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| Number | Title | Issue Date |
| 7847861 | Method and apparatus for encoding video pictures, and method and apparatus for decoding video pictures The H.264 standard has introduced a new coding method for intra-coded pictures, which is named “intra prediction”. The basic idea of intra prediction is to predict a block using reconstructed neighbour pixels. Thus, only the residual information needs to be enco... | 12/07/2010 |
| 7427990 | Data replacement method and circuit for motion prediction cache A system for decoding a video bitstream and a method for replacing image data in a motion prediction cache are described. For each of the cache lines, a tag distance between pixels stored in the cache line and uncached pixels that are to be stored in the cache is ca... | 09/23/2008 |
| 7372485 | Digital camera device and methodology for distributed processing and wireless transmission of digital images A digital imaging system is described that provides techniques for reducing the amount of processing power required by a given digital camera device and for reducing the bandwidth required for transmitting image information to a target platform. The system defers an... | 05/13/2008 |
| 7359576 | Using difference kernels for image filtering Methods and apparatus, including computer program products, for filtering an image. A filter kernel is received to determine one or more filtered values for each pixel in a sequence of pixels, where adjacent pixels are separated by a characteristic distance in the i... | 04/15/2008 |
| 7359562 | Enhancing low quality videos of illuminated scenes A method enhances a low quality video. An input video Vjin is acquired of a scene under uncontrolled illumination. The input video Vjin is smoothed to produce a noise-reduced video Sj. Temporal gradients Gt... | 04/15/2008 |
| 7292730 | Two-dimensional inverse discrete cosine transforming Implementing a two-dimensional inverse discrete cosine transform function includes executing two one-dimensional inverse discrete cosine transforming functions. Each of the one-dimensional functions is controlled to operate on a matrix of coefficients in either of t... | 11/06/2007 |
| 7280982 | System and method for a fee address system A system relating to a fee address is described. A method of directing mail to a public mailbox, determining a fee based upon the preferences of the mail recipient, receiving the fee and forwarding the mail to a private mailbox is also provided. Many different types... | 10/09/2007 |
| 7269288 | Apparatus for parallel calculation of prediction bits in a spatially predicted coded block pattern and method thereof A storage device stores rows of bits including a D0 bit, an X0 bit, an X1 bit, a Y0 bit, a Y1 bit and a spatially predicted coded block pattern having an A0 bit, an A1 bit, an A2 bit, and an A3 bit. A fi... | 09/11/2007 |
| 7262796 | Processing of color signals in a color camera A method for processing analog color signals includes analog preprocessing sensor output signals to obtain analog preprocessed signals that cause a reduced amount of digital quantizatlon errors; converting the analog preprocessed signals into digital signals; recons... | 08/28/2007 |
| 7224747 | Generating coefficients for a prediction filter in an encoder A transmitter is disclosed for transmitting a transmission signal via a transmission medium. The transmitter derives a prediction signal from the digital information signal in dependence on an array of prediction filter coefficients. The array of prediction filler c... | 05/29/2007 |
| 7221707 | Image processing apparatus employing hierarchical encoding When image data to be encoded is divided into image data items in a plurality of hierarchies and an image data item in a given hierarchy among the divided image data items in the plurality of hierarchies is to be encoded as an intra picture, an image encoding appara... | 05/22/2007 |
| 7215832 | Retrieval system and image processing apparatus The retrieval system includes a storage device for storing compressed image data of the image of interest and a retrieval device for retrieving the image while the compressed image data is in a compressed state, and preferably further includes a compression device f... | 05/08/2007 |
| 7084837 | Digital image output apparatus, digital image decoding device, and digital image encoding device The digital image output apparatus comprises a digital image decoder (1a) for decoding encoded digital image data and outputting image data update information (V2); an image data transfer area control unit (7) for determining a portion of... | 08/01/2006 |
| 7062102 | Apparatus for re-coding an image signal An apparatus for re-coding an image signal, which conducts re-coding processing using a decoded image signal subjected to coding processing as an input image signal, includes: a DCT unit for subjecting the input image signal to a discrete cosine transform (DCT); a D... | 06/13/2006 |
| 7023919 | Method for coding motion vector using 2-dimensional minimum bitrate predicting technique A method for coding a motion vector using a 2-dimensional minimum bitrate predicting technique is disclosed. A mode information (MODE) commonly adopted to the factors ‘X’ and ‘Y’ are transmitted to thereby reduce its transmission burden by using the two-dime... | 04/04/2006 |
| 7015962 | Integrated color interpolation and color space conversion algorithm from 8-bit Bayer pattern RGB color space to 12-bit YCrCb color space An integrated color interpolation and color space conversion technique and apparatus. A raw image that is arranged in a Bayer pattern where each pixel has only one of the color components needed to form a full color resolution pixel may be converted using this techn... | 03/21/2006 |
| 7006698 | Method and apparatus for compressing a video image An apparatus and method for performing two-pass real time video compression is provided. Tactical decisions such as encoding and quantification values are determined in software, whereas functional execution steps are performed in hardware. By appropriately apportio... | 02/28/2006 |
| 6983016 | Method for detecting errors in video information A method for detecting errors in an image signal. The image signal is produced by dividing an image into image blocks, and coding is performed in which at least predictive coding is performed on an image block to produce inter-coded image information for the image b... | 01/03/2006 |
| 6977961 | Method and apparatus for macroblock DC and AC coefficient prediction for video coding Existing video data compression algorithms exploit the fact that the DCT coefficients in the neighbouring blocks are sometimes similar to those in the current block. This means that if the blocks contain completely different coefficients, for coding video data is di... | 12/20/2005 |
