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7529301 |
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...
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7526025 |
Lifting-based implementations of orthonormal spatio-temporal transformations
A method and apparatus for encoding video frames is described. In one embodiment, an encoding method includes jointly transforming a set of pixels into high-pass data using an orthonormal...
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7526028 |
Motion estimation method and apparatus for video data compression
This invention provides efficient method and apparatus of the motion estimation for the video compression. A storage device saving MVs of a partial or an entire frame and the prediction modes are...
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7519115 |
Video compression method and apparatus
A video compression system includes first and second dual-port memory devices, a third memory device, and first and second processors that may provide enhanced processing, including motion...
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7519116 |
Teritary content addressable memory based motion estimator
Presented herein are Tertiary Content Addressable Memory based motion estimator(s). In one embodiment, there is presented a method for encoding a picture. The method comprises storing a reference...
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7515638 |
Device and process for estimating noise level, noise reduction system and coding system comprising such a device
The present invention relates to a device and a process for estimating the noise level of video images before coding. The device comprises in particular means of storage of at least one input...
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7515636 |
Image information conversion apparatus and image information conversion method
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...
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7515635 |
Moving picture coding method and a moving picture decoding method
A moving picture coding apparatus includes a motion estimation unit for performing motion estimation by fixing the one of two reference pictures as a reference picture indicated by an inputted...
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7515637 |
Video decoding for motion compensation with weighted prediction
Methods and systems for processing pixels within an encoded video stream are disclosed herein. Aspects of the method may comprise acquiring on a chip, a prediction weight type from the encoded...
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7515634 |
Computationally constrained video encoding
Video encoding techniques are described that involve determining a number of processing cycles used during encoding of a video frame, and encoding the video frame without using motion estimation...
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7512179 |
Image coding and decoding method, corresponding devices and applications
The invention concerns a method for coding images using selectively at least two image coding modes, each optimising compression of at least a video sequence image on the basis of different...
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7512180 |
Hierarchical data compression system and method for coding video data
A hierarchical data compression system and method for encoding and decoding video data by dividing each video frame of the video data into independent layers. Each of the layers contains a specific...
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RE40664 |
Method for display time stamping and synchronization of multiple video object planes
A method of encoding a local time base embedded in the compressed data is disclosed. The local time base is encoded in two parts. The first part has a modulo time base that indicates the specific...
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7499491 |
Apparatus for adaptive multiple-dimentional signal sequences encoding/decoding
A system to process a signal sequence is described. A hybrid block matching and transform based N-Dimensional signal sequence encoder and decoder is disclosed. The encoder includes encoder side...
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7499493 |
Dual block motion vector storage in compressed form
A method for representing a motion for two blocks. The method generally includes the steps of (A) exchanging a particular value of a plurality of values with a memory, each of the values defining...
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7499492 |
Video compression and encoding method
A method of compressing video data having at least one frame having at least one block and each block having an array of pixels is provided. The method transforms the pixels of each block into...
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7499495 |
Extended range motion vectors
Techniques and tools are described for decoding video data having extended range motion vectors. For example, a sequence level syntax element (such as a flag in a header) indicates whether one or...
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7496165 |
Method and device for motion-compensated noise evaluation in mobile wireless transmission systems
A device for motion-compensated noise evaluation for mobile wireless transmission systems, in which reference symbols are sent out by a transmitter, includes storage devices for reference symbols...
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7492822 |
Compression techniques
In a video encoder a prediction signal at a bit resolution of P is subtracted from an input signal received at a bit resolution of P+Δ, where P is typically 8 bits, and P+Δ, 10 bits. A transform...
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7492820 |
Rate control for video coder employing adaptive linear regression bits modeling
A rate control system is disclosed for video coding applications. The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of...
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7492952 |
Moving picture coding method and moving picture decoding method
According to a picture coding method of the present invention, a coded picture identified by a picture number is stored, as a reference picture, into a storage unit; commands indicating...
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7489727 |
Method and device for online dynamic semantic video compression and video indexing
A technique for semantic video compression is shown in block ( 120 ). Uncompressed video data ( 210 ), including a plurality of video data segments (S 1 , S 2 , . . . Sn), are organized into two or...
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7490123 |
Data compression
A data compression apparatus for performing data compression on input data comprises a quantisation parameter estimation arrangement for deriving an estimated value of a quantisation parameter used...
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7489728 |
Apparatus and method for coding moving image
A moving image coding apparatus has a blocking unit for dividing an image applied in units of frames into a plurality of blocks, a mode selection unit for selectively performing intra-frame coding...
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7489729 |
Method and apparatus for implementing reduced memory mode for high-definition television
A method and apparatus are provided for implementing an enhanced reduced memory mode (RMM) of decoding HDTV MPEG-2 video stream. In one instance, the RMM mode is adaptively enabled with up/down...
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7486734 |
Decoding and coding method of moving image signal, and decoding and coding apparatus of moving image signal using the same
A decoding method and coding method of moving image signal, and a decoding apparatus and coding apparatus using the same, provides for coding or decoding at least two or more motion vectors,...
