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| Number | Title | Issue Date |
| 7382923 | Method and device for processing and decoding a coded digital signal The present invention concerns a method of processing a coded digital signal containing on the one hand a set of samples of different types obtained by coding a set of original samples representing physical quantities and on the other hand a set of information repre... | 06/03/2008 |
| 7254267 | Encoder for volume data A volume data encoder with high encoding efficiency is provided. The object of the coding is volume data which contains a plurality of tomogram planes output from a CT and an MRI. A header analysis unit separates each plane image into header information and pixel in... | 08/07/2007 |
| 7228000 | Image data generation with reduced amount of processing An image data generator for generating data on a size reduced image of an original image. In one embodiment, the image data generator includes: an inverse wavelet transform unit to perform on inverse wavelet transform on wavelet coefficients; and a coefficient selec... | 06/05/2007 |
| 7120305 | Adaptive nonlinear image enlargement using wavelet transform coefficients A method and apparatus for enlargement and resolution enhancement of images in the wavelet domain is described. In one embodiment, the method comprises receiving a wavelet representation of an image, where the wavelet representation comprises wavelet coefficients, a... | 10/10/2006 |
| 7031535 | Image processing apparatus capable of interpolating error data This invention provides an image processing apparatus which receives an image signal divided into a plurality of different subband components, detects an error in low-frequency subband component data within the image signal of one picture, and interpolates remaining... | 04/18/2006 |
| 6999673 | Moving picture decoding method, moving picture decoding apparatus and program recording medium A moving picture decoding apparatus is provided which reduces the deterioration in image quality due to errors by a concealment processing for decoded image data, thereby improving the image quality of decoded images, without causing high deterioration in image qual... | 02/14/2006 |
| 6980597 | Fine granularity scalability using bit plane coding of transform coefficients A system for efficient bit plane coding of transform coefficient data, such as DCT data used in a video coding system. Decimal values for the transform coefficients are converted to binary values, where each bit occupies a corresponding bit plane, from the most sign... | 12/27/2005 |
| 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 |
| 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 |
| 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 |
| 6888891 | Wavelet domain half-pixel motion compensation A wavelet domain half-pixel motion compensation process that reduces aliasing effects that down sampling causes in the wavelet transform uses an H-transform and provides motion estimation and compensation in wavelet domain without requiring an inverse wavelet transf... | 05/03/2005 |
| 6804457 | Digital video signal recorder/reproducer and transmitter When recording/reproducing a digital video signal having 1080 effective lines, an MPEG stream can be extracted on the reproducing side with a simple structure and without causing serious deterioration of the image quality, and without wastefully consuming the capaci... | 10/12/2004 |
| 6788811 | Coding apparatus, decoding apparatus, coding method, decoding method, amd computer-readable recording medium for executing the methods A coding apparatus which can simplify a coding circuit and also simplify the processing of quantization. Image data that consists of R-, G-, and B-color components read from a scanner into buffers is subjected to transformation using a position correlation for each ... | 09/07/2004 |
| 6778709 | Embedded block coding with optimized truncation A multi-layer embedded bitstream is generated from a subband decomposition by partitioning each subband of the decomposition into a plurality of blocks; and encoding the blocks of each subband. The blocks of each subband are coded independently of each other. Result... | 08/17/2004 |
| 6768518 | Method and apparatus for removing a checkerboard-like noise artifact from a captured composite NTSC video frame A wavelet domain filtering technique is disclosed that removes or at least minimizes checkerboard-like noise artifacts that result from capturing a composite NTSC video signal. A Haar basis filter bank is used to obtain a two-level wavelet decomposition. Low-pass fi... | 07/27/2004 |
| 6738523 | Parallel inverse discrete wavelet transform It is, therefore, an object of the present invention to provide a structure and method of processing signals, which includes transforming a signal into subbands by applying a forward discrete wavelet transform (FDWT) to the signal, partitioning the subbands into ove... | 05/18/2004 |
| 6693961 | System and method of video frame memory reduction of video decoders Embodiments of the invention comprise a new device and method to realize an improved video frame memory reduction for a video decoder. In one embodiment, this improvement is achieved by a removal of the rate controller and the utilization of both a block ... | 02/17/2004 |
| 6661842 | Methods and apparatus for error-resilient video coding Apparatus and methods are provided for encoding an input frame of a video sequence for transmission over a channel. The method and apparatus decompose the input frame into multiple subbands and divide the multiple subbands into multiple blocks correspondi... | 12/09/2003 |
| 6556624 | 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... | 04/29/2003 |
| 6553071 | Motion compensation coding apparatus using wavelet transformation and method thereof A motion compensation coding apparatus using a wavelet transformation and a method thereof are capable of detecting a motion vector with respect to a block having a certain change or a motion in an image from a region having a hierarchical structure based... | 04/22/2003 |
| 6553147 | Apparatus and method for data partitioning to improving error resilience An apparatus and a method for partitioning data to improve error resilience. Specifically, one or more segment markers (symbols) are entropy encoded along with the bitstream (payload) into a packet.... | 04/22/2003 |
| 6411653 | Cascaded polyphase DFT-filter band for a wireless telecommunications system A technique for reducing computational and storage requirements of cascaded polyphase DFT-filter bank for receiving and transmitting telecommunications is disclosed. The cascaded polyphase DFT-filter bank is designed by specifically selecting a range of r... | 06/25/2002 |
| 6215526 | Analog video tagging and encoding system An analog video tagging and encoding system is disclosed. The invention inserts an analog tag frame into the analog video stream such that the luminance (Y) values are made to approach zero, i.e., black, allowing a potential tag frame to be quickly identi... | 04/10/2001 |
| 6154493 | Compression of color images based on a 2-dimensional discrete wavelet transform yielding a perceptually lossless image What is disclosed is a method that includes splitting raw image data into a plurality of channels including color plane difference channels, and then compressing separately each of these channels using a two-dimensional discrete wavelet transform, the com... | 11/28/2000 |
| 6125143 | Picture encoding device and method thereof, picture decoding device and method thereof, and recording medium A picture is divided into either one of three types of macroblocks and then encoded in such a manner that block distortion, mosquito noise and ringing are reduced while picture coding efficiency is improved.... | 09/26/2000 |
| 5719627 | System and method for motion compensation on sub-band represented signals of motion picture For digital signals provided with motion vectors of a plurality of regions, a conversion coefficient for a respective one of the motion vectors is determined in accordance with the respective motion vector and a shape of a corresponding one of the regions... | 02/17/1998 |
| 5657085 | Wavelet transform coding method An improved coding performance for wavelet transform coding. The method comprises: two-dimensional wavelet transforming an input picture signal to output transform coefficients; two-dimensionally arranging the transform coefficients; quantizing the arrang... | 08/12/1997 |
| 5604602 | Process and device for bite-rate reduction for the recording of images on a video recorder A method comprising breaking an image down into sub-bands, performing a pre-analysis of the image in image blocks, recursively and adaptively assigning the available bit-rate to each pixel in the sub-bands, selecting a quantizer determined by the source p... | 02/18/1997 |
| 5276525 | Two-dimensional block scanning for subband image and video coding A signal coder is disclosed with improved compression of pictorial data that has been decomposed into plural subbands through a two-dimensional quadrature-mirror decomposition (102). In each of the higher frequency bands, the decomposed samples are quanti... | 01/04/1994 |
| 5210609 | Noise reduction circuit for high definition video signal In ATV (Advanced Television) system which compresses the band of high-definition video signal by using sub-band coding method, the high frequency components of the high-definition video signal are divided into two-dimensional blocks by a maximum value det... | 05/11/1993 |
