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| Number | Title | Issue Date |
| 8111934 | Extension of two-dimensional variable length coding for image compression A method and an apparatus to encode a series of quantized coefficients of a transform of a block of image data. The transform is such that 0 is the most likely coefficient amplitude and 1 is the next most likely coefficient amplitude. The method includes forming sym... | 02/07/2012 |
| 8094955 | Image reducing apparatus and reduced image generating method In a case where a padded orthogonally transformed block obtained by orthogonally transforming a padded image block of 8×8 pixels to which padding data has been added has been recorded as compressed image data, the padded orthogonally transformed block is subjected ... | 01/10/2012 |
| 8086056 | Encoding device and method, decoding device and method, and program Described herein are methods and devices for encoding and decoding data. An encoding device can be configured to encode video by performing intra-frame encoding using wavelet transformation. The encoding device can include a generation unit configured to generate a ... | 12/27/2011 |
| 8081830 | Enhancement of digital images Processing of at least one digital image includes performing first and second separable block transforms in first and second directions; modifying results of the second block transforms; and performing first and second separable inverse block transforms in the first... | 12/20/2011 |
| 8059902 | Spatial sparsity induced temporal prediction for video compression A method and apparatus are disclosed herein for spatial sparsity induced temporal prediction. In one embodiment, the method comprises: performing motion compensation to generate a first motion compensated prediction using a first block from a previously coded frame;... | 11/15/2011 |
| 8045815 | Image encoding apparatus and image encoding method An image capturing apparatus 100 first executes JPEG encoding on RAW data. On the basis of the compression ratio of JPEG image data obtained, the image capturing apparatus 100 selects a Huffman table to encode the RAW data. With the higher compression ... | 10/25/2011 |
| 8041135 | Image encoding apparatus and control method thereof An apparatus and method encodes into block units an image in which halftone images and character and/or line images are mixed, and makes a substitution value, substituting for pixels in which pixels of a character and/or line image exist, a value whereby the occurre... | 10/18/2011 |
| 8036478 | Color image residue transformation and/or inverse transformation method and apparatus, and color image encoding and/or decoding method and apparatus using the same A color image residue transform and/or inverse transform method and apparatus, and a color image encoding and/or decoding method and apparatus using the same are provided. The residue transform method includes: obtaining a residue corresponding to the difference of ... | 10/11/2011 |
| 8031960 | Wavelet transformation device and method, wavelet inverse transformation device and method, program, and recording medium Wavelet transformation is performed at a plurality of levels as to image signals. A first buffer stores, independently for each of the levels, a part of coefficients from results of analysis filtering in a horizontal direction of the image signals. A second buffer s... | 10/04/2011 |
| 8027547 | Method and computer program product for compressing and decompressing imagery data Techniques are provided for compressing and decompressing image data which may reduce the distortion that may otherwise be created by the compression of data values representative of null posts, overlays or other features that differ from the underlying image. In co... | 09/27/2011 |
| 8000548 | Wavelet transformation device and method, wavelet inverse transformation device and method, program, and recording medium for performing wavelet transformation at a plurality of division levels A wavelet transformation device for performing wavelet transformation at a plurality of division levels as to image signals. A horizontal filtering unit subjects the image signals to horizontal direction lowband analysis filtering and highband analysis filtering. Bu... | 08/16/2011 |
| 7995849 | Method and apparatus for improving video quality of low bit-rate video Embodiments describe a method, apparatus and system for processing images using block based compression. In one embodiment, a method comprises determining whether two blocks are neighboring blocks, determining whether the two neighboring blocks are both subdivided, ... | 08/09/2011 |
| 7925107 | Adaptive variable block transform system, medium, and method A variable block transform system, medium, and a system, medium, and method for video encoding/decoding using the variable block transform. The system includes a transform block size determination unit that determines the transform block size for components of an in... | 04/12/2011 |
| 7925108 | Encoding device and dynamic image recording system having the encoding device To always maintain good image quality no matter whether the target bit rate for encoding is high or low. An encoder 210 includes: a converting section 103 for converting picture data representing a moving picture into a coefficient including a p... | 04/12/2011 |
| 7903895 | Data transformation device for image processing A data transformation device including a pre-processing unit, a calculating unit and a post-processing unit is disclosed. The pre-processing unit performs a first pre-process with received image data to generate pre-processed image data, and performs a second pre-pr... | 03/08/2011 |
| 7899263 | Method and apparatus for processing analytical-form compression noise in images with known statistics Embodiments of the invention provide methods to calculate compression noise statistics of decompressed images in transform coding. They can be used in compressed image quality assessment, compression algorithm optimization, compression noise reduction, and other qua... | 03/01/2011 |
| 7873227 | Device and method for processing at least two input values For the reduction of the rounding error, a first and a second non-integer input value are provided and combined, for example by addition, in non-integer state to obtain a non-integer result value which is rounded and added to a third input value. Thus, the rounding ... | 01/18/2011 |
| 7853093 | System, medium, and method encoding/decoding a color image using inter-color-component prediction A color image encoding and/or decoding system, medium, and method using inter-color-component prediction in a frequency domain. To encode an original image, including at least two or more image components, frequency domain transform may be performed with of each com... | 12/14/2010 |
| 7809205 | Image processing method, image processing apparatus, image forming apparatus and recording medium An image processing apparatus in which image data is transformed to spatial frequencies to obtain multiple frequency components, the obtained frequency components are processed, the processed frequency components are inversely transformed to image data, and the numb... | 10/05/2010 |
