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| Number | Title | Issue Date |
| 7409097 | Video encoding using variable bit rates A system and method is provided for variable bit rate encoding using a complexity ratio. Quantization parameter is calculated using a complexity ratio, which is equal to a local complexity divided by a global complexity. Complex pictures are allocated a larger bit b... | 08/05/2008 |
| 7373001 | Compressed moving image decompression device and image display device using the same A moving image compression (or encoding) device including: a hardware processing section which compresses moving image data by hardware; a data storage section which stores the moving image data processed by the hardware processing section; and a software processing... | 05/13/2008 |
| 7356189 | Moving image compression device and imaging device using the same A moving image compression (or encoding) device including: a hardware processing section which compresses moving image data by hardware; a data storage section which stores the moving image data processed by the hardware processing section; and a software processing... | 04/08/2008 |
| 7352373 | Systems and methods for multi-dimensional dither structure creation and application Embodiments of the present invention comprise systems and methods for creation, modification and implementation of dither pattern structures. ... | 04/01/2008 |
| 7336838 | Pixel-data selection device to provide motion compensation, and a method thereof A pixel-data selection device providing motion compensation, and a method thereof. A first and a second storage parts store a current frame/field including first pixel-data and a previous frame/field including second pixel-data, respectively, corresponding to at lea... | 02/26/2008 |
| 7327892 | JPEG2000 encoder The image quality value of the code block currently processed is monitored, and when it falls below a threshold, encoding of the code block is terminated (in other words, encoding in the subsequent passes is omitted for the code block) to shift to encoding of the ne... | 02/05/2008 |
| 7194138 | Reduced-error processing of transformed digital data This invention solves problems due to employing error degraded data in digital processing. It particularly solves multi-generation problems wherein transform data degrade during each inverse transform and forward transform cycle even without any processing due to th... | 03/20/2007 |
| 7103226 | Video processor with composite graphics and video picture elements A video processor integrates the processing of video and graphics data by restructuring the discrete blocks of luminance and chrominance component data associated with video image data (Y,U,V) into composite pixel values (YUYV), and performing the subsequent process... | 09/05/2006 |
| 6996178 | Look ahead motion compensation Efficient methods for performing motion compensation are described. The methods are particularly useful during motion compensation based decoding and recoding. In one aspect, the look ahead motion compensation methods obtain motion vector information for a macrobloc... | 02/07/2006 |
| 6993076 | Apparatus and method for deriving an enhanced decoded reduced-resolution video signal from a coded high-definition video signal An improved image processing system involves decoding compressed image data including frequency domain coefficients defining blocks of pixel values representing an image at a first resolution to provide an image at a reduced second resolution for display from a sele... | 01/31/2006 |
| 6975809 | Method and apparatus for passing clear DVD data in a computer The system is for passing clear DVD program streams from a CPU (central processing unit) to an MPEG-2 decoder. In the system the CPU is connected to a first bus interface. A system memory is connected to the first bus interface via a memory bus. A second bus interfa... | 12/13/2005 |
| 6970579 | Orientation invariant feature detection system and method for unstructured low-quality video A system and method for detecting features in video from business meetings and video teleconferencing systems can use color, motion, morphological (shape) filtering and a set of heuristic rules to determine possible features in the scene. One embodiment includes obt... | 11/29/2005 |
| 6956971 | Terminal and method for transporting still picture Terminal and method for transporting a still picture uses a moving picture terminal after extraction of a frame unit of still pictures, for example, from a moving picture. The extracted still picture frames can be encoded in a fixed quantizing value and stored befor... | 10/18/2005 |
| 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 |
| 6937657 | Motion video signal encoder and encoding method A motion video signal encoder maximizes image quality without exceeding transmission bandwidth available to carry the encoded motion video signal by comparing encoded frames of the motion video signal to a desired size of frame. If the size of encoded frames differ ... | 08/30/2005 |
| 6930689 | Hardware extensions for image and video processing A processing device (200) includes three hardware extensions: a motion estimation extension 202, a pixel interpolation extension 204 and a DCT/iDCT extension 206. The hardware extensions perform functions which would otherwise be highly p... | 08/16/2005 |
| 6925122 | Method for video-based nose location tracking and hands-free computer input devices based thereon A method for tracking the location of the tip of the nose with a video camera, and a hands-free computer input device based thereon have been described. According to this invention, a convex shape such as the shape of the tip of the nose, is a robust object suitable... | 08/02/2005 |
| 6925124 | Unit for and method of motion estimation and image processing apparatus provided with such motion estimation unit The motion estimation unit (100) comprises a block-matcher (102) for calculating a start motion vector (110) by minimizing a predetermined cost function as a matching criterion for the block (116) of pixels with a further block of pixels ... | 08/02/2005 |
| 6876703 | Method and apparatus for video coding A video coding method progressively refines a predicted motion vector to obtain an estimated motion vector. Subsequent steps are omitted if the estimated motion vector matches a current macroblock. Variable matching thresholds can permit dynamic adjustment of image ... | 04/05/2005 |
| 6876702 | Motion vector detection with local motion estimator A method and apparatus of encoding digital video, for example according to the ISO/IEC MPEG standards (ISO/IEC 11172-2 MPEG-1 and ISO/IEC 13818-2 MPEG-2), which employs a local motion estimator for determining respective local motion vectors for groups of adjacent m... | 04/05/2005 |
