5815 results about "Color difference" patented technology

A color imaging apparatus comprising: a single-plate color imaging element including color filters arranged on pixels arranged in horizontal and vertical directions where all colors are arranged in each line in the directions; weighted average filters with filter coefficients set in a local area extracted from a mosaic image acquired from the color imaging element corresponding to the weighted average filters so that proportions of sums of the filter coefficients of each color in the lines in the horizontal and vertical directions are equal; a weighted average calculation unit that calculates weighted average values of each color; a demosaicking processing unit that calculates a pixel value of another color at a pixel position of a target pixel of demosaicking processing and that interpolates a pixel value of the target pixel based on a color ratio or a color difference of the calculated weighted average values to calculate the pixel value.

A light-emitting device (2) including a light-emitting element (2a), a first phosphor (2b), and a second phosphor (2c). The light-emitting element (2a) emits light L1 having a wavelength range within the visible region. Upon receipt of the light L1, or light L3 originating from the second phosphor (2c), the first phosphor (2b) emits light L2 having a wavelength range, which differs from that of the first light L1 and the third light L3, but falls within the visible region. Upon receipt of a specific wavelength component (ultraviolet light, or the like) included in external light, the second phosphor (2c) generates the light L3 whose wavelength range is substantially the same as that of the light L1, thereby radiating the first phosphor (2b) with the light L3.

A method for forming a final digital color image, includes: capturing an image using an image sensor having panchromatic pixels and color pixels corresponding to at least two color photoresponses; providing from the captured image a digital high resolution panchromatic image and a digital high resolution color differences image; and using the digital high resolution panchromatic image and the digital high resolution color differences image to produce the final digital high resolution full color image.

The apparatus comprises a correction unit composed of a video camera module for capturing the color information of the screen, an image data buffer module, and a main control module used for receiving and executing the computer command. Said video camera module and image data buffer module are respectively connected to the multi-screen display wall and computer via the main control module. The method comprises: appointing the image displayed by each display unit on the multi-screen display wall; said video camera module shoots at least one picture and saves it in the image data buffer module; the computer extracts the color information from each display unit; according to the color of each display unit, the computer corrects the difference between said display units.

A disposable absorbent article comprising a front waist region, a rear waist region, and a crotch region, wherein said absorbent article further comprises at least three discrete elements each comprising at least one visible surface; wherein at least three or more of the visible surfaces comprise an imparted color wherein said colors are color matched. Color matching exists when said colors are contained within a specified CIELab color space volume, have a specified hue difference, or total color difference.

The invention discloses an automatic guidance system based on radio frequency identification labels and vision, and the method of the automatic guidance system. The invention is characterized in adopting a four-wheel structure, wherein two front wheels are used for steering and two rear wheels are used for driving; a direct current motor is used as the travelling and driving device, which is driven to steer by a stepping motor; the invention is provided with a wheel steering angle positioning device, so the invention has relatively high dynamic response ability; a black and white parallel guide belt is adopted as a guide path, with the radio frequency identification labels discontinuously laid below, and red work station characters arranged at both sides; CCD collects road surface information, and the brightness of light source adaptive controls according to image gray information; characters are extracted by utilizing color differences; straight lines are rapidly HOUGH transformed and identified; a control signal is sent to AGV controller after processed by an industrial control computer, and the direct current motor and the stepping motor are controlled. In order to effectively realize the communication dispatch between AGVS in real time, radio frequency identification labels are adopted for positioning, and a wireless transceiver module is adopted for communication between AGVS and a host. The invention has the advantages of good environmental adaptability and navigation precision, and lower cost.

A method for segmenting a color document into regions of text and halftone discriminates between text and halftone by examining the texture of the document. A color document is digitized, and a color space transform is preferably applied to the digitized document. The texture of the document is identified and a noise reduction step is preferably applied. Bounding boxes (blocks) within the document are identified and then the areas within the bounding boxes are classified as either text or halftone. Two alternative methods are described for examining the document texture. In the first method, a windowing operation is applied to either an intensity image or a color difference image. In the second method, a wavelet transform step combined with Fuzzy K-Mean clustering is applied. Bounding boxes are classified as either text or halftone based upon the relative periodicity of a horizontal or vertical (or both) histogram of each bounding box.

A system is configured to calculate an evaluation index of sample ink amount data from a color difference evaluation index and an image quality evaluation index and create a profile on the basis of a sample with a high rating value. When the image quality evaluation index is predicted, the image quality evaluation index corresponding to any sample ink amount data is estimated based on a profile produced on the basis on actual evaluation. A printer driver is configured to create a plurality of profiles by using different indices in this system and to perform color conversion by using the plurality of profiles. The plurality of profiles are appropriately selected according to the user's needs, printing conditions, and type of printing object image.

