ENCODING SYSTEM AND ENCODER REALLOCATION METHOD

An encoding system includes a plurality of encoders each of which encodes a signal having continuity supplied from a corresponding one of a plurality of information sources and generates a packet containing a portion of the encoded signal. Each encoder is classified as a first encoder which encodes the signal, or a second encoder which transfers the packet from at least one of the first encoders, to a communication network and which, when the first encoder has failed, replaces the failed first encoder. When a failure occurs in either one of the first and second encoders for any of the signals, the other one of the encoders detects the occurrence of the failure, reallocates the encoders other than the failed encoder so as to act as the first encoder or second encoder for respective ones of the information sources, and notifies each encoder of the result of the reallocation. 1. An encoding system which encodes signals having continuity supplied from a plurality of information sources and transmits the encoded signals onto a communication network , comprising:each of a plurality of encoders configured to encode a corresponding one of the signals and generate a packet containing a portion of the encoded signal;a matrix switch configured to direct the signals from the plurality of information sources to each of the plurality of encoders; anda network switch configured to transfer the packet output from any one of the plurality of encoders to another one of the plurality of encoders or to the communication network, wherein:the plurality of encoders are each classified as a first encoder which encodes the signal supplied from one of the plurality of information sources, or a second encoder which receives via the network switch the packet output from at least one of the first encoders and transfers the packet to the communication network and which, in the event of failure of one of the first encoders, replaces the failed first encoder, generates the packet by encoding the ...

Layered locally cached content transcoding system

A system for transcoding locally cached content may include a memory configured to store at least a video stream. A controller communicatively coupled to the memory may be configured to determine a video definition format of a requested video stream and compare the requested video stream with a video definition format of a cached version of the requested video stream. A transcoder coupled to the controller may be configured to convert the cached version of the requested video stream to a lower video definition format if the video definition format of the cached version is determined to be higher than the video definition format of the requested video stream. If the video definition format of the requested video stream is same as the video definition format of the cached version, the controller may supply the requested video stream using the cached version stored in the memory without transcoding.

Video decoding using parsed intermediate representation of video data for subsequent parallel decoding

 A video decoding apparatus comprises at least one parsing unit 130,140 configured to receive input video data 110 as an encoded video bitstream which contains sequential internal dependencies, e.g. entropy coding or motion vector dependencies in a stream encoded using the base and enhancement layer-based scalable video coding (SVC) standard. The parsing units generate an intermediate representation (intermediate format) of the input video data in which at least a subset of the sequential internal dependencies are resolved - e.g. comprising a macroblock type for each macroblock for a sequence, or a motion vector or set of transform coefficients for at least one macroblock in the sequence; intermediate representations are stored in buffers 150, 160, 170. The video decoding apparatus further comprises a reconstruction unit 180 configured to retrieve in parallel plural input streams of the intermediate representation and perform a decoding operation on the plural streams in parallel - e.g. including parallel de-quantisation, for different quality (base, enhancement) layers (see Figure 7) - to generate decoded output video data. An equivalent method, as set out in Figure 8, is also disclosed.

Object tracking using momentum and acceleration vectors in a motion estimation system

System of intra-picture complexity preprocessing

Methods and apparatus for adaptively choosing a search range for motion estimation

Systems, methods, and computer program products that can be used to determine a search range (SR) when performing motion estimation at, for example, a video encoder or decoder. Determining a motion vector for a current block during motion estimation may involve searching within a search window that may reside in a reference frame, or in a previously decoded block that spatially or temporally neighbors the current block. Such a search seeks a motion vector that minimizes a metric, such as a sum of absolute differences between corresponding blocks of reference frames. A motion vector that minimizes such a metric may be a good candidate for use in motion estimation. The search may become more efficient if a search range is determined such that the extent of the search is bounded. A search range may be determined at the block level or at the picture level.

Method for signal conditioning

Video encoding and decoding

Decoder system for decoding multi-standard encoded video

Presented herein are a decoder system for decoding multi-standard encoded video. In one embodiment, there is presented a system for decoding video data. The system comprises an outer loop symbol interpreter and an inner loop symbol interpreter. The outer loop symbol interpreter decodes VC-1 syntax and AVC syntax, at a slice or picture level. The inner loop symbol interpreter decodes VC-1 and AVC syntax at a macroblock level.

Object tracking using momentum and acceleration vectors in a motion estimation system

Methods and apparatus for adaptively choosing a search range for motion estimation

Systems, methods, and computer program products that can be used to determine a search range (SR) when performing motion estimation at, for example, a video encoder or decoder. Determining a motion vector for a current block during motion estimation may involve searching within a search window that may reside in a reference frame, or in a previously decoded block that spatially or temporally neighbors the current block. Such a search seeks a motion vector that minimizes a metric, such as a sum of absolute differences between corresponding blocks of reference frames. A motion vector that minimizes such a metric may be a good candidate for use in motion estimation. The search may become more efficient if a search range is determined such that the extent of the search is bounded. A search range may be determined at the block level or at the picture level.

