Abstract: Systems and methods for overlaying a second image/video data onto a first image/video data are described herein. The first image/video data may be intended to be rendered on a display with certain characteristics—e.g., HDR, EDR, VDR or UHD capabilities. The second image/video data may comprise graphics, closed captioning, text, advertisement—or any data that may be desired to be overlaid and/or composited onto the first image/video data. The second image/video data may be appearance mapped according to the image statistics and/or characteristics of the first image/video data. In addition, such appearance mapping may be made according to the characteristics of the display that the composite data is to be rendered. Such appearance mapping is desired to render a composite data that is visually pleasing to a viewer, rendered upon a desired display.

Abstract: Provided in the present invention is a method for transmitting a broadcast signal. The method for transmitting a broadcast signal, according to the present invention, provides a system capable of supporting a next-generation broadcast service in an environment supporting a next-generation hybrid broadcast which uses a terrestrial broadcast network and an Internet network. Also provided is an efficient way of signaling encompassing the terrestrial broadcast network and the Internet network in the environment supporting the next-generation hybrid broadcast.

Abstract: A transmitting method according to one aspect of the present disclosure is a transmitting method of a playback device, and includes: when a version of a transmission protocol is a first version, transmitting first meta data to a display device without transmitting second meta data to the display device, the transmission protocol being used to transmit a signal between the playback device and the display device, the first meta data including information that is commonly used for a plurality of images included in a continuous playback unit of a first video signal and relates to a luminance range of the first video signal, and the second meta data including information that is commonly used for a unit subdivided compared to the continuous playback unit of the first video signal and relates to the luminance range of the first video signal; and when the version of the transmission protocol is a second version, transmitting the first meta data and the second meta data to the display device.

Abstract: A device for image processing includes a video signal receiver, for receiving at least one video signal, wherein an image frame of the at least one video signal includes: a plurality of pixel groups; a color engine; and an output stage, coupled to the color engine, for outputting the adjusted at least one video signal. The color engine includes: a local adjusting unit, configured to locally adjust at least one of color hue, luminance factor and saturation of a specific pixel group of the pixel groups without adjusting any other pixel group of the pixel groups, wherein the specific pixel group has color hue in a predetermined range that is a part of a full range of color hue; and a global adjusting unit, configured to globally adjust at least one of color hue, luminance factor and saturation of each of the pixels of the image frame.

Abstract: A method for color grading input video data for display on a target display comprises obtaining target display metadata indicative of a capability of the target display, obtaining input video data metadata indicative of image characteristics of the input video data, automatically determining initial values for parameters of a parameterized sigmoidal transfer function, at least one of the initial values based at least in part on at least one of the target display metadata and the input video data metadata and mapping the input video data to color-graded video data according to the parameterized transfer function specified using the initial values.

Abstract: This invention discloses an image pickup device and an image synthesis method thereof The image pickup device comprises an image-pickup module, an image-synthesis module, a database and a processing module. The image-pickup module captures a plurality of temporary images of a scene. The image-synthesis module extracts a part of each temporary image and combines the parts to form a panorama temporary image, and splits the panorama temporary image into a plurality of zone-areas according to at least one threshold value and a panorama luminosity histogram. The database stores a lookup table for recording a plurality of exposure values. The plurality of the exposure values correspond to luminance values of the zone-areas respectively. The processing module obtains the plurality of exposure values corresponding to the luminance values and obtains a weighting-exposure value by an equation, and controls the image-pickup module to capture the panorama image according to the weighting-exposure value.

Abstract: A system, method and medium correcting a display image. The system includes a parameter calculation module to calculate a plurality of parameters required for a transform of a first image, based on a plurality of characteristic differences between the first image and a second image, into which the first image is to be transformed to visually match the second image, a first characteristic transform module to transform a first characteristic of the first image using the plurality of calculated parameters, the transformation resulting in an unrelated change to a second characteristic of the first image, and a second characteristic restoration module to restore the second characteristic changed by the transforming of the first characteristic.

Abstract: There is provided a delta-sigma A/D converter including a first integrator, a second integrator located on an output side of the first integrator, a quantizer located on an output side of the second integrator, and a first current D/A converter receiving an output of the quantizer and providing a negative feedback signal to an input side of the quantizer.