In order to allow a user to arbitrarily set color processing parameters which determine the color reproduction characteristics of a digital camera according to user's preference, an image processing unit obtains color data by performing the same processing as that performed by the digital camera with respect to the sensed data of each color patch included in a color chart by using color processing parameters. A changing unit displays, on a display unit, a target data changing window which presents color data and the target data (the target color of color reproduction) of each color patch and allows the user to change the target data. A parameter editing unit edits color processing parameters so as to reduce the color difference between the changed target data and color data. A data input / output unit transmits the edited color processing parameters to the digital camera.

Provided is a method of removing noise from digital moving picture data reducing the number of frames used in a temporal filtering operation and able to detect motion between frames easily. The method comprises a method of spatial filtering, a method of temporal filtering, and a method of performing the spatial filtering and the temporal filtering sequentially. The spatial filtering method applies a spatial filtering in a YCbCr color space, preserving a contour / edge in the image in the spatial domain, and generating a weight that is adaptive to the noise for discriminating the contour / edge in the temporal filtering operation. The temporal filtering method applies temporal filtering based on motion detection and scene change detection, compensating for global motion, the motion detection considering the brightness difference and color difference of the pixels compared between frames in the temporal filtering operation, and a weight that is adaptive to the noise for detecting the motion in the temporal filtering operation. The spatial filtering method is preferably performed first, and the temporal filtering method is performed with the result of the spatial filtering.

The present invention is directed to systems and methods for processing 2-D to 3-D image conversion. The system and method includes erode filling when an object has been removed from an image. In one embodiment, a target binary t image mask of the removed object is used for comparison with a binary source mask of the image. In an iterative process, color differences between pixels in the target mask and pixels in the source mask are identified and the pixels in the target mask are changed working from the periphery of the target mask to the center of the mask. Color noise is eliminated in the filled region of the target mask and, if desired, random color noise is added to the filled target mask.

The invention discloses a video shot detection method based on histogram improvement and a clustering algorithm, and relates to image processing techniques. According to the method, the histogram improvement and the clustering algorithm are adopted to compute an intersection of histograms of two adjacent frames of images, and whether a shot change happens is judged according to histogram similarity; if the shot change happens, secondary detection on a shot boundary of the intersection of the histograms of the two adjacent frames of images is carried out by utilizing interframe gray scale / color difference values, pixel difference value computation on each block is carried out respectively by adopting non-uniform block weighting processing, pixel difference values and preset block frame differential threshold values are compared to obtain identification variables, the identification variable of each block is weighted and summarized, and the weighing and summarizing values and the preset block differential threshold values are compared to carry out shot detection. The video shot detection method improves shot detection accuracy and solves the problems of shot false detection, frame number discontinuity, and the like.

An optical system (100, 200, 400, 500) that projects a real image (140, 412, 504) into space and includes one or more features located along the optical path that enhance the viewability of the real image. The optical system includes a converging element (128, 208, 416, 528) for converging a portion of source light (104, 516) so as to form the real image. One viewability-enhancing features is the use of a broadband reflector-polarizer (124, 208, 408, 532) having high transmitting and reflecting efficiencies. Another viewability-enhancing features is the use of polarizing elements (116, 124, 136, 408, 420, 424) having substantially matched bandwidth responses and / or comprising an achromatic design. An additional viewability-enhancing feature is the use of a wide-view film (144) to increase the viewing angle of the image.

The invention discloses a living body human face detecting method based on a near-infrared and visible-light binocular camera, and belongs to the field of the receiver vision and security. The featurethat video and most paper cannot present an image under the infrared camera is used for effectively preventing the attack of a fake human face in the video, and the texture difference and the color difference of the real human face and the picture human face under the near-infrared camera and the visible light camera are used, a trained classifying model is capable of effectively distinguishing whether the human face is from the real human face or the fake human face in a picture. The accuracy of the living body detection of the method is high. The method is capable of effectively preventingthe attack of the fake human face in common means, such as the video and picture. Compared with a traditional algorithm, the accuracy is greatly improved, the safety is guaranteed, a user does not need to make a corresponding action or expression by cooperating with a machine, and the user experience is improved.

