Abstract: A system identifies a video comprising frames associated with content tags. The system detects features for each frame of the video. The system identifies, based on the detected features, scenes of the video. The system determines, for each frame for each scene, a frame score that indicates a number of content tags that match the other frames within the scene. The system selects, for each scene, a set of key frames that represent the scene based on the determined frame scores. The system receives a search query comprising a keyword. The system generates, for display, search results responsive to the search query including a dynamic preview of the video. The dynamic preview comprises an arrangement of frames of the video corresponding to each scene of the video. Each of the arrangement of frames is selected from the selected set of key frames representing the respective scene of the video.

Abstract: A display device includes: a display unit including pixels arranged in a matrix therein, each of the pixels including a first sub-pixel that displays a first color component, a second sub-pixel that displays a second color component, a third sub-pixel that displays a third color component, and a fourth sub-pixel that displays a fourth color component; and a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first, second, third, and fourth sub-pixels. The signal processing unit generates converted input signals with changed saturation among the input signals. The signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.

Abstract: System and methods are provided for performing saturation adjustment of one or more pixels. In one embodiment, an input color value of a pixel is received. The input color value includes an input saturation component. An adjusted color value is extracted from a predetermined look-up table that maps the input color value to the adjusted color value, the adjusted color value having an adjusted saturation component that is different from the input saturation component. The adjusted color value is output.

Abstract: A video decoder that separates and analyzes analog video signals includes a hue and saturation separator and a video signal determiner. The hue and saturation separator demodulates from a component video signal chroma signal, which includes a hue signal and a saturation signal. The video signal determiner determines at least one video signal characteristic of the component video signal dependent on the hue and saturation signal. The video signal determiner may include a mode determiner that determines the encoding standard of the video signal, and a color burst determiner that determines a location of a color burst signal with the video signal. The mode determiner may include a signal lock detector, a sequence matcher, and an encoding mode selector. The color burst determiner may include an absolute value determiner and a burst position determiner.

Abstract: An image processing apparatus processes an image signal from an image pickup element including a plurality of pixels for one microlens, and the image processing apparatus includes a saturation detector configured to detect whether an output value of each of the plurality of pixels reaches a saturation level, and a saturation corrector configured to correct an output value of a saturation pixel that reaches the saturation level and an output value of an adjacent pixel that shares the same microlens with the saturation pixel.

Abstract: A method of controlling a digital photographing device, the method including analyzing the color distribution of an input image, determining an enhancement color from the input image according to a predetermined criterion based on the analyzed color distribution, and enhancing the enhancement color in the input image. The predetermined criterion may be that a color distributed at a ratio higher than a predetermined ratio is determined as the enhancement color. The predetermined enhancement color may further depend on the focal length of the image.

Abstract: A signal processing device (200) included in a display which has a color reproduction range larger than that of the input device.

Abstract: In the video signal processing device, the first color space converting section performs color space conversion on an input video signal, to generate a converted video signal configured of H, S and V signals. The first high-frequency separating section separates a high-frequency component from the luminance signal in the input video signal, to generate high-frequency luminance signals. The combining section performs a combining process based on the V signal or the S signal or both, and the high-frequency luminance signal, to generate a combined V signal or a combined S signal or both. The second color space converting section performs color space conversion on a video signal, configured of the H signal, the S signal or the combined S signal, and the V signal or the combined V signal, to generate an output video signal defined in RGB color space.

Abstract: A signal processing device including: a color coordinate adjuster performing color coordinate adjustment processing for adjusting color coordinates of an image input signal according to a color reproduction range of a display device; a brightness adjuster performing brightness adjustment processing for adjusting a brightness component of the image input signal; and a coefficient controller controlling a color coordinate adjustment coefficient and a brightness adjustment coefficient. The coefficient controller controls the brightness adjustment coefficient so as to decrease the brightness component of the image input signal, when saturation of a pixel having a first hue is high, controls the brightness adjustment coefficient so as to increase the brightness component of the image input signal, when saturation of a pixel having a second hue is high, and decreases the brightness adjustment coefficient when increasing the color coordinate adjustment coefficient.

Abstract: A method and apparatus whereby a two-dimensional touchpad control for selecting color is implemented via a touch sensitive surface with a graphical attachment on its surface to select both an intensity and a color. The graphical attachment having two regions, one region being a rectangular shape to select the intensity via a Y-axis and the other being a two dimensional X/Y-axis control surface with color Hue on one axis and color Saturation on the other axis. Software running in a control device monitors touchpad regions for user inputs and converts the raw selected parameters on the touchpad into the Hue, Saturation and Intensity information, used in the preferred embodiment to control light fixture color and intensity.

