sizes and numbers into the liquid culture medium and putting the spore suspension of the phanerochaete chrysosporium into the liquid culture medium to prepare the immobilized phanerochaete chrysosporium; and performing de-coloring test on malachite green dye wastewater by adopting the obtained immobilized phanerochaete chrysosporium to determine the influence of the bacterial cellulose membrane carriers on the degradation of the malachite green dye wastewater by the immobilized phanerochaete chrysosporium. According to the method disclosed by the invention, the efficiency and stability of the phanerochaete chrysosporium in degrading the malachite green are improved.

The invention discloses a thin-layer chromatographic detection method of curcuma in Fushengkang tablets. This method uses ethyl acetate to extract the volatile oil in Fushengkang as the test solution; and uses the same method to process the reference medicinal material Curcuma to make a reference medicinal solution; petroleum ether (60-90°C)-ethyl acetate-glacial acetic acid is used as Developing agent, use silica gel thin-layer plate to develop, spray with newly prepared vanillin test solution, heat at 105°C until the spots are clear in color; If there are no spots, it means that the finished product of Fushengkang contains zedoary ingredients; and if the chromatogram of the test product does not show the main spot of the same color at the position corresponding to the chromatogram of the reference medicinal material, it means that the finished product of Fushengkang does not contain zedoary ingredients. The present invention uses ethyl acetate to reflux heat the sample instead of using ether to sonicate the sample, which solves the problems of sample gelatinization, adhesion, and difficult filtration, and reduces the potential harm to human health; the color development result is accurate: the spots are clear and reproducible Good performance and high accuracy.

The invention discloses a light-sensitive urine inspection machine which comprises a case shell, a plurality of cup holder shells are arranged at one end of the case shell, cup holder bin gates are arranged at other ends of the cup holder shells, cup bodies are arranged in the interior formed between the cup holder shells and the cup holder bin gates, and CCD light sensors are arranged on inner walls of the cup holder shells. Cup covers are arranged at upper ends of the cup bodies, T-shaped pistons are arranged in the middles of the cup covers, pipelines are arranged at lower ends of the cup bodies, circular openings are formed in the middle of the pipelines, sealing gaskets are arranged in the circular openings, springs are arranged at the lower ends of the sealing gaskets, detection windows are arranged on sides of the pipelines, and one end of each detection window is covered with color test paper. A urine conveying liquid path system used in a traditional urine analyzer is avoided,a flushing water tank and a waste liquid recycling tank do not need to be arranged, the cost is saved, the space is saved, the pollution is prevented, and the efficiency is improved.

The invention belongs to the chemical technical field and particularly relates to a method used for enhancing the index of biobutanol sulfuric acid color test. The invention discloses the method used for enhancing the index of biobutanol sulfuric acid color test and the method adopts oxidants and / or absorbents and / or distillation to treat the biobutanol to lead the index of biobutanol sulfuric acid color test to be less than 20#. The method disclosed by the invention aims to lead the index of sulfuric acid color test to be less than 20# (platinum-cobalt) and even less than 5# (platinum-cobalt) without decreasing other indexes of the biobutanol product. The biobutanol product produced by the method can thoroughly meet the requirements of clients needing the following products of butyl acetate and butyl acrylate and the like. The invention expands the application space for biobutanol.

The invention discloses a coating color test display device. The coating color test display device comprises a color tester shell, a working space is formed in the color tester shell, a color test mechanism is arranged in the working space and comprises a motor fixedly arranged on the inner wall of the rear side of the working space, a motor shaft is controlled on the front end surface of the motor, a first winding wheel is fixedly arranged on the motor shaft, and a sliding space is formed in the first winding wheel. The coating color test display device is internally provided with a square mold and a cylindrical mold for coating color testing, color testing is comprehensive, and the effect is good; automatic smearing operation can be conducted after coating is manually poured, through movement of cloth and rotation of the molds, the coating can be evenly smeared on the surfaces of the molds, the color of the coating is fully displayed, and the good overall display effect is achieved;and the coating color test display device is high in automation degree, manual operation is less, the time and labor are saved, and the possibility of being stained by the coating is reduced.