Abstract: Systems and methods are provided for upscaling a digital image. A digital image to be upscaled is accessed, where the digital image comprises a plurality of pixel values. A first half pixel value is computed for a first point in the digital image based on a plurality of pixel values of the digital image surrounding the first point and an activity level. A second half pixel value is computed for a second point in the digital image, and an interpolated pixel of an upscaled version of the digital image is determined using a plurality of the pixel values, the first half pixel value, and the second half pixel value.

Abstract: A method and system for communicating text descriptive data has a receiving device that receives a data signal having text description data corresponding to a description of a video signal. A text-to-speech converter associated with the receiving device converts the text description data to a first audio signal. A display device in communication with the text-to-speech converter converts the first audio signal associated with the receiving device to an audible signal.

Abstract: A device for image processing includes: a video signal receiver, for receiving at least one video signal; a color engine, comprising a local adjusting unit, for dividing pixels of an image frame of the at least one video signal into multiple pixel groups according to luminance factors of the pixels in HSI color space and adjusting the luminance factors of a specific pixel group of the pixel groups having luminance factors in a predetermined range that is a part of a full range of luminance factor by moving the pixels of the specific pixel group from a region to another region of the HSI color space without changing color axes of the HSI color space.

Abstract: In an embodiment, a system generates multiple video streams. The system includes a color grading device and an appearance mapping device. The appearance mapping device operates on the data generated by the color grading device, and both the output of the color grading device and the output of the appearance mapping device may be displayed (and edited) simultaneously. In this manner, the efficiency of the editing process is improved.

Abstract: A display device and a color adjustment method thereof and a method for displaying video signals are provided. The display device includes a video signal receiver, a scaling engine, a color engine, an output stage, and a panel. The video signal receiver receives the video signals. The scaling engine is coupled to the video signal receiver to modulate the resolution of the video signal. The color engine is coupled to the scaling engine, which includes a local adjusting unit. The local adjusting unit adjusts hue, saturation, or intensity of a group of pixels, and thereby increase the quality of images. The output stage is coupled to the color engine, which outputs the adjusted video signals. The panel is coupled to the output stage, which displays the adjusted video signal.

Abstract: In one embodiment, an image decoding system for a YCbCr formatted signal includes a color space converter capable of representing an RGB image signal with one or two negative image signal components. The image decoding system further includes a degamma correction unit and an image signal formatter. An offset of the image black level from zero corresponding to the image signal offset produced by the color space converter is employed to perform degamma correction. In a further embodiment, gain, offset, and sign are removed from the image signal produced by the color space converter prior to degamma correction. The image signal formatter may utilize a one-dimensional and a three-dimensional lookup table to produce an image signal that may include secondary and white image components. The system advantageously accommodates decoding xvYCC-encoded image data in conventional as well as new hardware display system architectures.

Abstract: High-Definition Multimedia Interface Specification, Version 1.2, supports multiple video formats. Currently the HDMI sources and sinks support multiple formats through reconfiguration of the system. The present invention describes the use of a configurable ‘n’בn’ data pixel mapping matrix for video format conversion. This mapping matrix allows the mapping of any existing video format to any other existing or future video format and allows flexibility of connectivity to any transmitter or receiver. Accordingly a more user friendly implementation that provides greater flexibility for development and use of new formats in video applications is shown.

Abstract: In an embodiment, a system generates multiple video streams. The system includes a color grading device and an appearance mapping device. The appearance mapping device operates on the data generated by the color grading device, and both the output of the color grading device and the output of the appearance mapping device may be displayed (and edited) simultaneously. In this manner, the efficiency of the editing process is improved.

Abstract: There is disclosed a digital content creation system including: a representative color obtaining section that obtains, from a digital content input, a characteristic amount of at least one representative color for the digital content input, the digital content input including a plurality of digital content sets and coloration information indicative of coloration for the plurality of digital content sets included in the digital content input; a coloration process determination section that determines coloration processing in accordance with the characteristic amount obtained by the representative color obtaining section; and a coloration processing section that changes the coloration information for the digital content sets included in the digital content input, in accordance with the coloration processing determined by the coloration process determination section.