Abstract: A video display apparatus generates luminance information for individual frames of a video signal from histograms of the luminance component of the video signal, and classifies the content of the video signal on the basis of this information. Color saturation information is also generated from color saturation histograms, and scene changes are detected. Video correction parameters and display control parameters are derived from the content classification and color saturation information. The video signal is corrected according to the video correction parameters, and displayed according to the display control parameters. Display characteristics suitable for the video content are thereby obtained. The parameters are changed when a scene change is detected, so that the viewer is not disturbed by the change in video display characteristics.

Abstract: The present invention discloses an image display device, comprising: a lookup table specifying a corresponding relationship between color saturation represented by gradation and set values associated with part including the minimum value of the color saturation; a first color saturation setting unit for setting color saturation associated with the set value greater than or equal to a predetermined value based on the lookup table; and a second color saturation setting unit for setting color saturation associated with the set value less than the predetermined value by calculating values which gradually decreased to the minimum value of the color saturation as the set value decreases.

Abstract: An apparatus for adjusting image color saturation and a method for adjusting a saturation level of an original image data are provided. The image color saturation apparatus includes a first color over-saturation level calculating unit, a parameter adjusting unit, a saturation adjusting unit and a second color over-saturation level calculating unit. The apparatus for adjusting image color saturation detects the number of over-saturation pixels in an input image according to a predefined over-saturation area, and the number of over-saturation pixels in an adjusted output image. Thus, the parameter adjusting unit can dynamically adjust a saturation gain to maintain the frame consistency according to the number of the over-saturation pixels.

Abstract: A device for adjusting color video signals, and in particular the color video signals produced by a film analyzer comprises a matrix for processing the color video signals to regulate the components of three basic colors into color video signals passing through the matrix. A controller controls the matrix with respect to hues which correspond to the color video signals, respectively.

Abstract: A method and an apparatus of color-space conversion are provided herein. When adjustment of saturation and/or hue is performed on a RGB color signal, pixel luminance will be influenced to some extent. In the conversion method of the present invention, luminance compensation will be performed after global or local adjustment to keep the pixel luminance from being influenced by the color-space conversion. The luminance compensation method is to adjust a compensation value according to a ratio of an adjusted pixel luminance to an original pixel luminance.

Abstract: In the video processing device, a correction amount update determining unit determines whether to update a correction amount based on an input image obtained from an image input unit and when a cut point is detected or when the number of frames in a number of frames storing unit exceeds a fixed value, determines that update is required, and at this time, a correction amount obtaining unit obtains a new correction amount based on the input image. Then, if no cut point is detected, an amount of change of a correction amount in time is limited and the obtained result is recorded in a correction amount storing unit, and an image correcting unit conducts quality improving correction processing with respect to the input image based on a correction amount recorded in the correction amount storing unit and the image corrected is sent to an image output unit.

Abstract: The invention discloses a hue dividing and judging device including a memory unit, a calculation module, and a judgment module. The memory unit is used for storing a look-up table, and the look-up table records N boundaries, wherein the N boundaries includes j+1 operative boundaries for defining j color areas. The calculation module is used for calculating the hue of each pixel of an input image. According to the look-up table, the judgment module is used for judging where the hue of each pixel falls within two of the operative boundaries, so as to judge that the hue of the pixel of the input image falls into which one of the color areas. Accordingly, if there are more operative boundaries recorded in the look-up table, the hue will be divided into more color areas, and the user will have more choices for adjusting the color of the input image.

Abstract: An image signal processing apparatus is disclosed. A peaking signal generation section extracts and amplifies high frequency components contained in an input image signal to generate a peaking signal. An operation section allows a target area for which contour correction is to be performed using the peaking signal to be accepted. A control section generates an area gate signal describing position information corresponding to the designated target area. A mask processing section performs a mask process of outputting an image signal to which the peaking signal has been added to the target area designated through the operation section based on the area gate signal supplied from the control section. A scaling processing section converts pixels of the image signal for which the mask process has been performed is converted at a predetermined scaling ratio.

