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| Number | Title | Issue Date |
| 7978268 | Apparatus for digitally filtering a video signal, and related method A method for digitally filtering a video signal comprises: converting the video signal into a plurality of sampled values; determining whether distribution of at least one portion of the sampled values belongs to one of a plurality of specific types according to the... | 07/12/2011 |
| 7969510 | Video processing system and method with recursive and non-recursive filtering in separate high frequency bands A video noise reducer divides a signal into spatial frequency bands and derives both recursively and non-recursively filtered signals for each band. Both signals are processed non-linearly. These signals are combined in ways that vary between the bands to provide a ... | 06/28/2011 |
| 7852412 | Video noise level detection Circuits, methods, and apparatus for measuring a video signal's noise level. The determination can be made based on pixel values for a single video image frame, for example, by comparing pixel color values, luminance, or other parameter for a first and second group ... | 12/14/2010 |
| 7782402 | Apparatus and method for temporal noise reduction and motion enhancement The present invention provides an apparatus and corresponding method for reducing temporal noise of a target frame and enhancing the motion of the target frame. The apparatus includes a storage device, a temporal noise reducing circuit, and a motion enhancing circui... | 08/24/2010 |
| 7760271 | Method and circuit for determining the noise component in a video signal A method for determining a noise component in a video signal is proposed, in which the difference between a delayed and an undelayed video signal is formed. In order to be able to measure the noise component as precisely as possible, the delayed and the undelayed vi... | 07/20/2010 |
| 7633556 | Video signal processing apparatus and method to enhance image sharpness and remove noise In a method of removing a noise signal from a video signal and enhancing edge sharpness to improve the video signal definition, a different weight is assigned depending on a characteristic of input pixels. To this end, at least two pixel blocks including the input a... | 12/15/2009 |
| 7538822 | Apparatus and method for filtering digital image signal An apparatus and method of filtering a digital image signal. The apparatus includes: a noise reduction filter which selectively outputs one of results obtained by temporally and spatially filtering pixel values of pixels of each of frames of an image as a temporal o... | 05/26/2009 |
| 7515209 | Methods of noise reduction and edge enhancement in image processing Methods of noise reduction and edge enhancement in image processing. An exemplary method comprises extracting a plurality of pixels from the video signal, evaluating measures of edge existence in a plurality of directions within the extracted pixels, determining a l... | 04/07/2009 |
| 7440037 | Anti-aliasing characters for improved display on an interlaced television monitor Anti-aliasing characters for improved display on an interlaced television monitor is described. In one implementation, an expanded character is generated by increasing a character's original dimensions. The expanded character includes multiple sub-blocks and each su... | 10/21/2008 |
| 7433538 | Image processing apparatus and control method thereof This invention provides an image processing apparatus which can effectively remove conspicuous noise contained in image data, while suppressing deterioration of image information. Image data containing noise is input from an input terminal (100). Based on the... | 10/07/2008 |
| 7430019 | Apparatus to improve image sharpness adaptively according to multi-video formats and method thereof An apparatus to improve an image sharpness and a method thereof which can improve the image sharpness of an image through an adaptive operation of the apparatus according to resolutions of input/output video signals and an emphasis of edge portions of the image. The... | 09/30/2008 |
| 7425985 | Image processing apparatus and method A dodging process which brightens a dark portion sometimes makes noise components contained in an image obtained by an image sensor conspicuous. A gray image generator extracts a luminance component Y of an image, an unsharp image generator generates an unsharp imag... | 09/16/2008 |
| 7388621 | Systems and methods for image processing providing noise reduction and edge enhancement Image processing methods and systems for noise reduction and edge enhancement. A variation detector is provided to evaluate measures of edge existence in a plurality of predetermined directions within pixels of a video signal, and determine a control signal accordin... | 06/17/2008 |
| 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 |
| 7356192 | Apparatus and method for processing an image An enhancing degree for sharpness enhancing is determined as a parameter for enhancing the sharpness of the input image by using at least one of information about a subject included in the input image and information about the display for displaying the input image.... | 04/08/2008 |
| 7352916 | Method of coding artifacts reduction A method to reduce coding artifacts within a discrete decoded picture includes a spatial and/or temporal filtering with respective filter characteristics dependent on an image quality value (Q). Preferably, the spatial filtering includes a deblocking filtering, wher... | 04/01/2008 |
| 7345711 | Video signal improving circuit A video signal improving circuit comprises an input section which receives a video signal; a delay circuit which delays the video signal to generate a plurality of delayed video signals which have delayed times different from one another; an improving signal produci... | 03/18/2008 |
| 7336318 | Synthetic insertion of clear codes during video program changes An apparatus and method for facilitating program changes. The apparatus and method include a controller for detecting a change program request and for outputting change event data when a change event is detected. A non-active video information replacement module is ... | 02/26/2008 |
| 7324701 | Image noise reduction An image processing apparatus determines whether or not a target pixel TP which is the object of the smoothing process is an edge-forming pixel based on the edge level (gradient g). If the pixel is determined to be an edge-forming pixel, the smoothing process employ... | 01/29/2008 |
| 7319494 | System and method for reducing noise in images A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patter... | 01/15/2008 |