Provided is a method for enabling accurate and consistent imaging of selected colors within a document for various printing device configurations utilizing an automated spot color editor. The method includes determining appropriate target values for a selected color within a print job. The automated spot color editor modifies or adjusts the selected color by selecting a quality level, in the form of a color difference metric, and a maximum number of iterations, which is the maximum number of times the automated spot color editor is operated to calculate a CMYK color formula. Sample patch(es) are printed and analyzed for the selected target value and a CMYK color formula based on the color composition of the sample patch is calculated. The CMYK color formula is inserted into a spot color editing table. Through a graphical user interface, an operator may review the color formula for acceptance.

The present disclosure is related to the liquid crystal display device and the driving method for selectively controlling the average picture level. The liquid crystal display device of the present disclosure comprises: a brightness extractor separating a brightness and a color difference information from an input image; an user interface receiving a limit APL; an APL restrictor calculating an average APL of the input image based on the brightness from the brightness extractor, modulating the brightness of the input image such that the average APL is restricted lower than the limit APL when the average APL of input image is higher than the limit APL, and converting the modulated brightness and the color difference information into a RGB data; and a driving circuit representing the RGB data from the APL restrictor on a liquid crystal display panel.

An image forming apparatus includes: an image generating unit that reads an original and generates image data; a color-region input unit that inputs a color region subject to color matching in the image data; an object-color calculating unit that calculates an object color to which the color region is matched; a color-adjustment-condition setting unit that sets a plurality of color adjustment conditions on-which output of the object color under an image output condition is within an allowable color difference; a color-conversion-condition changing unit that selects one of the color adjustment conditions on which a color difference occurring in an entire color space is smallest, and that changes a color conversion condition; a color conversion unit that performs color conversion of the image data based on the changed color conversion condition; and an image output unit that outputs the image data subjected to the color conversion.

An anti-reflection film having a hard coat layer attaining both improvement in resistance to unevenness in interference under an artificial light source and solution to handling problems such as curling and brittleness and sufficient anti-reflection properties, scratch resistance and productivity is provided. The anti-reflection film includes a transparent support, a hard coat layer, and a low refractive index layer having in this order. The dry thickness of the hard coat layer is from 6 to 15 μm. The color difference of light from an artificial light source reflected by the hard coat layer between at an arbitrary point and another arbitrary point disposed 5 mm apart therefrom in the film longitudinal or crosswise direction is 2.0 or less as calculated in terms of ΔEab* value of CIE.

The present invention discloses a hot-pressing carbonization strengthening method of timbers, which includes drying, planing, hot-pressing carbonization, cooling and other steps. The present invention applies a hot press as a timber-carbonizing device, and the timbers under the state of compression are processed by hot-pressing carbonization. The present invention is characterized in that the investment on carbonization devices is less, the carbonization process is simple, the production is safe, the production efficiency is high, the consumption of heat energy is little, and the production cost is low; moreover, the thickness of the carbonized timbers is not limited, the defects of the timbers, such as deformation, cracking, stiker stain, color difference, knot fall-off, etc., do not occur in the process of production, so the quality of products is high; not only is the size stability and noncorrodibility of the carbonized timbers improved, but also the density and mechanical property of the timbers is increased.

An endoscope apparatus comprises: an endoscope comprising an imaging device that forms color image signals of a body to be observed; a Y / C signal processing circuit that forms brightness / color difference signals from a color image signal obtained by the imaging device; a storage portion that stores Y / C matrix data for forming a spectral image based on the brightness / color difference signals; and a Y / C spectral image forming circuit that conducts matrix calculation by the Y / C matrix data of the storage portion and the brightness / color difference signals output from the Y / C signal processing circuit and forms a spectral image of an arbitrarily selected wavelength range.

The present invention relates to an image processing device and method, and program, wherein compression efficiency can be improved.With regard to a luminance block AY of 4×4 pixels, motion prediction and compensation processing is performed on the luminance signals using a template region BY which is configured of decoded pixels and is adjacent to the block AY, thereby obtaining motion vector information VY. a color difference TP motion prediction / compensation unit performs motion prediction on a 2×2 pixel color difference block AC regarding color difference signals Cb and Cr, using a template region BC which is configured of decoded pixels and is adjacent to a luminance block AC, with a range E, centered on motion vector information VY′ obtained by scaling the motion vector information VY, as the range of searching. The present invention can be applied to an image encoding device which performs encoding with the H.264 / AVC format, for example.

