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| Number | Title | Issue Date |
| 6915013 | Encoding method using plus and/or minus rounding of images An image coding method is utilized to provide high quality images without error accumulation. Such an image coding method comprises estimating motion vectors between an input image to be coded and a reference image; synthesizing a prediction image of the input image... | 07/05/2005 |
| 6915014 | Image processing apparatus and method An image processing apparatus in which the amount of data bits for each of plural block units is controlled to be the same for all block units, so as to facilitate location of each block unit in coded image data without necessarily decoding the entire image. Pixel i... | 07/05/2005 |
| 6915015 | Apparatus for and method for SNR scalable quad-tree bit-plane coding An apparatus for and a method of coding the bit-planes of an array of numbers. The values in the array of numbers are converted to binary. The binary values are truncated to a predetermined level of accuracy. The number of bit-planes is determined based on the large... | 07/05/2005 |
| 6912319 | Method and system for lossless wavelet decomposition, compression and decompression of data Image data is compressed by decomposing the image data into a plurality of resolutions or sized by wavelet decomposition, followed by compression of the resulting data sets. Adaptive Huffman code compression is optimized for compressing the data sets, predictive err... | 06/28/2005 |
| 6909809 | Decoding method using plus and/or minus rounding of images An image decoding method is utilized to obtain high quality images without error accumulation. Such an image decoding method comprises receiving an encoded bitstream including information of P and B frames, and executing motion compensation by synthesizing a predict... | 06/21/2005 |
| 6909524 | Image processor which can add predetermined information to an image while minimizing image-quality degradation, and methods therefor An image processor unit minimizes image-quality degradation that can be caused by the addition of predetermined information to an image and that enables the predetermined information to be added to the image so that embedded information can be accurately extracted. ... | 06/21/2005 |
| 6909807 | Compression and synthesis of two dimensional images Embodiments of the present invention provide for compressing an image matrix by partitioning the image into overlapping sub-blocks, weighting each sub-block, and performing a decomposition of the weighted sub-blocks into a weighted sum of vector outer products, such... | 06/21/2005 |
| 6909812 | Methods and apparatus for nearly lossless-concatenated block transform coding Methods and apparatus for performing near lossless-concatenated N-level constrained quantization Hadamard transform decoding are provided. Accordingly, the present invention provides a transform-based coding technique, where the coding loss introduced during repeate... | 06/21/2005 |
| 6907079 | Deblocking filter conditioned on pixel brightness An encoder, decoder, and corresponding method are disclosed for encoding pixel data as a plurality of block transform coefficients and decoding encoded block transform coefficients to provide reconstructed pixel data, the encoder and/or decoder includes a conditiona... | 06/14/2005 |
| 6906753 | Image processing unit and image processing method with simplified exposure, gain and white balance control An image processing unit is provided which can solve a problem of a conventional image processing unit in that the control for coding image data is complicated and its circuit scale is large. The image pickup apparatus picks up an image of a subject and converts it ... | 06/14/2005 |
| 6904176 | System and method for tiled multiresolution encoding/decoding and communication with lossless selective regions of interest via data reuse A method and apparatus for processing an image is described. In one embodiment, the method comprises: receiving a portion of an encoded version of a downsized image and one or more encoded residual images, decoding the portion of the encoded version of the downsized... | 06/07/2005 |
| 6904091 | Methods and apparatus for progressive transmission of subband images Images are subband transformed to create a plurality of subband images. Each subband image includes a plurality of pixels. Each pixel is represented by a plurality of bits with each bit associated to a certain quantization level. Encoding of an image requires scanni... | 06/07/2005 |
| 6904151 | Method for the estimation and recovering of general affine transform The present invention relates to the methods of estimation and recovering of general affine geometrical transformations which were applied to data, extensible to any other defined class of geometrical transformations, according to the preamble of the dependent claim... | 06/07/2005 |