The invention relates to a lipstick color testing method, a lipstick color testing device and lipstick color testing equipment, which are applied to the technical field of computers.The method comprises the steps of: obtaining a to-be-tested color video stream of a user; determining an area to be colored in the video stream; obtaining lipstick number information selected by a user; coloring the area to be colored according to the lipstick number information; and outputting the colored video stream. According to the method, the video stream is colored by acquiring the video stream, so that thevideo stream does not need to be smeared on lips, the operation of a user is greatly facilitated, manual operation is not needed, a smearing pen is not needed, the to-be-colored area is directly determined in the video stream and colored, and the smearing pen does not need to be worried about being lost; besides, the color test result is output through the video, so that the user can dynamically know the color test condition, and the color test process is more intuitive.

A system and method for creating a remote custom rendering profile and automatically delivering and installing the resulting remote custom profile into a digital front end (DFE) in order to perform color management for a rendering device. A color test rendering job comprising color swatches with a number of additional information can be forwarded to a remote service provider and the test job can be scanned and the custom rendering profile can be generated utilizing a profiler application. The resultant rendering profile can then be electronically transferred back to the rendering device based on the additional information and can be installed without user intervention.

A color test pattern comprising color patches can be printed together with an image (text and / or pictures, for example) of a print job. After printing, reflections, known as flare, from the image mayadversely affect measurements taken of the color patches. To help reduce the effects of flare, a determination is made prior to printing as to the layout of the color patches. The determination involves comparing the color properties of the color patches with those of the image.

The invention relates to the field of recycled plastic quality evaluation, and provides a multi-dimensional quality evaluation method for recycled plastic. The method at least comprises physical and mechanical property test, safety test, color test, impurity quantitative test, molding surface test, odor grade test and metal content test. The method is used for evaluating the quality of the recycled plastic from multiple different aspects, is comprehensive and accurate, has very high practicability, can improve the market value of recycled products of the recycled plastic, is beneficial to recycling and re-classification, and realizes real resource cyclic utilization.

This invention provides a system and method for displaying color match information on an acquired image of an object. A model / pattern having a plurality of color test points at locations of stable color is provided. A display process generates visible geometric shapes with respect to the color test points in a predetermined color. An alignment process aligns features of the object with respect to features on the model so that the geometric shapes appear in locations on the object that correspond to locations on the model. The geometric shapes can comprise closed shapes that surround a region expected to be stable color on the object. Such shapes can define circles, squares, diamonds or any other acceptable closed or open shape that is visible to the user on the display.

The invention discloses a method for detecting the alcohol content of liquor based on a color-changing nano material. The detection method comprises the following steps: firstly prepare a color-changing nano-material test paper sheet, drop different concentrations of alcohol onto the test paper sheet, take a picture after the test paper sheet develops color, and the photo is processed and read in grayscale, and then the grayscale value Fitting with the alcohol content to obtain a linear regression equation, and finally drop the alcohol solution to be tested onto the color test paper, take a photo of color development, and perform grayscale processing on the photo, read the gray value of the photo and substitute it into the linear regression equation, that is, The alcohol content in the sample to be tested. The invention utilizes the color-changing nanometer material to construct the colorimetric test paper for the determination of the alcohol content of liquor, without enzymatic color reaction and special instruments. Compared with the prior art, the present invention only needs to use the test paper to realize the rapid determination of the alcohol content, which is very suitable for the rapid real-time detection of the liquor alcohol content by the market supervision department.

The invention provides an evaluation method for the food chewing efficiency, and the method is easy in manufacturing of a sample for detection, is simple in detection process, is objective in detection result, and is high in accuracy. In the technical scheme of the invention, the method comprises the steps: taking food-grade paraffin with two colors as raw materials to prepare a mixed color test material for a chewing test; acquiring a to-be-detected sample image based on an image acquisition device, extracting a to-be-detected parameter from the to-be-detected sample image based on a chewingefficiency evaluation model constructed by a Fisher discriminant analysis method, and inputting the to-be-detected parameter into the trained chewing efficiency evaluation model for automatic identification and classification.