Abstract: The present invention relates to a method for enhancing an image quality by saturation. The method includes the step of: determining a minimum gain value ‘SatGainMin’ and a maximum gain value ‘SatGainMax’ of a gain value ‘PGain’ of a pre-amplifier; defining a first to a third ranges based on the ‘SatGainMin’ and the ‘SatGainMax’; determining whether a currently used saturation value ‘USat’ is equal to or greater than approximately 1; determining whether the ‘PGain’ is less than the ‘SatGainMin’; performing saturation by using a value in the first range as an actual saturation value ‘ASat’ when ‘PGain’< ‘SatGainMin’; determining whether the ‘PGain’ is equal to or less than the ‘SatGainMax’; performing saturation by using a value in the second range as the ‘ASat’ when ‘SatGainMin’?‘PGain’?‘SatGainMax’; and performing saturation by using a value in the third range as the ‘ASat’ when ‘PGain’>‘SatGainMax’.

Abstract: A method and apparatus for compensating for the luminance of a color signal. The luminance compensation method includes obtaining an allowable luminance ratio of a color signal, obtaining a luminance enhancing ratio of a color signal using the allowable luminance ratio, and compensating for the luminance of the color signal using the luminance enhancing ratio. The luminance ratio is the ratio of a luminance according to saturation when a color signal is represented by four or more multiple primary colors, to a luminance according to saturation when the color signal is represented by three colors.

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 gain control circuit includes an automatic gain controller (AGC), an analog-to-digital converter (ADC), a saturation field detecting block, a sync detector and a gain control block. The AGC controls amplitude of an analog image signal including a luminance signal, a color signal and a sync signal. The ADC converts the amplitude-controlled analog image signal to a digital image signal. The saturation field detecting block determines on a per field basis whether the digital image signal is saturated. The sync detector is configured to detect the sync signal in the digital image signal. The gain control block provides a gain control signal to the AGC based on an output signal of the saturation field detecting block and an output signal of the sync detector. Therefore, the gain control circuit may prevent saturation of the analog image signal by controlling gain of the analog image signal.

Abstract: A method of color saturation compensation in a video signal is disclosed. The method includes the steps of: processing a luminance signal component of the video signal; determining whether the processing of the luminance signal results in a change in chrominance saturation; if the step of determining reveals that the chrominance saturation has changed, applying a chrominance compensation signal to the chrominance signals to counteract the effects of chrominance saturation, wherein the step of applying a compensation signal include the steps of: generating a compensation signal which is dependent on hue and luminance ratio (output luminance signal/input luminance signal). Apparatus for performing the method is also disclosed.

Abstract: A method and apparatus for selectively enhancing contrast depending on the level of incoming video signals while preserving colors are provided. An apparatus for enhancing the contrast and brightness of a video signal displayed on a display device includes: a first luminance level transformation circuit that receives luminance and chrominance signals, reduces the level of the luminance signal in response to a first control signal, and outputs the chrominance signals and the luminance signal whose level has been reduced; an image converting circuit that receives the output signals from the first luminance level transformation circuit and converts the received signals into RGB video signals; and a second luminance level transformation circuit that receives the RGB video signals from the image converting circuit, concurrently increases the respective levels of the RGB video signals in response to a second control signal, and outputs the RGB video signals whose levels have been increased.

Abstract: In a technique for video segmentation, classification and summarization based on the singular value decomposition, frames of the input video sequence are represented by vectors composed of concatenated histograms descriptive of the spatial distributions of colors within the video frames. The singular value decomposition maps these vectors into a refined feature space. In the refined feature space produced by the singular value decomposition, the invention uses a metric to measure the amount of information contained in each video shot of the input video sequence. The most static video shot is defined as an information unit, and the content value computed from this shot is used as a threshold to cluster the remaining frames. The clustered frames are displayed using a set of static keyframes or a summary video sequence. The video segmentation technique relies on the distance between the frames in the refined feature space to calculate the similarity between frames in the input video sequence.

Abstract: A method for detecting intensity saturation of a light sensor includes monitoring an electrical signal from a light sensor for detecting an intensity saturation condition of at least one pixel of the light sensor, converting the electrical signal to a digital signal, imposing a reserved bit combination on the digital signal indicating the intensity saturation condition of the pixel, and transmitting a control signal in response to the digital signal to compensate for the intensity saturation condition of the pixel.

Abstract: A method for adjusting and limiting a color saturation level S of a color pixel of an input image includes steps of: obtaining a first chrominance value U and a second chrominance value V representing the color pixel of the input image; determining the color saturation level S in dependence on the first chrominance value U and the second chrominance value V; determining a saturation limiting parameter &bgr; in dependence on the color saturation level S; obtaining an adjusted first chrominance value by multiplying the first chrominance value U by the saturation limiting parameter &bgr;; obtaining an adjusted second chrominance value by multiplying the second chrominance value by the saturation limiting parameter &bgr;; and representing a color pixel of an output image with the adjusted first and second chrominance values. The process is repeated for each pixel of each image of the input video signal.