Image processing device and method, and image display device and method

To interpolate a frame between the current frame and a first delayed frame preceding the current frame, an image processing device generates test interpolation data for the first delayed frame from data in point-symmetric positions in the current frame and in a second delayed frame preceding the first delayed frame. Motion vectors pointing from the first delayed frame to the current frame are found by evaluating different test interpolation data against the actual data of the first delayed frame. These motion vectors are converted to pairs of motion vectors pointing from the first delayed frame and the current frame to the interpolated frame, and these pairs of motion vectors are used to detect occlusion and generate accurate data for the interpolated frame from the data of the first delayed frame and the current frame, excluding occluded data.

Motion picture encoding device and motion picture decoding device

When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.

Context adaptive binary arithmetic decoding for high definition video

Motion estimation

A motion estimator has a spatial sub-sampler to receive input images; at least one motion estimator determining motion vectors between input images and sub-sampled motion vectors between sub-sampled images; an up-sampler for up-sampling the sub-sampled motion vectors; and a selector for providing a motion vector output by selecting between the motion vectors and the (up-sampled) sub-sampled motion vectors, according to motion vector confidence.

A video decoding apparatus and method

Encoding apparatus, electronic device, imaging apparatus, and imaging system

Disclosed herein is an encoding apparatus including: an encoding execution block configured to encode moving image data in accordance with setting; and a setting block configured to make setting for the encoding execution block to execute the encoding. If an image of the moving image data is darker than usual, the setting block makes the setting so as to decrease a code amount of the darker image of the moving image data, and the encoding execution block encodes the darker image of the moving image data in accordance with the setting for decreasing the code amount of the darker image.

Parallel parsing in a video decoder

A near optimal configurable adder tree for arbitrary shaped 2d block sum of absolute differences (sad) calculation engine

A near optimal configurable adder tree for arbitrary shaped 2D block sum of absolute differences (SAD) calculation engine

Piecewise processing of overlap smoothing and in-loop deblocking

Method for encoding and decoding using variable length coding and system thereof

A method for encoding using a variable length coding is provided, which includes at an encoding system, determining variable length codes for coding a data set to be encoded, dividing a corresponding code corresponding to a specific data included in the data set into a first partial code and a second partial code and storing the divided first and second partial codes at the encoding system, and compressing a first partial code, which is a set of the first partial code, and storing the compressed result at the encoding system.

Method and apparatus for storing video streams

A system and method of storing digital video data of a given coding scheme comprising receiving a stream of encoded video data, processing the stream to identify components within the given coding standard, producing a plurality of sub-streams wherein each sub-stream comprises one or more of the components, and storing each sub-stream separately. Some components of the data stream, in particular those of greater significance, may be replicated in multiple sub-streams. The number of copies of each component category may be controlled according to its sensitivity. Each sub-stream may be stored in a separate file in a tiered storage wherein high significant sub-streams, such as data which renders an image viewable, are stored in higher tiers in the hierarchy. The compression coding scheme may be wavelet, Dirac or JPEG-2000. When a stored file is required, the sub-streams are recombined and decoded. When combining, replicating components may be chosen based upon a quality assessment with priority to those in higher tiers or those with multiple identical components. Error protection may be added to the sub-streams using additional data such as header information to describe the contents of the sub-stream.

Non-transitory computer-readable recording medium, encoding method, encoding device, decoding method, and decoding device

An information processing device compares a particular unit including a plurality of words and each word corresponding to an encoded output previously output to an output buffer, when encoding an input text word by word and outputting the encoded input text to an output buffer, detects a duplicating part that includes the particular unit and performs dynamic encoding on the detected part to replace the detected part with a dynamic code.

Resolution based formatting of compressed image data

The disclosure herein relates to devices for compression, decompression or reconstruction of image data for still or moving pictures, such as image data detected with a digital camera. In some embodiments, data channels are compressed using a scalable compression algorithm. The compression algorithm may allow customization of compression parameters, such as a quantization factor, code block size, number of transform levels, reversible or irreversible compression, a desired compression ratio with a variable bit rate output, a desired fixed bit rate output with a variable compression rate, progression order, output format, or visual weighting. A lower quality image or an image with lower resolution may be reconstructed using only some of the compressed data. Use of offsets to various layers and color channels allow reconstruction of the image without requiring decompression of all of the full image data.

Layered locally cached content transcoding system

A system for transcoding locally cached content may include a memory configured to store at least a video stream. A controller communicatively coupled to the memory may be configured to determine a video definition format of a requested video stream and compare the requested video stream with a video definition format of a cached version of the requested video stream. A transcoder coupled to the controller may be configured to convert the cached version of the requested video stream to a lower video definition format if the video definition format of the cached version is determined to be higher than the video definition format of the requested video stream. If the video definition format of the requested video stream is same as the video definition format of the cached version, the controller may supply the requested video stream using the cached version stored in the memory without transcoding.