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7412003 |
Transcoders and methods
Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses...
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7408984 |
Method and system for multiple pass video coding
A real-time MPEG video coding system with information look-ahead for constant bit rate (CBR) applications, such as, for example, Video-on-Demand (VoD) over ADSL. This scheme employs two MPEG...
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7408985 |
Moving picture coding apparatus and method
A coding control section 26 determines a quantization step size 24 and frame skip control information 25 based on a remainder of a buffer 20 and a maximum quantization step size 28 output...
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7408988 |
Motion estimation engine with parallel interpolation and search hardware
A method for motion estimating. The method generally includes the steps of (A) generating a first interpolated block having a sub-pixel resolution in response to a first interpolation process...
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7408989 |
Method of video encoding using windows and system thereof
A first search window within a reference frame of video data is identified along with a first correlation threshold value for the first window. The first correlation threshold value is a value to...
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7408990 |
Efficient motion vector coding for video compression
Video coding efficiency is improved by jointly coding the x and y components of motion vectors with a single variable length code. The motion vector components for a block of pixels are predicted...
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7408992 |
Detection and repair of MPEG-2 chroma upconversion artifacts
A method for removing MPEG-2 chroma upconversion artifacts in a video stream includes detecting a presence of artifacts in an incorrectly upsampled MPEG-2 video stream and removing the presence of...
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7408488 |
Digital signal coding apparatus, digital signal decoding apparatus, digital signal arithmetic coding method and digital signal arithmetic decoding method
A digital signal coding apparatus and method makes a compression coding of a digital signal. The coding apparatus and method codes the digital signal by determining a context model to be used for...
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7409103 |
Method of reducing noise in images
An image noise reducing method that can properly reduce CCD noise which emerges in an image imported from a digital camera is provided. The method includes applying a first filtering step to...
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7408986 |
Increasing motion smoothness using frame interpolation with motion analysis
Techniques and tools for video frame interpolation and motion analysis are described. The techniques and tools may be implemented separately or in combination in software and/or hardware devices...
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7409075 |
Image processing apparatus and method, program, and recording medium
In each of frames of specified image data, a covered background area or an uncovered background area is detected. In an image in the first frame, a user inputs the contour of an object in the...
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7408991 |
Error detection in low bit-rate video transmission
A method for decoding video data blocks using variable length codes, comprising transforming information about the spatial frequency distribution of a video data block into pixel values. Prior to...
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7409702 |
Auxiliary program association table
A method of identifying programs in a digital video communication system, consistent with certain embodiment of the present invention involve generating an auxiliary program association table (PAT)...
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7409098 |
Image processing apparatus and method for coding with complexity-based quantization
An image processing apparatus is provided that can define the change amount of a quantizing parameter by suitably reflecting the complexity of image data in the case, when the quantizing parameter...
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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...
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7408987 |
Method of motion estimation for transmission cost reduction of motion vectors
The method includes segmentation of the video image into image blocks, movement estimation per image block in order to obtain a field of movement vectors. It is characterized in that it includes a...
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7406123 |
Visual complexity measure for playing videos adaptively
A method plays frames of a video adaptively according to a visual complexity of the video. First a spatial frequency of pixel within frames of the video is measured, as well as a temporal velocity...
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7405752 |
Mobile communication system, mobile communication terminal and program thereof for displaying video at desired positions
In a mobile communication terminal 10 , a position information assigning section 24 associates images acquired by the photographing section 20 with position information concerning the...
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7406125 |
Method for initialization of per tone frequency domain equalizer (FEQ) through noise reduction for multi-tone based modems
An improved per-tone FEQ method with a noise reduction technique using periodic training pilot tones increases the throughput for long-reached modems. This method can reduce the noise effects in...
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7406124 |
Systems and methods for allocating bits to macroblocks within a picture depending on the motion activity of macroblocks as calculated by an L1 norm of the residual signals of the macroblocks
The invention is related to methods and apparatus that can advantageously be used in a video encoder to improve picture quality, to improve the speed of encoding, and the like. One embodiment of...
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7406703 |
Apparatus and method for injecting synchronized stream data in digital broadcasting environment
An apparatus and method for injecting synchronized stream data into a Motion Picture Experts Group 2 (MPEG-2) video/audio transport stream for a digital data broadcasting service. The apparatus and...
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7406647 |
Systems and methods for forward error correction in a wireless communication network
A forward error correction encoder encodes input data words into code words that comprise a parity matrix. In one aspect, the encoder is optimized based on the properties of the parity matrix in...
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7403835 |
Device and method for programming an industrial robot
In a device and method for programming an industrial robot using a simulation program, control commands are issued by a handheld programming device and these commands are visualized on an image...
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7403660 |
Encoding picture arrangement parameter in picture bitstream
Encoded pictures comprise one or more independently decodable frames, reference frames, and predicted frames. In the method an arrangement step is performed for arranging the pictures in an...
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7403565 |
Region-based information compaction as for digital images
A method and apparatus for preserving the dynamic range of a relatively high dynamic range information stream, illustratively a high resolution video signal, subjected to a relatively low dynamic...