Abstract: The object of the present invention is to provide a color correction process designed for enabling all the hues in the image properly corrected without leaving any uncorrected range; the inputted image data represented by the combination of 3 color signals is divided into a plurality of ranges by the hue so that color correction can be made by the range of each hue; in the color correction processing circuit by each hue, in order for the peripheral area of the range set for color correction to be prevented from being left uncorrected, the color correction process is designed so that correction ranges peripherally overlap with one another.

Abstract: A chromaticity diagram is divided into a plurality of sections by a primary color line and a complementary color line of a color that does not cause hue turn, then it is decided to which section a color signal being output from an imaging device belongs, and then a color correcting operation is performed for the color signal every section. Accordingly, it is not needed to detect the flesh color itself when the hue turn of the flesh color is corrected by the color correcting operation. Any flesh color can be decided easily according to whether or not the color signal being output from the imaging device has entered into the section including the flesh color. Therefore, the appropriate color correcting operation can be applied to the flesh color.

Abstract: A filter circuit is provided which has a filtered input and an unfiltered input. The filtered input passes through delay elements to coefficient circuitry. The unfiltered input passes to the coefficient circuitry without passing through the delay elements. In this manner, an unfiltered offset can be added to the filtered output. This filter is especially useful when the filtered value is in phase representation form; for example, when the filter value is a hue value encoded as a phase.

Abstract: A digital video signal processing system which includes a scaler converting a video signal having a luminance signal and chrominance signals into a digital RGB signal, further including a hue adjusting part adjusting hue represented by the chrominance signals; wherein the scaler includes an operating part operating a rotational transfer matrix rotation-transforming color coordinates of the chrominance signals according to an adjusting value inputted through the hue adjusting part. Accordingly, a digital video signal processing system and method, in which rotational transform of color coordinates is accomplished by a rotational transfer matrix prior to a color transfer matrix of a scaler without a hardware component therefor is provided.

Abstract: An apparatus and a method are provided for adjusting real time video to compensate for color blindness. A video system includes a decoder that receives and decodes a video signal into original color signals. A processor receives the original color signals and outputs color signals that are adjusted for compensating for a selected one of a number of precharacterized types of color blindness. A screen receives the adjusted color signals and displays images adjusted from the original to compensate for the selected type of color blindness. The adjusted signals are derived from the original signals by one color gamut adjustment for each type of color blindness. The color gamut adjustments are generated by characterizing at least the known, major color deficiencies, and then generating color gamut transforms to fit more range of actual color contrast within the range of perception of the color blind. Each transform is stored in a memory as a lookup table, and looked up by the processor.

Abstract: An image sensing apparatus for a microscope of this invention includes an image sensing unit for sensing an observation image obtained by a microscope and obtaining the observation image, a microscopy technique determination unit for detecting a microscopy technique in the microscope, a chromaticity determination unit for determining chromaticity of the observation image on the basis of the microscopy technique detected by said microscopy technique determination unit, and determining a region where color balance is adjusted in the observation image, and a color balance adjustment unit for adjusting color balance in accordance with a color balance adjustment amount arbitrarily set for the region of the observation image determined by said chromaticity determination unit.

Abstract: A method and apparatus for transforming color signals. The transformation is achieved by use of a first, coarse, look-up table and a second look-up table that provides coefficients to be used in calculating a correction vector. The vector of color components from the first look-up table is added to the correction vector to provide the transformed vector. The method and apparatus have particular application in the display of digital video signals.

Abstract: Hue is controlled using a saturation control circuit. A first color space value is adjusted based on a hue angle and a saturation value, and a second color space value is adjusted based on the hue angle and the saturation value. The first and second color space values are processed to obtain a hue-adjusted color space value.

Abstract: A method and apparatus for controlling tint in a digital color display system capable of efficiently performing tint control of displayed colors. The tint control method is executed according to the following: (1) when the maximum and the minimum among R, G, B are the maximum gray scale value and the minimum gray scale value respectively, a step of transforming the input color into a color of a different tint based on a use defined maximum transformation value and a transformation direction; (2) when the maximum and the minimum among R, G, B are Dmax and Dmin respectively, a step of transforming the input color into a color of a different tint based on a smaller transformation value and the same transformation direction; and (3) when all values R, G, B are equal, a step of not transforming the input color in accordance with any input set value.

