222 results about "Color ratio" patented technology

A method for determining an ambient light type is described. The method includes receiving measurement information from multiple photodetectors configured for different light spectra, calculating a color ratio using the measurement information, obtaining a correction value using the color ratio, applying the correction value to at least one of the first and second measurement information to obtain a photopic illuminance value, and determining an ambient light type using the photopic illumination value and the color ratio.

It is a main object of the present invention to suppress the differences of color ratios of B/G and R/G when the film thicknesses of antireflective films and insulation films vary at a processing process. The present invention is a photoelectric conversion apparatus including a plurality of light receiving portions arranged on a semiconductor substrate, antireflective films formed on the light receiving portions with insulation films put between them, and color filter layers of a plurality of colors formed on the antireflective films, wherein film thicknesses of the insulation films and/or the antireflective films are changed such that changing directions of spectral transmittances at peak wavelengths of color filters on sides of the shortest wavelengths and at peak wavelengths of color filters on sides of the longest wavelengths after transmission of infrared cutting filters may be the same before and after changes.

The invention provides a projection system, which comprises at least two light-emitting surface groups, a light modulator, an illuminating optical system and a light source controller, wherein each light-emitting surface group comprises a plurality of light-emitting surfaces of emitting different colors; the illuminating optical system is arranged between the at least two light-emitting surface groups and the light modulator; the illuminating optical system comprises at least two light paths which correspond to the at least two light-emitting surface groups respectively; light emitted from each light-emitting surface group evenly irradiates a specific input region of the light modulator through the corresponding light path; and the light source controller adjusts the illuminating brightness and/or color ratio on the corresponding input region of the light modulator by individually controlling at least one of the light-emitting surface groups.

A white-balance method for use in a multi-exposure imaging system having an image capturing unit is provided. The method includes the steps of: utilizing the image capturing unit to simultaneously capture a first image and a second image of a scene with a first exposure value and a second exposure value, respectively, wherein the second exposure value is smaller than the first exposure value, and the first exposure value and the second exposure value have individual exposure time and exposure gain; performing light source detection on the second image to obtain light source information and a corresponding light source color ratio of the scene; and performing a color gain process on the first image according to the light source color ratio to generate an output image.

The invention discloses a method for preparing a caramel colorant by using multistage membrane separation. The method comprises the following steps of: mixing sugar sources and amino acid or ammonium salt, heating the mixture in solution or suspension state to the temperature of between 110 and 150 DEG C, and holding the temperature; passing an obtained reaction liquid through a membrane A under the pressure of between 0 and 5 bar and at the temperature of between 4 and 60 DEG C, and collecting an entrapped component and filtrate; homogenizing the entrapped component by using a colloid mill, an ultra-high pressure microfluidizer or an ultra-high pressure homogenizer, passing the homogenized component through the membrane A again for filtration, and collecting a filtered component; merging the filtrate, passing the filtrate through one or more of membranes B, C and D step by step under the pressure of between 0 and 5 bar and at the temperature of between 4 and 60 DEG C, and collecting an entrapped component and a filtered component; and concentrating or drying the entrapped component to prepare a caramel colorant product. Through the selection of multistage membranes, the aim of preparing the caramel colorant which meets the requirements of different color ratios, red indexes and yellow indexes, and improves food quality and safety is fulfilled.

The invention relates to the field of image processing, and discloses a white balance adjusting method and device. The method includes the following steps: obtaining the corresponding RGB pixel values through distinguishing green pixels and grey pixels; confirming impossible light source points as per the RGB pixel values respectively corresponding to the green pixels and the grey pixels; then performing comprehensive judgment as per the impossible light source points to confirm the accurate actual color-ratio factor of the light source points; then calculating the white balance gain value as per the accurate actual color-ratio factor of the light source points; and finally performing the white balance adjustment.

The invention discloses an automatic focusing system used for regulating a solar condensing lens and a focusing method of the automatic focusing system. The automatic focusing system comprises image display equipment, image collection equipment and image data processing equipment, wherein the image collection equipment is used for collecting data of images reflected by reflectors; the image display equipment is used for displaying display images which are controlled to be output by the image data processing equipment; the image data processing equipment is used for controlling the image display equipment to output the display images corresponding to region areas of the reflectors of a condensing system in a one-to-one mode, the display image of the region area of any one reflector and display images of region areas on the peripheries of the reflectors are different color images, and the image collection equipment is controlled to perform analysis and processing and output corresponding focusing data after collecting the corresponding images. According to the automatic focusing system, the inclination angle is judged by observing the image colors of the reflectors, the color ratios of discs are calculated and are compared with a pre-stored empirical data base, regulating efficiency is improved substantially, and the regulating time is shortened.