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7486729 |
Video signal analysis and storage
A video recording and logging device includes apparatus to detect scene changes (as distinct from shot cuts or edit points) in audio/video signals. The apparatus includes a filtering arrangement...
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7486207 |
Method and device for changing an encoding mode of encoded data streams
A method, a component, a system, and a computer program for changing an encoding mode of an encoded data stream from a first encoding mode to a second encoding mode are disclosed. The encoded data...
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7486719 |
Transcoder and code conversion method
A two-way conversion transcoder comprising a spectrum parameter calculation circuit that calculates a spectrum parameter for a signal produced by decoding a first code; a coefficient calculation...
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7483484 |
Apparatus and method for detecting opaque logos within digital video signals
A detection method and system that allows detecting an opaque logo after it has appeared in the digital video program for a short period of time, by deriving and analyzing the stochastic...
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7483037 |
Resampling chroma video using a programmable graphics processing unit to provide improved color rendering
A system which utilizes the processing capabilities of the graphics processing unit (GPU) in the graphics controller. Each frame of each video stream is decoded. After decoding the compressed image...
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7483488 |
Systems and methods for improving bit rate control of video encoding by correcting for the effects of scene changes and bit stuffing in a video buffer verifier (VBV) buffer model
The invention is related to methods and apparatus that advantageously improve picture quality in a video encoder, such as an MPEG video encoder. The picture quality of a video encoder can be...
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7480335 |
Video decoder for decoding macroblock adaptive field/frame coded video data with spatial prediction
Described herein is a video decoder for decoding macroblock adaptive field/frame coded video data with spatial prediction. In one embodiment, there is presented a spatial predictor for processing a...
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7477690 |
Macroblock level adaptive frame/field coding for digital video content
A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of...
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7477688 |
Methods for efficient bandwidth scaling of compressed video data
The present invention relates to systems and methods for efficient bit rate alteration of a bitstream to match an available channel capacity. The efficient bit rate alteration includes selective...
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7471724 |
Method and apparatus for adaptive multiple-dimensional signal sequences encoding/decoding
A hybrid block matching prediction and transform based n dimensional signal sequence encoder, including an encoder motion estimator, having a cost function. A first embodiment includes an...
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7471722 |
Video encoding device and method
A video encoding device capable of performing a near-real-time encoding process while restraining deterioration in image quality. A first encoding section encodes a video signal to generate a first...
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7469009 |
Image decoding apparatus, image coding apparatus, image communications system and coded bit stream converting apparatus
An image decoding apparatus is capable of decoding coded bit streams with different coding schemes. The image decoding apparatus includes a coding scheme decision section for deciding a coding...
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7466245 |
Digital signal processing apparatus, digital signal processing method, digital signal processing program, digital signal reproduction apparatus and digital signal reproduction method
A digital signal processing apparatus includes: a detection section; a prediction section; and a decision section. The detection section is configured to detect a signal position at which a signal...
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7463789 |
Image-processing device, its method, its program and recording medium storing the program
An image-processing device ( 130 ) includes a data access section ( 131 ) that reads composite image data ( 10 ) having one data structure in which a plurality of image data are combined, and a...
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7463684 |
Fading estimation/compensation
Techniques and tools for performing fading estimation and compensation in video processing applications are described. For example, a video encoder performs fading compensation on one or more...
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7463687 |
Method and apparatus for performing high quality fast predictive motion search
A method and apparatus for performing a predictive motion search in a video encoder system using motion vectors representing the difference in coordinates of a macroblock of data in a current frame...
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7460629 |
Method and apparatus for frame-based buffer control in a communication system
A method and apparatus are disclosed for controlling a buffer in a digital audio broadcasting (DAB) communication system. The decoder buffer level limits are specified in terms of a maximum number...
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7457358 |
Polymorphic codec system and method
An input module obtains a media signal to be communicated to a destination system, after which an identification module identifies a plurality of scenes within the media signal. A codec includes a...
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7457359 |
Systems, devices and methods for securely distributing highly-compressed multimedia content
A multimedia distribution device includes a nonvolatile memory that stores a compressed media signal in which at least two scenes are selectively compressed using different codecs from a codec...
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7457362 |
Loop deblock filtering of block coded video in a very long instruction word processor
This invention is applicable to filtering block artifacts of macroblock and block oriented video compression. This invention computes all possible filter results speculatively and simultaneously in...
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7453937 |
Method and device for selecting a transcoding method among a set of transcoding methods
A method of selecting a method from a set of methods of transcoding digital multimedia data, the data being transferrable between at least two communication apparatuses via a communication network....
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7454692 |
Encoder based error resilience method in a video codec
Improved error resiliency of an encoding device, such as a video codec or encoder, operating in a compressed data transmission system, is achieved by enabling the encoding device to “shadow” or...
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7450638 |
Power-line communication based surveillance system
A surveillance system configured for communicating with video cameras and other devices connected over a power-line communication network, such as within a residence, or alternatively a commercial...
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7450642 |
Fast motion vector prediction method
A method of rapidly generating motion vector predictions based on vertical and horizontal position categorization of macroblocks within a video object plane (VOP) for use within a video decoder or...
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