Abstract: A digital video signal processing system which includes a scaler converting a video signal having a luminance signal and chrominance signals into a digital RGB signal, further including a hue adjusting part adjusting hue represented by the chrominance signals; wherein the scaler includes an operating part operating a rotational transfer matrix rotation-transforming color coordinates of the chrominance signals according to an adjusting value inputted through the hue adjusting part. Accordingly, a digital video signal processing system and method, in which rotational transform of color coordinates is accomplished by a rotational transfer matrix prior to a color transfer matrix of a scaler without a hardware component therefor is provided.

Abstract: In a hue adjustment circuit for adjustment of a color difference signal by addition, subtraction, and multiplication of hue correction components (sin &agr;, cos &agr;) generated from a sub-carrier signal and a color difference signal (R—Y, B—Y), the hue correction components (sin &agr;, cos &agr;) are derived from a chroma signal processing circuit in a TV set by using a switch to select between the chroma signal and a phase-shifted sub-carrier.

Abstract: A color modification system and method for reducing the number of computations performed on a pixel color. This reduction in computations increases the rate at which color modification may be performed and decreases the effects of rounding errors. Decreasing the effects of rounding errors produces a more accurate color modification, thereby reducing the likelihood of artifacts. The system and method performs color modification on a pixel color, where the color includes a first, second, and third component and each component defines a value of the color. The system includes a chroma lookup table having a plurality of entries. Each entry corresponds to a luma value and contains chroma coefficients. The chroma coefficients define color modifications to be applied to the components of the color. If a luma value is received, the chroma lookup table generates output chroma coefficients at an output.

Abstract: Image systems and methods adjust hue angles of one or more colors in an image. The adjusted image may be output to a printer for printing. An image quality control is provided to allow a user to select one or more specific colors whose rendition is unacceptable. Each color may be tested to see if that color is outside the range of colors which can be printed accurately or acceptably on the target printer. If the selected color is outside the range of printable colors, a variety of alternatives can be offered to arrive at the best possible rendition. Otherwise, a variety of hue shifts can be offered, where each hue shift alters the rendition of only those colors having hue angles that are near the offensive color.

Abstract: An object of the invention is to provide a hue adjusting device and a hue adjusting method that adjust finely the hue of a color image signal. The CPU calculates an off set matrix B that is in a pair with an off set matrix A to a central matrix X when the matrix X and the off set matrix A are inputted from an operating part. Then the CPU carries out the following operation when a parameter a is inputted from the operating part. X′=(a·A+(1−a)B)/2 It is possible to execute matrix conversion to adjust the hue by setting a matrix coefficient of each component of the matrix X′ the multiplication circuits.

Abstract: A chrominance signal processing apparatus in a video signal processing system which has a simple configuration capable of achieving chrominance signal control and RGB transform functions using a single circuit.

Abstract: A procamp to color transforms component digital video data. The procamp includes a digital multiplier coupled to receive component digital video data corresponding to at least two different pixel parameters. The digital multiplier is configured to selectively multiply the component video data for different pixel parameters by different factors.

Abstract: In a video signal character converting device, a sampling window signal generator generates a signal for sampling an input video signal “a”. A video scene amplitude discrimination circuit samples the video signal in response to the sampling signal, detects a change in image level either field by field or frame by frame based on an integrated value for every duration of vertical scanning, and outputs a resetting pulse when the change in picture level exceeds a predetermined level. A video scene periodicity discrimination circuit measures a time interval between two successive resetting pulses, and outputs a control signal if the time interval is shorter than a predetermined period. A video scene conversion circuit converts a video scene in response to the control signal.

Abstract: A device corrects the chrominance parameters transmitted by a chrominance subcarrier of a television signal, by shifting the phase of two demodulation signals an angle, which depends upon the phase of the chrominance subcarrier. The demodulation signals are obtained from a phase-locked loop including a resistive and capacitive network having two outputs that differ by 90° with respect to each other. The device may include circuitry for individually shifting the phase of each signal provided by the RC network by adding to each signal a fraction of the other signal provided by the RC network. The fractional coefficients may be opposite to each other and depend upon the phase of the chrominance subcarrier.