| 6873395 | Motion picture analyzing system An addition image generation module 10 sequentially timewise adds images (input images) of still pictures at individual discrete time points included in a motion picture to be analyzed, thereby generating two kinds of addition images (image A and image B), re... | 03/29/2005 |
| 6870883 | Parallel encoding and decoding processor system and method Encoding and decoding systems for MPEG encoding and decoding at a high speed using a parallel processing system, wherein macroblocks to be processed are designated for first to third processors which are made to carry out all processings of encoding, variable length... | 03/22/2005 |
| 6839384 | Method and apparatus for decoding compressed video signals The top field of a coded picture is exclusively decoded. If the decoded field is structured as field picture and the top field of a reference picture is referenced, decoded motion vectors are used to perform a motion compensation. If the nonexistent bottom field of ... | 01/04/2005 |
| 6816617 | Motion vector searcher and motion vector search method as well as moving picture coding apparatus The invention provides a motion vector searcher which includes an inter-block difference arithmetic operation section for calculating and outputting difference amounts between an original image MB and a plurality of search MBs, an additional amount arithmetic operat... | 11/09/2004 |
| 6804303 | Apparatus and method for increasing definition of digital television An apparatus and method for improving picture quality of a digital television is disclosed in which a picture image motion adaptive interpolation process is used when an interlaced picture is converted to a progressive picture, thereby providing optimal picture qual... | 10/12/2004 |
| 6757433 | Object-based quad-tree mesh motion compensation method using greedy algorithm An object-based quad-tree mesh motion compensation method using the Greedy algorithm is provided. This method defines an object-based quad-tree mesh structure defined by extending a hierarchical grid interpolation technique, by which complicated or partial motion is... | 06/29/2004 |
| 6658161 | Signal-processing method and device therefore A signal-processing method for performing a coordinate transformation operation and a quantization operation on an input data to obtain quantization outputs, and a signal-processing device therefor. A search strategy based on the characteristic of the inp... | 12/02/2003 |
| 6513162 | Dynamic video communication evaluation equipment In a dynamic video communication evaluation equipment for analyzing codes by multiple methods for evaluating a dynamic video image, an analysis including estimation is performed to fix a reliability of the analysis result, enabling a processing terminatio... | 01/28/2003 |
| 6480629 | Motion estimation method using orthogonal-sum block matching A method for determining a best match between a first pixel array in a picture currently being encoded and a plurality of second pixel arrays in a search region of a reference picture, wherein each of the first and second pixel arrays includes a plurality... | 11/12/2002 |
| 6249612 | Device and method for image coding The invention relates to a device and method for image coding. A reference frame memory for storing image data of a reference frame, a search memory for storing image data of a search frame, a motion detection means for reading image data from the referen... | 06/19/2001 |
| 5990958 | Apparatus and method for MPEG video decompression A novel apparatus and method is disclosed to decode an encoded MPEG video stream in an efficient manner making optimal use of available system memory and computational resources. The present invention partitions the MPEG video decode task into software ta... | 11/23/1999 |
| 5734431 | Video coding and decoding apparatus including corresponding nonlinear compression and expansion of a motion compensation error signal A video coding apparatus includes a motion compensation circuit for motion-compensating a picture signal in a frame previous to a frame of video signals input for each frame, and generating a motion compensation picture signal, a nonlinear processing circ... | 03/31/1998 |
| 5619267 | Video decoder including a control unit A video decoder including a control unit (CC), a picture memory (P) and a loop filter (F) for blockwise decoding of coded video pictures (q). The blockwise decoding generally leads to artefacts in the display of the decoded video pictures on a monitor (M)... | 04/08/1997 |
| 5619595 | Apparatus for detecting motion vector included in image information A motion vector detection method detects a motion vector of an input image by using two image information which are different each other in time base. The method comprises a step of correcting at least one of the two image information on the basis of two ... | 04/08/1997 |
| 5604821 | Structure and method for dynamic scene analysis Circuit architecture for dynamic scene analysis uses a difference picture based technique wherein pixel values corresponding to the same position from previous and current frames are inputted to the system during each clock cycle. The difference picture i... | 02/18/1997 |
| 5559551 | Subject tracking apparatus A subject tracking apparatus in which the target is tracked further stably by effectively eliminating the erroneous judgment due to the effects from the object which resembles the target, the luminance change, and objects having different shapes. Each of ... | 09/24/1996 |
| 5412430 | Image coding method and image coding apparatus In high efficiency coding of a motion image signal in transmission or recording of the motion image signal, plural prediction signals are determined by independently compensating a motion of reproduction signals of plural frames positioned before a frame ... | 05/02/1995 |
| 5396292 | Encoding apparatus for motion video signals A subtracter (20) supplies a prediction error signal (21), derived from a prediction signal (101) and an input motion video signal (1). A quantizer (30) quantizes the prediction error signal to generate a quantized prediction error signal (31). A reproduc... | 03/07/1995 |
| 5379076 | Video motion compensation circuit A video motion compensation circuit comprising a Y phase variation compensation section for inputting a macro slice address signal and a motion vector Y signal and compensating for a variation in a phase of the motion vector Y signal and a X phase variati... | 01/03/1995 |
| 5280530 | Method and apparatus for tracking a moving object A method of tracking a moving object in a scene, for example the face of a person in videophone applications, comprises forming an initial template of the face, extracting a mask outlining the face, dividing the template into a plurality (for example sixt... | 01/18/1994 |
