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| Number | Title | Issue Date |
| 8139155 | Self-adaptive image processing device and method A dynamic motion degree of a video composite signal is estimated. A chrominance signal after Y/C separation and chrominance demodulation is narrow-band low pass filtered (NBLPF) and wide-band low pass filtered (WBLPF), so as to generate a narrow-band filtered signal... | 03/20/2012 |
| 7990474 | Image correction circuit, image correction method and image display An image correction circuit capable of easily achieving adaptive color correction on the basis of a luminance correction amount is provided. An image correction circuit includes: a luminance correction section for performing luminance correction on input image data;... | 08/02/2011 |
| 7561209 | Image enhancement unit and method for image quality improvement of a video stream An image enhancement unit and method for enhancing the image quality of a video stream is presented. The image enhancement unit combines a contour enhancement unit, a luminance contrast stretching unit, a color transient improvement unit, and a color saturation cont... | 07/14/2009 |
| 7450183 | Method and apparatus for compensating for luminance of color signal 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 ra... | 11/11/2008 |
| 7420623 | Image-signal processing apparatus for enhancing specific frequency component of image signal and correcting the edge of reproduced image The structure of an image-signal processing apparatus for performing gamma correction and edge enhancement of a image signal is simplified. An edge-correction-gain generation circuit generates a gain signal according to the level of a image signal that has passed th... | 09/02/2008 |
| 7404645 | Image and light source modulation for a digital display system Image processing enhances display quality by controlling both the image modulator and the light sources. The image processing system utilizes a combination of user inputs, system configuration, design information, sensor feedback, pixel modulation information... | 07/29/2008 |
| 7369181 | Method of removing noise from digital moving picture data 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 fil... | 05/06/2008 |
| 7336431 | Image reading device and image forming device A device includes a light source; a first guiding unit that guides the light from the light source to an object at prescribed incident angles including a first incident angle and a second incident angle; a signal generating unit that receives light and that generate... | 02/26/2008 |
| 7321401 | Contour emphasizing circuit A contour emphasizing circuit which comprises a contour pick-up unit 10 for picking up a contour component HE from an input luminance signal Y, a level judging unit 15 for judging the luminance level of the input luminance signal Y, a coefficient contr... | 01/22/2008 |
| 7319496 | Signal processing apparatus, image display apparatus and signal processing method There is provided a signal processing apparatus comprises an edge amount detection portion for generating a data string of luminance differences of a pair of pixels adjacent to each other or adjacent over some pixels in predetermined number of frames of a luminance ... | 01/15/2008 |
| 7289163 | Method and apparatus for adjusting color edge center in color transient improvement An improved method for color transient enhancement in an input video frame of pixels. The luminance value of a current pixel is compared to that of neighboring pixels. A correction value is determined and the chrominance value of the current pixel is “pushed” to... | 10/30/2007 |
| 7271851 | Adaptive color transient improvement A superior Color Transient Improvement technique is adaptive to the local image features, so that more natural color edge transition improvement can be accomplished. A gain control function is provided that depends on the local image feature so that different region... | 09/18/2007 |
| 7233367 | Display apparatus and control method of picture thereof An apparatus for and a method of continuously adjusting a brightness and a contrast of a video display. An analog video signal is converted to provide digital luminance (Y) signals and amplitudes of the digital Y signals are adjusted based on determining whether the... | 06/19/2007 |
| 7224406 | Digital signal processing system and method applied for chroma transition A digital signal processing system and method applied for chroma transition, wherein the method has the acts of: performing a difference process on an original chroma signal C to obtain a first difference signal C′; calculating an absolute value |C′| of the firs... | 05/29/2007 |
| 7215366 | Tone correcting circuit and hue correcting circuit There are provided hue detecting means for detecting a hue component for each pixel from a first color difference signal R−Y and a second color difference signal B−Y, and gain controlling means for controlling for each pixel a gain for arbitrarily selected one o... | 05/08/2007 |
| 7190409 | Method for displaying an image having a maximal brightness An electro-optical device and a method for displaying an image are disclosed. A clear image with a clear profile can be displayed therein by processing input image data, for example input image data of TV broadcasting received by the device. ... | 03/13/2007 |
| 7176983 | Adaptive coring for video peaking A processor for enhancing an input luminance signal including: a circuit for calculating a chroma edge value associated with the input luminance signal; a circuit for measuring a luminance gradient associated with the input luminance signal; a peaking filter for pro... | 02/13/2007 |
| 7167595 | Image processing apparatus and recording medium, and image processing apparatus The edge of an image is extracted, and edge information that includes the grade and the direction of the slope of the edge is obtained. The smoothing strength is calculated using the luminance of a pixel, and filter information is selected from the obtained edge inf... | 01/23/2007 |
| 7161636 | Vertical sharpness adjustment device and TV receiver therewith A vertical sharpness adjustment device with which a viewer of a TV receiver can choose a degree of vertical sharpness adjustment to enhance a contour of a picture in vertical direction is offered. The vertical sharpness adjustment device includes a terminal to which... | 01/09/2007 |
| 7113211 | Video signal processing circuit, viewfinder apparatus, television camera, and image monitor apparatus A video signal processing circuit, which performs contour adjustment by means of digital signal processing, is applicable to a viewfinder apparatus for a television camera and an image monitor apparatus, which can be operated both in an NTSC/PAL system and an HDTV s... | 09/26/2006 |