| 6968119 | Electronic camera with compression An electronic camera includes a CCD imager. When a motion image recording mode is selected, the depression of a shutter button creates a plurality of screens of image signals based on camera signals outputted from the CCD imager. A system controller calculates an op... | 11/22/2005 |
| 6968005 | Video coding A method of encoding a video signal representing a sequence of pictures, the method employing both non-temporal prediction and temporal prediction, wherein the method comprises, for each picture that forms a reference picture for the temporal prediction of another p... | 11/22/2005 |
| 6954502 | Method for encoding and decoding video information, a motion compensated video encoder and a corresponding decoder A method for encoding video information is presented, where a piece of current video information is segmented into macroblocks and a certain number of available macroblock segmentations for segmenting a macroblock into blocks is defined. Furthermore, for each availa... | 10/11/2005 |
| 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 |
| 6934339 | Decoding method and apparatus and recording method and apparatus for moving picture data A method and apparatus for recording moving picture data encoded using a prediction encoding system, in which the playback control information is recorded along with moving picture data encoded using the MPEG system. The playback control information includes the inf... | 08/23/2005 |
| 6931062 | Decoding system and method for proper interpolation for motion compensation The present invention can complement and benefit virtually any method utilizing motion compensation to decode an inputted digital video data stream by determining a likely local nature of reference frame data area in the video data stream and then applying proper in... | 08/16/2005 |
| 6928186 | Semantic downscaling and cropping (SEDOC) of digital images A compressed-domain-based algorithm reduces a source image to a given target size using a combination of downscaling, cropping, and region-of-interest identification. The source image is partitioned into a plurality of macroblocks, each macroblock containing a plura... | 08/09/2005 |
| 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 |
| 6920176 | Image decoding device and image decoding method After completion of a prediction process for a single line in an image of size S, the DC components and AC components, held in a lower stage part of a predicted luminance value storage are copied into a line part. This copying is done to use the DC components and AC... | 07/19/2005 |
| 6920177 | Method and apparatus for accomplishing multiple description coding for video A method and apparatus for utilizing temporal prediction and motion compensated prediction to accomplish multiple description video coding is disclosed. An encoder receives a sequence of video frames and divides each frame into non-overlapping macroblocks. Each macr... | 07/19/2005 |
| 6912253 | Method and apparatus for transcoding coded video image data A transcoding apparatus converts first coded data obtained from a plurality of frames forming a video image by means of a coding algorithms including an interframe prediction coding algorithm with motion compensation into second coded data having a different structu... | 06/28/2005 |
| 6907069 | Picture coding apparatus, picture coding method, and recording medium having picture coding program recorded thereon A plurality of picture frames is arranged as one group according to correlation between picture frames in a picture sequence. Then, a coding mode corresponding to each of the picture frames of the group is determined. Subsequently, preceding is performed according t... | 06/14/2005 |
| 6903666 | Video scramble/descramble apparatus A video scramble apparatus has a scrambler for scrambling an input video signal, and a video encoder for performing interframe predictive coding of the video signal after scrambling, and the scrambler selects a frame, which is not used as a reference frame for inter... | 06/07/2005 |
| 6873737 | Image encoding system, image decoding system and methods therefor A system and method are provided for realizing high speed and high efficiency in compression of image data having periodicity. The present invention includes the following: an image input unit to input image signal; a first predictive converter which converts relati... | 03/29/2005 |
| 6853683 | Regularized dequantizer for DCT-based transform coding A new dequantization scheme for DCT-based transform coding, such as JPEG, MPEG and H.26x, is disclosed. The new approach drastically reduces blocking artifacts without smoothing the decoded image. Most discrete cosine transform (DCT) based video coding suffers from ... | 02/08/2005 |
| 6847686 | Video encoding device Video encoding device including a video input processor, for receiving said video signal, a global controller, for controlling the global operation of the video encoding device, a motion estimation processor, a digital signal processor and a bit-stream processor, wh... | 01/25/2005 |
| 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 |
| 6812864 | Video scramble/descramble apparatus A video scramble apparatus has a scrambler for scrambling an input video signal, and a video encoder for performing interframe predictive coding of the video signal after scrambling, and the scrambler selects a frame, which is not used as a reference frame for inter... | 11/02/2004 |
| 6724819 | Moving picture transmission apparatus, moving picture reception apparatus, and moving picture data record medium In a moving picture data structure having a structure comprising I pictures (intraframe coded image) and P pictures (interframe forward predictive coded image), a P′ picture of a forward predictive coded image of a picture immediately preceding an I picture and th... | 04/20/2004 |
| 6671376 | Video scramble/descramble apparatus A video scramble apparatus has a scrambler for scrambling an input video signal, and a video encoder for performing interframe predictive coding of the video signal after scrambling, and the scrambler selects a frame, which is not used as a reference fram... | 12/30/2003 |
| 6625319 | Image compression using content-based image similarity A method for compressing a set of images that includes the steps of grouping the images into at least two clusters based on color content similarity, identifying at least one representative image in each of the clusters, all other images within each of th... | 09/23/2003 |