Abstract: The invention features furnishing a representation of the quadrature amplitude modulation of two input signals (e.g., U and V video signals) based on the phase of a reference signal (e.g., a color burst reference signal). The two input signals are scaled based on the phase of the reference signal, and the scaling is synchronized to the phase of the reference signal.

Abstract: A method of color correcting digital video data 21 is disclosed, comprising the steps of providing a workstation 22 connected to a source 20 of digital video data, analysing video data at the workstation 22 and making decisions relating to color corrections to be applied to the video data 21, generating color correction parameter data corresponding to the decisions, transmitting the video data and the corresponding color correction parameter data 23 to a remote color processor 28 for applying color corrections to the digital video data 26, applying color corrections to the digital video data in accordance with the correction parameter data, and returning the color corrected video data 27 from the color processor 28.

Abstract: A tone correction apparatus corrects the tone of an input color image signal independently of each of a plurality of hue areas divided by a plurality of standard axes passing through a plurality of standard colors set on a hue coordinate system. The tone correction apparatus judges whether the hue of an input color image signal belongs to which one of first and second auxiliary hue areas, the first and second auxiliary hue areas being one of the plurality of hue areas divided by an auxiliary standard axis of an auxiliary standard color, and if the hue of the input color image signal is judged to belong to one of the first and second auxiliary hue areas, independently performs tone correction of the input color image signal with respect to color components along one standard axis of the plurality of standard axes surrounding the one auxiliary hue area to which the hue of the input color image signal belongs and along the auxiliary standard axis.

Abstract: A color signal processing circuit of a camera DSP chip for use with a CCD includes a matrix circuit for converting color signals from the CCD into R-G and B-G signals, a hue/gain controlling circuit for multiplying the R-G signal by a R-hue coefficient and a R-gain coefficient and multiplying the B-G signal by a B-hue coefficient and a B-gain coefficient to form B-Y and R-Y signals by adding the R-G and B-G signals respectively multiplied by respective hue and gain coefficients, a zoom-processing circuit for zoom-processing the B-Y and R-Y signals converted in the hue/gain controlling circuit in a zoom mode, and a frequency converting circuit for synchronizing the B-Y and R-Y signals from the hue/gain controlling circuit or zoom-processed in the zoom-processing circuit with a clock having the frequency four times as large as a color burst signal to provide synchronized signals while loading the color burst signals.

Abstract: A digital converter controllably modifies input video data representing pixel luminance and color information, in two color space formats. Two color space converters are coupled in cascade. Serial video data is converted to parallel and demultiplexed. A first color space converter converts 4:2:2 sampled YCbCr luminance and color difference input data to RGB red/green/blue format. A second color space converter changes the data back to YCbCr before remultiplexing at the output. Under operator control from front panel inputs, a controller varies the conversion coefficients at the input-side color space converter, including by trigonometric functions applied to the coefficients to provide controllable hue phase shifting, modifies the transfer function in RGB color space by adjusting data in the lookup tables, and applies maximum/minimum clipping levels.

Abstract: A data converting device for converting data by employing a plurality of LUTs stored in a single memory device. The device generates, with reference to two or more LUTs sequentially, a converted output data corresponding to input data and converting level selected by each LUT. The data converting device has a single memory device for storing two or more LUTs corresponding to the number of data converting modes by block units, each block including a plurality of sub-LUTs corresponding to the number of converting levels defined in each corresponding converting mode.

Abstract: This invention is related to a video signal color correction device. Color information signal inputs are received in rectangular form. A coordinates conversion means converts the inputs into polar coordinates using one of the inputs as a polar axis. The device has a correction data storing means in which are stored luminance signal correction data dependent on a luminance signal and the polar coordinates and color information signal correction data. The correction data storing means outputs the luminance signal correction data and the color information signal correction data in accordance with the luminance signal and the polar coordinates. A correction means corrects the luminance signal and the polar coordinates on the basis of the luminance signal correction data and the color information signal correction data output from the correction data storing means.