| 7756350 | Lossless encoding and decoding of digital data The disclosure relates to encoding and decoding of digital data, and in particular to lossless arithmetic encoding and decoding of digital data representing audio, image or video data. A probability density function used for lossless arithmetic encoding of digital d... | 07/13/2010 |
| 7747097 | Method for simple hardware implementation of JPEG size limiter A size limiter module used to limit a file size of an encoded file is disclosed. The size limiter module includes a size limiter set-up calculator and a size limiter processing engine. The size limiter calculator is configured to identify a maximum bit size for a se... | 06/29/2010 |
| 7742649 | Method and system for image compression using image symmetry An image compression system and method is described, which makes use of the symmetry found in faces and heads to perform the compression. The image is divided along the line of symmetry, and pairs of corresponding pixels on the two divided sides are determined. A we... | 06/22/2010 |
| 7724975 | Design techniques and their circuit designs for versatile and scalable video coding Design techniques and their circuit designs for versatile and scalable video coding are proposed, in which the inner product operation in the transform coding expression is taken apart into a series of add and shift operations, and the expression is partitioned into... | 05/25/2010 |
| 7724976 | 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... | 05/25/2010 |
| 7720298 | Method for processing a digital image and image representation format An image representation format for representing a digital image comprises: image information stored as a bitstream representing sequential image blocks, each block comprising one or more components, each component comprising one or more data units and each data unit... | 05/18/2010 |
| 7689052 | Multimedia signal processing using fixed-point approximations of linear transforms Close approximations of ideal linear transforms, such as the forward and inverse discrete cosine transformation (DCT), are formed with minimum complexity using fixed-point arithmetic. The transformation is decomposed into a smaller set of transformations (e.g., the ... | 03/30/2010 |
| 7680350 | Method and system for progressive mesh storage and reconstruction using wavelet-encoded height fields Systems and methods are provided for progressive mesh storage and reconstruction using wavelet-encoded height fields. A method for progressive mesh storage includes reading raster height field data, and processing the raster height field data with a discrete wavelet... | 03/16/2010 |
| 7634148 | Image signal transforming and inverse-transforming method and computer program product with pre-encoding filtering features An aspect of an image signal transforming method is a method of generating one or more transformed samples from a plurality of input samples, which includes a first transformed sample generating step of performing a first filtering process by a filter, on at least o... | 12/15/2009 |
| 7593584 | Encoding device, encoding method, and program An encoding device has a shape encoding unit and a pattern encoding unit. The shape encoding unit encodes a shape of an image element. The pattern encoding unit encodes a binary pattern of the image element and the shape of the image element is related to the binary... | 09/22/2009 |
| 7567721 | Digital watermarking of low bit rate video Methods for embedding digital watermarks in compressed video include perceptual adapting a digital watermark in predicted and non-predicted data based on block activity derived from the compressed video stream, embedding in predicted objects in a video stream having... | 07/28/2009 |
| 7567722 | Dynamically scaled file encoding A dynamically scaled file encoding method and apparatus are disclosed. A file encoding system using JPEG encoding can be configured to produce relatively constant compressed file sizes irrespective of the initial file size and file contents. The system retrieves an ... | 07/28/2009 |
| 7551789 | Reversible overlap operator for efficient lossless data compression An efficient lapped transform is realized using pre- and post-filters (or reversible overlap operators) that are structured of unit determinant component matrices. The pre- and post-filters are realized as a succession of planar rotational transforms and unit determ... | 06/23/2009 |
| 7526136 | Faster transforms using early aborts and precision refinements Fast transforms that use early aborts and precision refinements are disclosed. When to perform a corrective action is detected based upon testing the incremental calculations of transform coefficients. Corrective action is then performed. The corrective action inclu... | 04/28/2009 |
| 7489826 | Compensating for errors in performance sensitive transformations The invention provides a method, a data analyzing system, an apparatus, and article of manufacture which reduce the error in transform equations in which constants are replaced by approximations. This is achieved by factoring an adjustment factor into the calculatio... | 02/10/2009 |
| 7477796 | Method for preparing compressed image data file, image data compression device, and photographic device A method for carrying out a step of extracting a portion of a predetermined size from the image data, and a step of preparing a predetermined number of compressed partial data compressed with different compression parameter values by repeating preparation of compres... | 01/13/2009 |
| 7463782 | Data encoding with an amplitude model and path between the data and corresponding decoding A method of encoding a set of data representing physical quantities includes forming a path between the samples of the set, the path passing a maximum of once via each sample location. For two given successive sample locations of the path, the method includes the st... | 12/09/2008 |
| 7444029 | Image predictive coding method An image predictive coding apparatus and method, image predictive decoding apparatus and method, and recording medium for performing an image predictive coding method or the image predictive decoding method, of which the transform efficiency is remarkably improved i... | 10/28/2008 |
| 7444032 | Demodulation and phase estimation of two-dimensional patterns A method (100) of demodulating a real two-dimensional pattern (110) is disclosed. The method (100) estimates (120, 130) a quadrature two-dimensional pattern from the real two-dimensional pattern (110) using a smooth phase only tran... | 10/28/2008 |
| 7440501 | Method and apparatus for controlling loop filtering or post filtering in block based motion compensationed video coding Adjacent blocks are identified in an image. Coding parameters for the adjacent blocks are identified. Deblock filtering between the identified adjacent blocks is skipped if the coding parameters for the identified adjacent blocks are similar and not skipped if the c... | 10/21/2008 |
| 7437008 | Image predictive coding method An image predictive coding apparatus and method, image predictive decoding apparatus and method, and recording medium, of which the transform efficiency is remarkably improved in comparison with the prior art. According to the image predictive coding apparatus and m... | 10/14/2008 |