| 7310370 | Multi-layer video compression system with synthetic high frequencies Multi-layered motion or still video compression includes, in an encoder or encoding function aspect of the invention, separating the video signal into low-frequency and high-frequency components, processing the low-frequency components of the video signal to generat... | 12/18/2007 |
| 7307657 | Video signal processing method and device for processing luminance signal In a video signal processing method of processing a luminance signal of a video signal generated by causing a CCD to receive light transmitted through color filters, a control signal yf1 is generated by calculating Cy/Y using a complementary color signal Cy a... | 12/11/2007 |
| 7286183 | Device for generating a video image sharpness improvement signal A device for producing a video image sharpness improvement signal (DOC21-DOC22), with black level clipping of an associated video signal, comprises a differential transconductance stage processing the video signal and whose bias currents (Imax) are dir... | 10/23/2007 |
| 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 |
| 7265791 | Method and apparatus for de-interlacing video signal A three-dimensional de-interlacing method and apparatus for converting an interlaced scan format image into a progressive scan format image by performing low pass filtering on respective predetermined pixels of a current frame and a previous frame and determining pi... | 09/04/2007 |
| 7254278 | Digital image processing method The present invention relates to a method of post-processing a digital image (Im) comprising pixels, said digital image being encoded and decoded according to a technique of coding by blocks of pixels. Said method comprises a classification step (6) intended ... | 08/07/2007 |
| 7236643 | System and method for filtering and binarization of images in the presence of specular noise In order to render information contained in images more detectable in the presence of noise, the present invention discloses a system and method to binarize the images in the presence of noise. The method of this invention comprises the steps of applying a dynamic r... | 06/26/2007 |
| 7227541 | Image display apparatus and method of determining characteristic of conversion circuitry of an image display apparatus An image display apparatus has an image display including scanning lines, modulation lines and display devices driven through the scanning lines and modulation lines, a scanning circuit for supplying a scanning signal to the scanning line, a modulating circuit for s... | 06/05/2007 |
| 7228002 | Inverse halftoning process Performing inverse halftoning on a halftoned image includes smoothing the halftoned image using a two-dimensional filter to produce a smoothed image, detecting edge areas in the smoothed image, performing lowpass filtering on non-edge areas of the smoothed image, an... | 06/05/2007 |
| 7221404 | Video signal processing method and device To enable a satisfactory suppression of overemphasized component after converting the number of scanning lines of video signal, when the video signal is converted in the number of scanning lines and a high-frequency component at least in a vertical direction of the ... | 05/22/2007 |
| 7218316 | Image signal processing apparatus and method and image display apparatus and method To provide a bright, high-image-quality image display apparatus, in an overlap scanning mode in which two scan-wiring lines are selected simultaneously in each horizontal scanning period, high-frequency emphasis filtering is performed on a video signal so that a gai... | 05/15/2007 |
| 7215823 | Deblocking and deringing apparatus, program and method An image processor is provided which simplifies filter processing and increases the speed when an image is decoded, and is suitable for realizing effective screen effect. In deblocking filter processing, as to a pixel array intersecting a boundary between adj... | 05/08/2007 |
| 7212657 | Method and system for enhancing portrait image that are processed in a batch mode A batch processing method for enhancing an appearance of a face located in a digital image, where the image is one of a large number of images that are being processed through a batch process, comprises the steps of: (a) providing a script file that identifies one o... | 05/01/2007 |
| 7212675 | Method of finding orphan blocks in block based image compression schemes A method of processing the contents of an image which are digitized and formatted into macro blocks (MB) of information. The method involves flagging for further use those macro blocks whose contents satisfy a first criteria. Further processing of the method is perf... | 05/01/2007 |
| 7206453 | Dynamic filtering for lossy compression An encoder dynamically filters information for lossy compression so as to control bitrate or quality with few sudden, dramatic changes to perceptual quality of the compressed information. For example, a video encoder regulates the level of a buffer (e.g., how full o... | 04/17/2007 |
| 7206016 | Filtering artifacts from multi-threaded video There is provided herein a system for reducing artifacts associated with multi-threaded video coding. The system generates a virtual thread from the multi-threaded data. The virtual thread combines the multi-thread data with estimates of virtual thread data in a man... | 04/17/2007 |
| 7206027 | Spatial resolution of video images The invention relates to a method and a device to increase the resolution of an image by interpolating along edges of the image. Edges are detected and their direction is calculated (10). The interpolation (12) of new pixels is carried out along the di... | 04/17/2007 |
| 7187788 | Method and system for enhancing portrait images that are processed in a batch mode A batch processing method for enhancing an appearance of a face located in a digital image, where the image is one of a large number of images that are being processed through a batch process, comprises the steps of: (a) providing a script file that identifies one o... | 03/06/2007 |
| 7184578 | Method and system for enhancing portrait images that are processed in a batch mode A batch processing method for enhancing an appearance of a face located in a digital image, where the image is one of a large number of images that are being processed through a batch process, comprises the steps of: (a) providing a script file that identifies one o... | 02/27/2007 |
| 7180636 | Image processor and method The present invention relates to an image processor provided in apparatuses such as digital copiers and printers, and that distinguishes between a character edge region and a continuous tone region of an original image and switches the tone reproduction processing b... | 02/20/2007 |