The invention relates to a detection method of quality index of yellow rice wine, in particular to a method for rapidly detecting quality index of yellow rice wine, which has simple operation, improved detection speed and greatly improved time efficiency and production efficiency. The method comprises the following steps of: (1) scanning a yellow rice wine sample to be detected by Fourier transform near infrared spectrometer and a liquid fiber probe to obtain the spectrum of the yellow rice wine sample; and (2) sending the spectrum of the yellow rice wine sample obtained in step (1) to a quantitative spectrum analysis software package, and calculating the contents of quality indexes of the yellow rice wine sample by using a pre-constructed quality index model of the yellow rice wine, wherein the quality indexes comprise one or more of alcohol degree, total acid, total sugar, ammonia nitrogen, non-sugar solids, volatile ester and color ratio. The invention has the advantages of simple operation, improved detection speed, no pollution in the detection process and nondestructive detection, and can be further used for production line to achieve online detection and control.

The invention discloses a target tracking method oriented to a video with a low frame rate. The method comprises the following steps: (1), representing a target region by a method integrating a dominant color and a space distribution characteristic thereof; (2), employing a cross color ratio-based matching criterion to carry out similarity matching on a candidate region and the target region; (3), employing a parameter integrogram-based fitness function to characterizing a matching degree of a sample particle and a target template; and (4), utilizing an annealing particle swarm optimization framework with simulation of biological swarm intelligence to search abrupt motions caused by a video with a low frame rate. According to the invention, the effective target tracking method is realized; and moreover, experimental results show that the provided method, compared with other classical low frame rate tracking methods, has good effectiveness and robustness.

The invention discloses fluorescent wide chroma test paper for visually detecting copper ions as well as a preparation method and application of the test paper. The preparation method comprises the following steps: by taking a three-color ratio fluorescence probe as ink and taking filter paper as a solid-phase carrier through an inkjet printer, uniformly printing, thereby obtaining the test paper capable of visually detecting the copper ions, wherein the three-color ratio fluorescence probe refers to blue carbon dots, green quantum dots and red quantum dots, and the quantum dots are all modified by 3-mercaptopropionic acid. The three-color ratio fluorescence test paper is constructed to be used for visually detecting the copper ions by utilizing double-quenching principle first, the prepared detection test paper has the advantage that the color change range is wide compared with the conventional double-ratio fluorescence test paper, and along with addition of the detection object, test paper colors can be obviously identified by naked eyes from light scarlet, light flesh color, deep orange, grass green, dark olive green, slate blue, royalblue to cyanic color (Figure 4).

Calculation of GR and GB color ratios in a local area uses a weighted average filter having weighting coefficients where the ratio of total sums of weighting coefficients for G and R pixels is 1:1, and weighted average filter having weighting coefficients where the ratio of total sum of weighting coefficients for G and B pixels is 1:1, respectively, on pixel lines in a horizontal direction and a vertical direction in a kernel. R and B pixel values are then calculated by interpolating the pixel value of a pixel to be processed with the G pixel value at the pixel position to be subjected to a demosaic process and the color ratio.

The invention discloses a method for preparing caramel pigment mainly used as the liquor color mixing agent and food additive, the preparation process comprises the steps of disintegrating, filtering, concentration. The method can not only meet the color ratio and stability requirement for the cane sugar production, but also preserve the eighteen amino acids and part of the trace elements in the zein.

The invention discloses a process for producing caramel pigment, comprising the following procedures of a) gelatinization procedure, b) liquefaction and saccharification procedure, c) hydrolysis procedure and d) ammonification procedure, wherein the b) liquefaction and saccharification procedure comprises the following steps: adding alpha-amylase and saccharifying enzyme to the gelatinized purple sweet potato with the pH of 4.5-6.0 and the temperature of 70-95 DEG C, and reacting for 30-60min, wherein the weight proportion of the purple sweet potato, the alpha-amylase and saccharifying enzyme is 1:0.01-0.04:0.01-0.04. Compared with the prior art, in the invention, the purple sweet potato is taken as the raw material, therefore the extraction procedure of starch is saved and the process flow is simplified; furthermore, the purple sweet potato contains natural pigment and has good acid resistance, salt resistance and good stability; the caramel pigment produced by taking the sweet potato as the raw material has high color ratio and good stability, generates no pollutants during the hydrolysis process, shortens the production period and saves the cost; and the caramel pigment prepared by utilizing the sugar solution through a high-pressure ammonia method has good color ratio and good product quality.

The invention relates to a fabric image color feature extraction method. According to the method, a color space quantification improvement method based on an essential color clustering method is provided during image color quantification grading, so that gray level quantification is better conducted on the color of each pixel in an image; meanwhile, the essential color histogram of the image and the color ratio information of each essential color are extracted with the essential color weight histogram, so that the accuracy of fabric image retrieval is improved and a fabric image meeting requirements of users is retrieved efficiently.