Abstract: A system (14') for processing pixel video data having a selectable number of bits is provided. The system (14') comprises first, second and third video processors (20), (22) and (24). The first video processor (20) receives and processes pixel data of a luminance video signal. The second video processor (22) may receive and process pixel data of a chrominance video signal and may generate one of first, second and third video signal outputs. The third video processor (24) may process the chrominance video signal and may also generate at least two of the output video signals.

Abstract: A system for processing information in an image originated on a first medium into data representative of a modified image simulating an image originated on a selected second medium.

Abstract: The color modification system receives standard red, green and blue signal values and outputs modified red, green and blue values in accordance with operator modification of the signals. To increase processing speed and minimize the amount of required memory while also maintaining high resolution, the system converts the input red, green and blue signals to two-component hue and saturation values for modification using look-up tables. Once the hue and saturation levels of the signals are modified, red, green and blue output signals are reconstructed using the modified hue and saturation values, as well as a calculated brightness value. In this manner, modification of three-component primary-color signals is achieved by manipulating only two-component hue and saturation values. The system also allows modification of the brightness level of each component of the video signal in accordance with operator control. Novel methods for the determination of hue and saturation are disclosed.

Abstract: A digital color correction system and method for correcting a color video signal representing a portion of a colored optical image by modifying the entire color space of each of the complementary colors which make up the color signal so that all objects which contain each color are modified at once. A correction means produces an output video signal having a plurality of complementary color components, each of which is related to a corresponding color component of the color video signal by a transfer function, and a modification means for independently modifying each of the transfer functions is provided. The entire color space for each color may be modified, or only selected portions of it. Thus, only objects falling within a desired range of the color space may be selectively modified.

Abstract: A reproducing circuit converts a low-band converted chrominance signal into digital signals for reproducing processing and outputs a high-band converted chrominance signal. In this reproducing circuit, the digitalized low-band chrominance signal is separated to phase data and amplitude data. The phase data is decoded, and the frequency and phase fluctuations thereof are corrected. The corrected phase data is encoded to generate a continuous wave. The generated continuous wave is multiplied by the amplitude data to obtain the high-band converted chrominance signal. Similarly, a recording circuit converts a high-band converted chrominance signal into digital signals for recording processing and outputs a low-band converted chrominance signal. In this recording circuit, the digitalized high-band chrominance signal is separated to phase data and amplitude data. The phase data is decoded, and the frequency and phase fluctuations thereof are corrected.

Abstract: In a composite video system having a digitized composite video signal to be modified, wherein the digitized video signal has discrete values having sampling frequency Nf.sub.s where N is an integer greater than one, and f.sub.s is the color subcarrier frequency of the video input signal, a method and apparatus for utilizing look-up tables to create special color effects without decoding to luminance and chrominance, the method having the steps of storing in memory N sets of predetermined values such that the sets are addressable in a desired predetermined order and such that the predetermined values relate to a discrete equal distant points on a color subcarrier frequency wave corresponding to a desired color, retrieving from memory the stored values at a rate Nf.sub.s such that the N sets are addressed in the predetermined order, and using the digitized composite video signal to address said memory, to produce a digitized video output signal with different values, as desired.

Abstract: In a composite video system having a digitized composite video signal to be modified, wherein the digitized video signal has discrete values having sampling frequency Nf.sub.s where N is an integer greater than one, and f.sub.s is the color subcarrier frequency of the video input signal, a method and apparatus for utilizing look-up tables to create special color effects without decoding to luminance and chrominance, the method having the steps of storing in memory N sets of predetermined values such that the sets are addressable in a desired predetermined order and such that the predetermined values relate to a discrete equal distant points on a color subcarrier frequency wave corresponding to a desired color, retrieving from memory the stored values at a rate Nf.sub.s such that the N sets are addressed in the predetermined order, and using the digitized composite video signal to address said memory, to produce a digitized video output signal with different values, as desired.

Abstract: A data converting device for converting data by employing a plurality of LUTs stored in a single memory device. The device generates, with reference to two or more LUTs sequentially, a converted output data corresponding to input data and converting level selected by each LUT. The data converting device has a single memory device for storing two or more LUTs corresponding to the number of data converting modes by block units, each block including a plurality of sub-LUTs corresponding to the number of converting levels defined in each corresponding converting mode.