2900results about "Color measuring devices" patented technology

The invention discloses a method for quickly identifying and distinguishing the variety of corn, which belongs to the technical field of the detection of agricultural products. The method identifies the variety of the corn by an image processing technology quickly. Seed image information is obtained by a scanner, corn seeds are identified by a corn variety identification system on a computer, original image information is read, the image information of each pixel in each corn is stored as a 24-bit bmp format file, and the variety of the corn is distinguished by a trained neural network classifier after image processing and feature extraction are completed. The variety distinguishing rate of the model to an unknown sample is greater than 90%, which shows that a condition that the variety of the corn seeds is distinguished by image feature information is feasible. The invention has the characteristics of high automatization degree and quick, simple and convenient operation.

A spectral imaging system comprises a plurality of spectral units arranged in an array, each spectral unit of the plurality of spectral units comprising: a microlens having an optical axis; a spectral filter having a center wavelength and aligned with the optical axis; a fiber optic bundle, the fiber optic bundle having a curved light receiving surface and a planar light output surface, wherein the curved light receiving surface is aligned with the optical axis; and a plurality of pixel sensors configured to receive light from the planar light output surface of the fiber optic taper portion.

The invention discloses an LED optical parameter comprehensive testing device, belonging to the technical field of optical parameter measurement. The LED optical parameter comprehensive testing device is technically characterized in that one end of a horizontal base provided with a one-dimensional mobile platform is fixedly provided with an arc-shaped clamp provided with a fiber-optic probe and astandard luminosity probe, the other end of the horizontal base is fixedly provided with an arc-shaped light collector consisting of an arc fiber-optic array and a linear array CCD (Charge Coupled Device), and a rotary clamping table for holding an LED to be tested is arranged on the one-dimensional mobile platform; light information acquired by the fiber-optic probe is converted into a spectrum band by a spectrograph and then is sent into a computer, outputs of the standard luminosity probe and the linear array CCD are sent to the computer through the data acquisition unit, the computer performs corresponding processing and operation on measurement data through measurement software to finally obtain the luminescence characteristics of the LED to be tested. According to the invention, theproblem on comprehensively measuring the LED on a single measurement instrument is solved; and the LED optical parameter comprehensive testing device has the characteristics of simplicity for operation, compact structure, fastness for measurement, easiness for realization and the like.

Methods and electronic devices for performing color-based reaction testing of biological materials. The method includes capturing and interpreting digital images of an unexposed and later exposed paddle at various delay times within an automatically calibrated environment. The test paddle includes a unique identification mechanism (UID), a Reference Color Bar (RCB) providing samples of standardized colors for image color calibration, compensation and corrections, and several test-specific sequences of Chemical Test Pads (CTP). The method further includes locating the paddle in the image, extracting the UID and validating the paddle, extracting the RCB and locating the plurality of CTP in each image. The method further reduces image noise in the CTP and calibrates the image automatically according to lighting measurements performed on the RCB. To determine test results, the method further determines several distances between the CTP and its possible trajectory in the color space described by the Manufacturer Interpretation Color Chart.

Provided is a one-chip vitality measuring image sensor. The image sensor includes one chip where a plurality of IR pixels and a plurality of visible pixels are alternately disposed, IR pass filters which are disposed on the IR pixels, and color pass filters which are disposed on the visible pixels. In the image sensor, IR strength and color strengths are obtained from light which is incident to the IR pixels and the visible pixels, and a vitality of a subject is measured by comparing the IR strength with the color strengths.

A spectrophotometer 300, webcam 302 or other instrument measures the color composition and texture of a person's face 400 or other body part. A computer system 301 includes a processor 501 and a non-transitory, non-signal computer readable medium 500 containing machine readable instructions that accept data from a spectrophotometer 300 or like instrument and uses a main executable program 502 and a subroutine 504 for color analysis to derive a mix of color to create a cosmetic product matching or enhancing the color composition and/or texture of the person's face or other body part. The computer system 301 and subroutine for color analysis create machine readable instructions 505 for the firmware of a cosmetic blending and dispensing machine 508. In order to properly mix and dispense high viscosity and air bubble riddled cosmetic material, a medical grade peristaltic pump 354 is used with triangle needle nozzles 374.