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7403561 |
Fixed bit rate, intraframe compression and decompression of video
High quality intraframe-only compression of video can be achieved using rate distortion optimization and without resizing or bit depth modification. The compression process involves transforming...
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7403563 |
Image decoding method and apparatus, and television receiver utilizing the same
A variable-length decoding (VLD) unit performs a variable-length decoding on an MPEG video stream. An inverse quantization (IQ) unit computes a discrete-cosine-transform (DCT) coefficient by...
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7403562 |
Model based rate control for predictive video encoder
A rate control algorithm for a predictive video encoder is provided to accurately control the coding rate while requiring a small complexity. The algorithm assumes the video encoder to consist of...
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7403564 |
System and method for multiple channel video transcoding
A system and a method for manipulating video data received over a media channels is disclosed herein. The method includes using an index table to reference stored video data, including motion...
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7403566 |
System, computer program product, and method for transmitting compressed screen images from one computer to another or many computers
A computer system transmits images of its display screen over a low bandwidth line. The computer system operates under a display control system, where screen paint or equivalent messages are used...
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7400681 |
Low-complexity motion vector prediction for video codec with two lists of reference pictures
A method of motion vector prediction for use in differential motion vector coding within a block motion-compensation-based video coder. The video coder employs a generalized multiple reference...
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7400685 |
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...
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7400896 |
Apparatus and method for estimating a signal power to interference power ratio in a wireless communication system
A transmission and reception apparatus and method for use in a wireless communication system, and an apparatus and method for adaptively transmit and receive a signal according to channel state in...
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7400682 |
Systems and methods for reduced bit-depth processing in video-related data with frequency weighting matrices
Embodiments of the present invention comprise systems and methods for processing of data related to video wherein reduced bit depth intermediate calculations are enabled.
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7400683 |
Device with virtual tilized image memory
A device generally having a memory manager and a direct memory access unit. The memory manager may be configured to (i) map a first picture from a video signal among a plurality of picture segments...
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7400772 |
Spatial compression algorithm for the analysis of very large multivariate images
A method for spatially compressing data sets enables the efficient analysis of very large multivariate images. The spatial compression algorithms use a wavelet transformation to map an image into a...
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7400678 |
Methods in transmission and searching of video information
In a method for transmission of video information between HTTP servers and clients in a shared network resource, particularly Internet, the video information is stored as a video file consisting of...
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7400652 |
MPEG-2 decoding system and method
In an MPEG-2 decoding system, a transport decoder decodes a transport packet corresponding to a Program Identification (PID) from an input transport stream, and retrieves a Program Association...
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7400684 |
Video coding
A method of encoding a video signal representing a sequence of pictures, the method comprising comparing a first picture with a second picture, calculating a measure of the similarity between the...
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7400680 |
Rectangular-shape motion search
A method for rectangular-shape motion search has been disclosed. One embodiment of the method includes performing motion measurement on a plurality of motion search points, the plurality of motion...
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7397856 |
Method and apparatus for storing and processing picture information of temporally successive pictures
A method and apparatus are provided for storing and processing picture information of temporally successive pictures wherein in each case at least one picture area is selected from each temporally...
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7397850 |
Reciprocal index lookup for BTSC compatible coefficients
An algorithm calculates spectral compression/expansion filter coefficients using a value proportional to a reciprocal of a feedback/feedforward signal and stores the coefficients to a lookup table....
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7397858 |
Maintaining a plurality of codebooks related to a video signal
A method of enhancing picture quality of a video signal is disclosed. The method comprises the steps of receiving an encoded video signal having a plurality of headers; maintaining a plurality of...
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7397852 |
Image processing apparatus and method, and image processing program
Picture data is compressed and encoded in consideration of visual characteristics of human beings against colors. A color of pixels is detected corresponding to color difference components Cb and...
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7397283 |
Digital A/V transmission PHY signaling format conversion, multiplexing, and de-multiplexing
A circuit includes a configurable receiver circuit, a multiplexer or demultiplexer coupled to the configurable receiver circuit, and a configurable driver circuit coupled to the multiplexer or...
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7397857 |
Method for transformation-coding full motion image sequences
In the case of a method for transformation encoding of moving-image sequences, motion vectors are estimated block-by-block, with which said motion vectors a motion compensation is carried out. The...
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7397963 |
Method and apparatus for storing bitplanes of coefficients in a reduced size memory
A method and apparatus for storing bitplanes of coefficients in a reduced size memory is disclosed. In one embodiment, a method for encoding coefficients comprises applying one or more wavelet...
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7397851 |
Separate plane compression
A method of distinguishing between regions of an image, separating and masking the original image into multiple image planes, and compressing each separated image plane with a compression method...
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7397957 |
Discrete wavelet transform unit and method for adaptively encoding still image based on energy of each block
Disclosed is a discrete wavelet transform (DWT) unit for encoding and decoding still images based on the energy of each block. The DWT unit includes an energy calculating section for calculating...
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7397855 |
Rate controlling method and apparatus for use in a transcoder
A rate controlling method for computing a reference quantization parameter is provided, for use in a transcoder having a variable length decoder, an inverse quantizer, a quantizer and a variable...
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