| 6904174 | Simplified predictive video encoder In a video coding method, it is determined to code input video data according a technique selected from the group of: (a) intra-coding, (b) inter-coding without a residual and (c) inter-coding with a residual, wherein inter-coding codes the input video data with ref... | 06/07/2005 |
| 6904177 | Filter processing apparatus A two-dimensional wavelet transform processing apparatus, more effectively utilizing hardware resource, is realized with reduced hardware construction. For this purpose, the filter processing apparatus has a vertical DWT processor (901) for performing filter ... | 06/07/2005 |
| 6904445 | Method and device for calculating a discrete orthogonal transformation such as FFT or IFFT The invention comprises a method for calculating an orthogonal discrete transform on the basis of the DIT method in prescribed intermediate steps with the following steps: the data are read from a memory organized on page-for-page basis; the intermediate step prescr... | 06/07/2005 |
| 6904175 | Image compression using an interger reversible wavelet transform with a property of precision preservation A wavelet-based image compression system and method are presented. Compression is accomplished by performing a wavelet transformation of an input digital image. The resulting wavelet coefficients are compared to a threshold value. Coefficients falling below the thre... | 06/07/2005 |
| 6898325 | Method and apparatus for clipping coefficient values after application of each wavelet transform A method and apparatus for clipping coefficient values after application of each wavelet transform is described. In one embodiment, the method comprises applying an inverse wavelet transform to data repeatedly for a plurality of decomposition levels, and clipping, a... | 05/24/2005 |
| 6895122 | Method and system for determining DCT block boundaries The horizontal and vertical offset for the M×N DCT block boundaries are determined for a decompressed image originally produced by a DCT-based compression system, regardless of the amount of compression and/or cropping that had been applied to the image. The method... | 05/17/2005 |
| 6891644 | Image processing device and image processing method An image processing system provided with a line sensor for reading image signals in line units. First, the line sensor scans a document in a normal direction. At this time the image data obtained by the scan are subjected to image processing such as compression and ... | 05/10/2005 |
| 6888889 | Image information conversion apparatus and image information conversion method The system provides an image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I pi... | 05/03/2005 |
| 6885702 | Method for spatial synchronization of a digitally coded video image and/or for identification of the syntax of a video sequence The invention concerns a method for synchronising a video image (IM) spatial position to find the position of an initial digital coding grid (GI), by said image (IM) coding blocks, characterised in that it consists in the following steps: a) moving along the directi... | 04/26/2005 |
| 6885774 | Coefficient computation in image compression using set partitioning in hierarchical trees An improved method is disclosed for the encoding phase for Wavelet-based compression of digital data representing an object or image. Subband decomposition transforms the data into hierarchical tree data. Two terms are precomputed: the highest bit-plane in which any... | 04/26/2005 |
| 6885707 | Systems for MPEG subsample decoding Decimating MPEG or other video data by subsampling the output of an inverse discrete cosine transform (IDCT) module. The decimation process is useful for reducing the volume of data that must be processed to display images on a display device, particularly when the ... | 04/26/2005 |
| 6876704 | Apparatus and method for encoding and computing a discrete cosine transform using a butterfly processor An apparatus to determine a transform of a block of encoded data the block of encoded data comprising a plurality of data elements. An input register is configured to receive a predetermined quantity of data elements. At least one butterfly processor is coupled to t... | 04/05/2005 |
| 6876772 | Picture-encoding apparatus and picture-encoding method A picture-encoding apparatus provided by the present invention includes a wavelet transformation unit for carrying out wavelet transformation on an input picture to generate wavelet-transformation coefficients, a bit-plane encoding-pass-generating unit for spreading... | 04/05/2005 |
| 6873721 | Method and device for determining an angled structure in the surface of a precision machined cylindrical work piece A method for determining a helical groove structure, for example in the form of flutes, in the surface of a finely finished cylindrical workpiece, in particular the ground mating bearing surface of radial shaft sealing rings, which is characterized in that a camera ... | 03/29/2005 |