The present invention relates to an apparatus, method, software algorithm and system for evaluating plants for conditions or characteristics. In one aspect, the method can include imaging at least a portion of the plant and evaluating the image for discriminating condition(s) or characteristic(s) of interest. In one example, soybean roots are imaged and the image is evaluated to discriminate between soybean cyst nematode (SCN) cysts and the plant roots to count the number of SCN cysts for the plant. In another embodiment, a plant is illuminated by a ultra-violet radiation selected to cause photo-induced fluorescence of a target, e.g. SCN cysts. The fluorescence emitted is collected and analyzed to discriminate between the target and the remainder of the plant.

A method for controlling the automatic chromaticity of printing machine by use of camera includes such steps as light printing a marker for detecting the chromaticity error, using a camera to take the digital image of the marker area, transmitting the digital image, detecting the chromaticity error, outputting chromaticity control signal, and fast regulating the position of printing drum.

The invention relates to a multi-channel portable colloidal gold test paper strip quick test device, which mainly comprises a detector, wherein the detector comprises a detecting part, an electrical part and a software detecting part; the detecting part comprises a plurality of mutually independent detecting channels; the electrical part comprises an ARM data processor, a keyboard and an LCD; image data detected by the detecting part are processed and displayed by the electrical part; and the software detecting part controls detecting steps. The device has a multi-channel detecting structure, and four channels can carry out the same detection item as well as different detection items. The device has the advantages of high detection speed, large amount of samples and great practical value.

This invention includes an RGB color camera for photographing an object under photographing illumination light, a simplified spectrophotometer for measuring a photographing illumination light spectrum, and a color correction device for calculating tristimulus value data of the object and converting the data into an input signal to a CRT monitor by using monitor profile data. On the observation side, a CRT monitor and illumination light colorimeter for measuring the tristimulus values of observation illumination light are arranged. A color correction device can perform color reproduction without being influenced by changes in the color perception characteristics of a person such as chromatic adaptation by reproducing a virtual illumination light spectrum having tristimulus values equal to those of the observation illumination light without measuring any observation illumination light spectrum.

An advanced cosmetic color analysis system (FIG. 1) analyzes the color of a three dimensional object (element 120) to produce a plurality of color values for distinct subsets of a portion of the object, and a cosmetic analyzer (element 150) combines the color values to produce a cosmetic color determination that has relative weightings of multiple cosmetic colors. Contemplated systems are particularly useful for determination of suitable cosmetic products (or composition thereof) to achieve a particular and desired cosmetic appearance.

A spectrometer includes a light source section that includes a plurality of LEDs having different emission wavelengths, a variable wavelength interference filter that selectively extracts light of a predetermined wavelength, a detector that detects the amount of light, and a control circuit section. The control circuit section includes a mode switching section that switches a calibration mode and a measurement mode, an outside light analysis section that analyzes characteristics of outside light in the calibration mode, a reference light setting section that set the amount of light emitted from each of the LEDs on the basis of the characteristics of the outside light, and a light source driving section that drives each of the LEDs on the basis of the amount of light emitted which is set in the measurement mode.

A spectrophotometer 300, webcam 302 or other instrument measures the color composition and texture of a person's face 400 or other body part. A computer system 301 includes a processor 501 and a non-transitory, non-signal computer readable medium 500 containing machine readable instructions that accept data from a spectrophotometer 300 or like instrument and uses a main executable program 502 and a subroutine 504 for color analysis to derive a mix of color to create a cosmetic product matching or enhancing the color composition and/or texture of the person's face or other body part. The computer system 301 and subroutine for color analysis create machine readable instructions 505 for the firmware of a cosmetic blending and dispensing machine 508. In order to properly mix and dispense high viscosity and air bubble riddled cosmetic material, a medical grade peristaltic pump 354 is used with triangle needle nozzles 374.

Systems and methods for chip-integrated label-free detection and absorption spectroscopy with high throughput, sensitivity, and specificity are disclosed. The invention comprises packaged chips for multiplexing photonic crystal waveguide and photonic crystal slot waveguide devices. Other embodiments are described and claimed.