| 7110046 | Method for dynamically adjusting video brightness A method for dynamically adjusting video brightness performs histogram equalization on a video YUV brightness/color signal to generate an equalization brightness curve. The brightness of each pixel is compared with every pixel of the video frame before and after his... | 09/19/2006 |
| 7092020 | Resizing images captured by an electronic still camera Provide an electronic still camera using a color filter array (CFA) and a single CCD making it possible to simultaneously execute the processing for color signal interpolation and the processing for resizing. In the electronic still camera according to the present i... | 08/15/2006 |
| 7088399 | Signal processing apparatus signal processing method program and recording medium for detecting a position in a pattern corresponding to noise A dot detection section of a dot-interference detection section detects a portion where pixels are arranged as “dark-bright-dark” or “bright-dark-bright” in the horizontal direction, within a Y signal containing dot interference, separated by a YC separation... | 08/08/2006 |
| 7084906 | Reducing computation time in removing color aliasing artifacts from color digital images A method of reducing color aliasing artifacts from a color digital image having color pixels including providing luminance and chrominance signals from the color digital image; downsampling the luminance and chrominance signals; using such downsampled luminance and ... | 08/01/2006 |
| 7079190 | Technique for determining the slope of a field pixel A technique for determining the slope of a field pixel is described. According to the technique, one or more sets of diagonal field pixels are downscaled (or downsampled) before they are provided to respective edge detector circuits. By downscaling the sets of diago... | 07/18/2006 |
| 7057671 | Image and video processing with chrominance attenuation The values of the primary color space components of an image signal, such as the components of RGB video signal, are maintained within their allowed range by modifying the signal in a different color space, such as YUV space. Specifically, the U and V chrominance co... | 06/06/2006 |
| 7053942 | Imaging system and method applying transformer lens and digital image reconstruction An imaging system is provided to minimize pixel defects by capturing an image in the spatial frequency domain. An image processor receives the spatial frequency-domain image data from the imager and transforms the frequency-domain image data into spatial-domain imag... | 05/30/2006 |
| 7045977 | Vertical/horizontal amplitude controller The vertical/horizontal amplitude control device for controlling a vertical amplitude and a horizontal amplitude of an image display device for displaying a video signal includes a brightness level detector for detecting a brightness level of the video signal, a ver... | 05/16/2006 |
| 7042518 | Digitally controlled variable frequency HF emphasis circuit for use in video displays A sharpness filter processes a video signal that is to be displayed in a windowed environment. The windowed environment may contain windows that for displaying television images derived from video standards such as NTSC, PAL, and SECAM. Displaying windowed televisio... | 05/09/2006 |
| 7023487 | Deinterlacing of video sources via image feature edge detection An interlaced to progressive scan video converter which identifies object edges and directions, and calculates new pixel values based on the edge information. Source image data from a single video field is analyzed to detect object edges and the orientation of those... | 04/04/2006 |
| 6980258 | Method and circuit for emphasizing contour More natural contour emphasizing processing is performed by detecting the direction of a contour with respect to a point where horizontal and vertical contours cross and a diagonal contour point. The times of an objective pixel and all the pixels adjacent to the obj... | 12/27/2005 |
| 6961066 | Automatic color adjustment for digital images A method is provided for automatically adjusting the color of a digital image. In one aspect, an strength offset is determined to automatically remove gray from a distorted image. In an other aspect applied independently or after gray removal, scaling factors are au... | 11/01/2005 |
| 6958784 | Video signal processing apparatus using multi-conversion stages A video signal processing apparatus for processing a video signal containing first and second color difference signals so as to adjust colors of an image represented by the video signal is disclosed. The apparatus includes a plurality of gain setting sections for se... | 10/25/2005 |
| 6947097 | Process for detecting black bars in a video image A process for detecting black bands in a video image within a luminance range corresponding to low luminance values comprises the steps of: calculating, for each line situated in a location in which a black band can be expected to be found if present in said video i... | 09/20/2005 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6947098 | Video signal processing A control signal (k_lum) derived from the luminance component (Y) of a video signal is used to adaptively control a temporal noise reduction filter (10) according to the level of motion in a video image. To compress the control signal for storage in a memory ... | 09/20/2005 |
| 6932067 | Exhaust gas purifying system An exhaust gas purifying system of the present invention comprises a first catalyst which contains a noble metal and reduces hydrocarbons contained in exhaust gas, and a second catalyst which is disposed downstream of the first catalyst and contains β-zeolite. In t... | 08/23/2005 |
| 6930711 | Signal processing apparatus and method A signal process for interpolating color signals is executed. In this process, color image data output from image sensor covered by a plurality of color filters that form a predetermined matrix is interpolated, horizontal and vertical correlation levels are discrimi... | 08/16/2005 |
| 6903782 | System and method for performing segmentation-based enhancements of a video image There is disclosed an apparatus for performing segmentation-based enhancements of a video image. The apparatus comprises: 1) an input buffer for storing video frames of an incoming video signal; 2) a segmentation controller capable of segmenting a first stored frame... | 06/07/2005 |
| 6888578 | Method and system for cross-luminance reduction in multi-standard television decoders A method and system for correcting luma data and chroma data from a composite signal for a plurality of lines are disclosed. The method and system include correlating line data of the composite signal from a portion of the plurality of lines to provide a plurality o... | 05/03/2005 |