The invention discloses a printing color quality detecting method of integrating visual measurement, density measurement and color measurement, which comprises the following steps: (1) based on the prior control strips, adding a spot color block, and placing the spot color block into an ink key area corresponding to a spot color part in a printed matter; (2) printing on a machine; (3) extracting the printed matter after a printing machine is stabilized to carry out visual measurement inspection, and taking out the printed matter passing the visual measurement; (4) measuring the colorimetric value of the printed matter by a colorimeter, and using the colorimetric value of the printed matter, the specified value of a sample and the color difference value of a digital sample or the prior sample as standards of qualification judgment; and (5) monitoring the density by adopting a density detecting method during printing. The method integrates respective advantages of the visual measurement, the density measurement and the color measurement, can detect the printing color quality more accurately, is simple and convenient, and is quite suitable for detecting the color quality of the printed matter.

An image sensing apparatus comprising: a CCD, optical system for forming an image on the CCD; A / D converter for converting an image signal outputted by the CCD to a digital signal; color interpolator for performing color interpolation on the digital signal converted by the A / D converter and generating image data on R, G and B color planes; color space converter for converting RGB color space to YUV colorimetric system; and median filter for reducing pseudo color components, generated by the color interpolator, by controlling color difference signals U and V. By cutting high frequency components of the signal, filtered by the median filter, then thinning out YUV signals and performing JPEG compression, pseudo color components generated by color interpolation can be reduced.

This invention reduces degradation in quality of a resized image in obtaining the resized image. An image capturing apparatus includes an image sensor which converts an optical image into an electrical signal, an A / D conversion unit which converts an image signal output from the image sensor into digital image data, a color interpolation unit which executes color interpolation of the digital image data, a separation unit which separates the digital image data that has undergone color interpolation by the color interpolation unit into a luminance component and color difference components, an image size conversion unit which converts the image size of the luminance component and color difference components, and a lossless compression unit which losslessly compresses the luminance component and color difference components generated by the image size conversion unit.

A system and method for optimizing and quantifying movement in synchronous video are provided. An image-processing computer obtains a synchronous video image, which is converted to color bitmap frames. Each frame is then sub-divided into smaller pixel blocks. Processed independently, the size of each pixel block is reduced by truncation of the color resolution and the use of a limited color table for the pixel block. The cumulative color difference in the pixel block is calculated and if it is below a threshold, the pixel block data will not be saved. Alternatively, the pixel block data is compressed and saved. Upon decoding, the color difference between each pixel and the same pixel in the preceding frame is compared. The color difference is assigned a pseudocolor and is displayed on the screen. Larger color differences are represented with more pronounced pseudocolors.

In one or more embodiments, driver awareness may be calculated, inferred, or estimated utilizing a saliency model, a predictive model, or an operating environment model. An awareness model including one or more awareness scores for one or more objects may be constructed based on the saliency model or one or more saliency parameters associated therewith. A variety of sensors or components may detect one or more object attributes, saliency, operator attributes, operator behavior, operator responses, etc. and construct one or more models accordingly. Examples of object attributes associated with saliency or saliency parameters may include visual characteristics, visual stimuli, optical flow, velocity, movement, color, color differences, contrast, contrast differences, color saturation, brightness, edge strength, luminance, a quick transient (e.g., a flashing light, an abrupt onset of a change in intensity, brightness, etc.).

There is provided a signal conversion circuit which is suitably used in a multiprimary liquid crystal display device (especially a multiprimary liquid crystal display device which performs display in a vertical alignment mode), and a multiprimary liquid crystal display device having such a signal conversion circuit.A signal conversion circuit according to the present invention is for use in a multiprimary liquid crystal display device which performs display in a vertical alignment mode, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to the present invention applies a conversion to the video signal so that a color difference Δu′v′=((u′−u60′)2+(v′−v60′)2) is 0.03 or less, the color difference Δu′v′ being defined by CIE1976 chromaticity coordinates (u′, v′) representing a chromaticity when the pixel is viewed from the frontal direction and CIE1976 chromaticity coordinates (u60′, v60′) representing a chromaticity when the pixel is viewed from a 60° oblique direction.

A color information processing method includes: inputting reference data including color information about each pixel or each pixel group of a reference medium and evaluation target data including color information about each pixel or each pixel group of an evaluation medium by an input means; performing an image matching process of image matching the input reference data and evaluation target data; setting a specific area which is a unit of evaluation and includes a plurality of pixels to each data item subjected to the image matching process; and comparing the color information items about each pixel or each pixel group in the reference data and the evaluation target data in the set specific area to calculate a color difference and performing an averaging process to calculate an average evaluation result for the specific area by a calculation means.