An apparatus and method for estimating the power spectral density of an unknown illuminant that does not require direct spectral measurements. The apparatus and method allows calibration of color images taken with commercially available digital cameras in arbitrary illumination. Besides an imaging system, a digital computer, a means for transferring image information from the imaging system to the digital computer, and software to carry out the method, the only additional equipment a photographer needs is a set of color standards.

The present invention discloses a composition method of a gantry four-dimensional automatic measurement platform for detecting photochromic performance of display screens and a gantry four-dimensional automatic measurement platform using the method. The present invention relates to the automatic measuring technology of the photochromic performance of display screens, and comprises a platform base, a gantry frame, an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis lifting mechanism, and a display screen-carrying rotating platform. By moving the mechanisms to control the circuit, the four-dimensional automatic measurement platform for detecting photochromic performance of display screens is flexibly controlled to accomplish the three-dimensional move of the photochromic measuring instrument and the accurate one-dimensional rotation of the display screen to be measured, the present invention is characterized in stable movement of the photochromic measuring instrument, small rotation radium of the display screen, novel structure, small driving power needed, small size, light weight, low cost, rapid measuring speed, high reliability and so on. The present invention can be widely applied to the photochromic automatic detecting system of LCD or LED television screen, display screen, or mobile phone screen and so on, and the present invention can precisely adjust the coordinate position of the test points and the angle of the display screen intelligently according to the detecting requirement of photochromic performance of the display screens under the computer management, and rapidly accomplish the detection of photochromic performance.

Spectrally matched color outputs are obtained using data from a real-time sensor, such as, for example, a spectrophotometer on the output trays of a marking devices to determine the output spectra of a reproduced image. The output spectra of the reproduced image is compared with an output spectra of a target spectra stored in a computer memory to produce a mapping table that will spectrally match all subsequently reproduced color images in real-time. Thus, output color spectra are matched between displays and prints, scans and prints, scans and displays, or copies and prints.

The invention relates to an automatic grading system and an automatic grading method based on mass tobacco leaf data. The automatic grading system belongs to a system for carrying out analysis, storage, retrieval and automatic grading on tobacco leaf images by utilizing computer vision, image analysis, machine learning, big data retrieval and artificial intelligence technological algorithms. A mass data retrieval technology is introduced into an automobile tobacco leaf grading system, and corresponding databases and efficient retrieval engines are built, so grading results are more accurate, and the big data concept can become an irresistible trend along with the computer technology development. An artificial intelligence expert system algorithm is introduced, tobacco leaf knowledge in the specific fields is utilized for constructing an expert knowledge base, various complicated tobacco grading problems which can only be solved by human experts are simulated, and the computer intelligence with the same problem solving capability as the experts in the field is reached.

The invention relates to a method for controlling an automatic real-time color collection robot. The method comprises the steps as follows: (1) the top of a robot is provided with a coping which are distributed with a plurality of color code samples; (2) the color code samples are sampled, and all collected color code information is processed for threshold segmentation; (3) when the robot gets a color overall image, all color block information in the image is obtained by fast color segment and a sequential connected region searching algorithm; (4) relative color block information is obtained by step (3), a color block is picked up and processed for triangular/trapeziform template matching with a template which is stored in advance to find out a proximal template, so as to calculate the pixel coordinate and the angle information in the current static overall image of a target corresponding to the template; (5) the self-positioning operation of the robot is finished; and (6) the path layout of the robot is determined, so as to realize the automatic movement of the robot.

An optical system used in an optical measuring apparatus for measuring optical characteristics of, for example, a liquid crystal display panel (LCD panel) guides rays emitted from the LCD panel and having exit angles equal to or smaller than a predetermined maximum exit angle alpha. A lens of the optical system satisfies the following two equations.Hereupon, the symbol "f" designates a focal length of the lens; the symbol "h" designates the maximum height of the photosensitive plane of the photosensor from an optical axis of the lens on the photosensing plane; the symbol "L" designates a distance from a principal point of the lens in the image side to the photosensing plane; and the symbol "H" designates the maximum height of the object from the optical axis of the lens.