The invention discloses a special LED illumination method and system for laying hen and breeding chicken scale breeding. LED lamps A or LED lamps B are mounted in an enclosed chicken house or a half-open chicken house. The average light intensity of the light reaching the chickens breeding plane and emitted by the LED lamps A or LED lamps B is 5-80 Lux, wherein the average light intensity is adjusted through an LED dimming controller or through the replacement of LED lamps of different power. The lighting time is controlled through a manner that a manual switch, a relay switch or an automatic timer is connected to a power supply. The dominant wavelength of each LED lamp A is 584.0 nm, the color temperature of each LED lamp A is 2700K QUOTE plus or minus 10%, the color ratio of R is larger than 20%, and the color ratio of B is less than 1.5%. Each LED lamp B is composed of white beads and red beads which are uniformly arranged in a cross manner with the ratio being 1:5-5:1. The method and system are mainly applied to laying hen and breeding chicken scale breeding in laying hen or breeding chicken houses, can improve the laying rate, can increase the egg yield, can reduce the poultry cannibalism, and can enhance the physical health of laying hens or breeding chickens.

The invention provides an image processing method and electronic equipment. Light in an environment, where a photographed object is, is analyzed through a first camera in the electronic equipment, such that an automatic white balance parameter is obtained; based on the automatic white balance parameter, automatic white balance adjustment of an image photographed by a second camera in the electronic equipment is carried out, such that the deviation between the colour of the image and the real colour of the photographed object is in a deviation range; when the environment, where the photographed object is, does not comprise white or gray-level colour that the proportion of R, B to G is 1:1:1, the deviation between the colour of the image and the real colour of the photographed object is still in a deviation range; and thus, the deviation between the colour of the photographed image and the real colour of the photographed object is reduced while the colour requirement of the environment, where the photographed object is, is reduced.

The invention relates to a common-process production technique of caramel color with the color ratio of at least 30000EBC, which comprises the following steps: metering and concentrating a raw material, regulating the pH value to 7.0-11.0, adding sodium polyphosphate and propyl gallate as catalysts, carrying out pressurized reaction, terminating the reaction when the color ratio is satisfactory, cooling, filtering, blending, metering and filling. The caramelization reaction is performed by adding the catalysts under increased pressure under alkaline conditions, thereby lowering the activation energy of the reaction system; and thus, the reaction can be performed more easily, and can obtain the high-color-ratio product more easily. No material condensation water is discharged, thereby preventing evaporation heat dissipation and lowering the reaction energy consumption. Since no condensation water is discharged, no peculiar smell or COD (chemical oxygen demand) pollution is generated in the reaction process.

Methods and systems for robust and flexible extraction of image information using color filter arrays. Methods are provided comprising receiving a sample set of data generated by transforming and sampling an optical property of an original color image in a spatial basis, wherein the transformation effected is substantially local in the spatial basis and has partially overlapping spectra. A generalized inverse of the transform augmented with regularization constraints is applied to the sample set of data to infer original image data. According to one approach the generalized inverse does not use variational minimization or assume constant color ratios. According to an alternative approach regularization can take the form of predetermined spectral constraints applied to the sample set of data to infer the original image data. According to another alternative approach regularization can promote spectral sparsity. Methods are also provided for creating an optical color filter array, for sampling an image, for reducing noise in an image, and for computing a sparse representation of an image signal. Systems for carrying out these and other methods are also provided.

The invention discloses a CLHAE image enhancement method based on gray level compression. The method comprises: converting a current RGB color space image into a YUV color space image, and extractingeach initial pixel value of image brightness Y; performing uniform and non-overlapping partitioning, gray level compression, histogram statistics, contrast limitation, and histogram equalization on the image brightness Y, to obtain a gray level mapping table of each block; performing bilinear interpolation algorithm calculation on the image brightness Y, to obtain each adjusted pixel value of theimage brightness Y; calculating a color conversion ratio between each initial pixel value of the image brightness Y and the adjusted pixel value, and applying to the current RGB color space image, tooutput a new RGB color space image. The method can improve processing efficiency, expand a dynamic range of an image and enhance contrast of the image on the basis of keeping the color ratio of an original image, thereby realizing fast and efficient image enhancement effect.

The invention discloses the production process of a concentrated pomegranate clear juice, which solves the technical problems that are difficult to be solved in the production process of concentrated pomegranate clear juice, such as browning, high turbidity and haze and achieves the industrial production of high-quality concentrated pomegranate clear juice. The technical scheme of the invention comprises following steps: quality control of pomegranate, cleaning, peeling, adjusting pH value, squeezing, pre-pasteurization, hydrolyzing with enzyme, filtering, evaporation for concentration, post-pasteurization and aseptic packaging. The concentrated pomegranate clear juice obtained by the invention has wine red color, pH value of 2.8 to 3.7, turbidity 0 to 25 NTU, transmittance (T625) equal to or larger than 90% and color ratio (A520nm/A430nm) equal to or larger than 1.0. Tests show that pectin and the starch are negative, and no pathogenic bacterium is detected.