| 6870885 | Apparatus and method for decoding and computing a discrete cosine transform using a butterfly processor An apparatus to determine a transform of a block of encoded data the block of encoded data comprising a plurality of data elements. An input register is configured to receive a predetermined quantity of data elements. At least one butterfly processor is coupled to t... | 03/22/2005 |
| 6870962 | Method and apparatus for efficiently encoding chromatic images using non-orthogonal basis functions A method and apparatus for efficiently encoding images using a set of non-orthogonal basis functions, thereby allowing reduction of file size, shorter transmission time, and improved accuracy. The non-orthogonal basis functions include homogenous color basis functio... | 03/22/2005 |
| 6868187 | Image transformation method and apparatus, and storage medium Image data is separated into two components having elements arranged in a checkered pattern. A dummy setting component is obtained of the signal value occurring at the hole position of the first component, which is dummy-set corresponding to the direction of signal ... | 03/15/2005 |
| 6868124 | Method and systems for compressing a video stream with minimal loss after subsampled decoding Transcoding of a video stream to reduce the size of the video stream with little, if any, loss in video quality after subsampling. After accessing a video stream of video pictures (i.e., video frames or fields), the blocks of the video picture are each subject to ma... | 03/15/2005 |
| 6868184 | Method and apparatus for image coding and/or decoding using a position and shape map A method or apparatus for decoding an image data comprising decoding a coded map signal indicative of a position and shade of a content in a screen inputted for every block of picture signals; decoding coded orthogonal transform coefficients and an average value of ... | 03/15/2005 |
| 6862371 | Method of compressing images of arbitrarily shaped objects A method of manipulating spectral content of a block of pixels for compression includes the step of classifying each pixel within a selected block of pixels as relevant or irrelevant. A forward transform is applied to the selected block to generate a coefficient blo... | 03/01/2005 |
| 6856701 | Method and system for context-based adaptive binary arithmetic coding A method and system for image coding, wherein an image is divided into a plurality of blocks for scanning. The pixels values in the scanned block are represented by a plurality of level-run value pairs, wherein the level value is indicative of a non-zero pixel value... | 02/15/2005 |
| 6850571 | Systems and methods for MPEG subsample decoding Decimating MPEG or other video data by subsampling the output of an inverse discrete cosine transform (IDCT) module. The decimation process is useful for reducing the volume of data that must be processed to display images on a display device, particularly when the ... | 02/01/2005 |
| 6850649 | Image encoding using reordering and blocking of wavelet coefficients combined with adaptive encoding An encoder reorders quantized wavelet coefficients to cluster large and small wavelet coefficients into separate groups without requiring the use of data-dependent data structures. The coefficients are then adaptively encoded based on a run-length code which continu... | 02/01/2005 |
| 6829385 | Apparatus and method for processing images, and a computer-readable medium An image processing apparatus which performs color transformation and compression/decompression simultaneously on image data so that the number of blocks to be transformed with the color transformation can be reduced and the processing speed can be improved without ... | 12/07/2004 |
| 6816616 | Header compression for image data stream Headers of image frames are compressed. Header of a first frame is received, where the header includes a plurality of header parameters. Further, differences are determined between the header parameters and a plurality of default parameters, and non-default paramete... | 11/09/2004 |
| 6813312 | Data storage and reduction method for digital images, and a surveillance system using said method A data storage and reduction method for digital images having a chronological order involves storing a first and chronologically new image or group of images at a first image quality requiring a first amount of storage space, and processing a second image or group o... | 11/02/2004 |
| 6807310 | Transformation of image parts in different domains to obtain resultant image size different from initial image size In one example, a transform component of a system receives a first plurality of image parts in a first domain that comprise an initial size. A transform component of the system transforms the first plurality of image parts to obtain a second plurality of image parts... | 10/19/2004 |