Abstract: The present invention relates to a method for adjusting the saturation levels of the pixels of a time varying image being represented by RGB color sample vectors {right arrow over (C)} in an RGB color system. The method does not require the RGB color sample vectors {right arrow over (C)} to be converted into YUV samples in order to subsequently perform saturation adjustment.

Abstract: The present invention provides an image compositing apparatus capable of producing a natural composite image, with a simple structure and a less occupying space. The present invention also provides a method for compositing an image by providing shadow-free conditions in a limited space for chroma-keying so that a subject image and a desired background image are naturally integrated as one image.

Abstract: A method for independently controlling hue or saturation of individual colors in a real time digital video image, without affecting the hue or saturation of any other color in the same real time digital video image.

Abstract: A color saturation correction method is provided that, by means of a simple circuit configuration, can reduce dissimilarities in picture quality between images that are projected from film and images obtained from video signals, caused by over-saturation of colors in dark scenes. The luminance signal level of a video signal is detected and the saturation of colors in dark portions is then corrected by reducing the chrominance signal level depending on a luminance signal level when the luminance signal level is at or below a predetermined level. The luminance level at which adjustment starts is preferably set to 50% or lower, and the chrominance signal output gain is preferably −3 dB or greater.

Abstract: A light emitting diode (LED) driver pad comprising a multiplying digital to analog converter (MDAC), which allows for differing LED characteristics to be matched digitally. Either a plurality of MDACs are integrated onto a single integrated circuit, one MDAC per color of LED, or a single MDAC may be multiplexed to drive a plurality of different color LEDs. The MDAC allows for LED operating current to be set digitally, while allowing an overall brightness or intensity control, thus achieving uniform color balance over a range of operating characteristics.

Abstract: Red color saturation is increased and red color with higher purity can be reproduced by composing: a red color detection circuit 1 for detecting a red color signal having higher purity by inputting color differential signals (R-Y) and (B-Y) modulated by color subcarrier, subtracting the absolute value of the (B-Y) signal from the positive polarity component of the (R-Y) signal and removing the negative part of the subtracted signal; Y signal compensation block including: first gain controller 50b for controlling the output signal amplitude of red color detection circuit 1 and a subtracter 50a for subtracting the output signal of first gain controller 50b from a luminance signal Y; an (R-Y) signal compensation block including: second gain controller 51b for controlling the output signal amplitude of red color detection circuit 1 and an adder 51a for adding the output signal of second gain controller 51b and the input (R-Y) signal; and a (B-Y) signal compensation block including: third gain controller 52b for c

Abstract: Studio camera position and motion may be derived from the camera image by separating out the background and deriving from a background having a number of areas of hue and/or brightness different from adjacent areas estimates of movement from one image to the next. The initial image is used as a reference and amended with predicted motion value. The amended image is compared with incoming images and the result used to derive translation and scale change information. Once the proportion of the reference image contained in an incoming image falls below a threshold a fresh reference image is adopted.

Abstract: A color image processing apparatus is disclosed in which a color image signal is separated into lightness data and chromaticity data, and if it is decided that a block includes an edge and the lightness data and chromaticity data of the block have a strong correlation, the block is identified as one including an edge of a color line image.

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: Red color saturation is increased and red color with higher purity can be reproduced by composing: a red color detection circuit 1 for detecting a red color signal having higher purity by inputting color differential signals (R-Y) and (B-Y) modulated by color subcarrier, subtracting the absolute value of the (B-Y) signal from the positive polarity component of the (R-Y) signal and removing the negative part of the subtracted signal; Y signal compensation block including: first gain controller 50b for controlling the output signal amplitude of red color detection circuit 1 and a subtracter 50a for subtracting the output signal of first gain controller 50b from a luminance signal Y; an (R-Y) signal compensation block including: second gain controller 51b for controlling the output signal amplitude of red color detection circuit 1 and an adder 51a for adding the output signal of second gain controller 51b and the input (R-Y) signal; and a (B-Y) signal compensation block including: third gain controller 52b for c

Abstract: Studio camera position and motion may be derived from the camera image by separating out the background and deriving from a background having a number of areas of hue and/or brightness different from adjacent areas estimates of movement from one image to the next. The initial image is used as a reference and amended with predicted motion value. The amended image is compared with incoming images and the result used to derive translation and scale change information. Once the proportion of the reference image contained in an incoming image falls below a threshold a fresh reference image is adopted.