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7236525 |
Reconfigurable computing based multi-standard video codec
A circuit generally comprising a multiport memory, a direct memory access engine and a programmable gate array is disclosed. The direct memory access engine may be configured to transfer a first...
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7227894 |
Method and apparatus for MPEG-4 FGS performance enhancement
An architecture of a fine granularity scalable (FGS) codec has an encoder and a decoder configurable in three prediction modes. The coarse prediction loop in the base layer of the encoder has a...
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7224730 |
Systems and methods for decoding redundant motion vectors in compressed video bitstreams
The invention is related to methods and apparatus that decode robustly encoded video bitstreams. One embodiment of a decoder can advantageously reconstruct a predictive-coded video object plane...
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7224733 |
Interpolation filtering method for accurate sub-pixel motion assessment
To generate an improved image signal when estimating motion, a motion vector is first determined with pel accuracy, and a two-step interpolation filtering is subsequently carried out with sub-pel...
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7221708 |
Apparatus and method for motion compensation
An apparatus and method for generating a motion compensated matrix, the method includes the steps of: (i) providing a motion vector and at least one input matrix of DCT coefficients; (ii) selecting...
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7221706 |
Systems and methods for performing bit rate allocation for a video data stream
The present invention is related to video encoding. In an embodiment, a bit budget is calculated for a first scene. In addition, bit budgets for corresponding frames, including at least a first...
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7212573 |
Method and/or apparatus for determining minimum positive reference indices for a direct prediction mode
An apparatus comprising a first processing circuit and a second processing circuit. The first processing circuit may be configured to generate (i) one or more prediction samples and (ii) a...
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7212570 |
Video converter and computer program for executing said video converter
A video converter for converting a coding format of a great deal of video contents has three kinds of conversion modes including a conversion mode for performing conversion in two steps in...
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7209591 |
Motion compensation method for video sequence encoding in low bit rate systems
A method for motion accounting and compensation while encoding allows improvement of the restored image quality. Image is a predicted frame in video sequence. Motion compensation is understood as...
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7206344 |
Method and apparatus for displaying video
A method and apparatus for displaying different presentations of program material allows various presentations of a DVD movie, for example, to be displayed on a display for a user's selection. The...
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7206345 |
Method of decoding coded video signals
The invention relates to a video decoding method for decoding a set of video signals comprising a base layer signal and at least one enhancement layer signal and for supplying a decoded output...
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7203235 |
Architecture and method for fine granularity scalable video coding
A robust fine granularity scalability video encoding includes a base layer encoder and an enhancement layer encoder in which motion compensated difference images are generated by comparing an...
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7203236 |
Moving picture reproducing device and method of reproducing a moving picture
A moving picture reproducing device includes a compressed data buffer, a display size obtaining unit, a resolution selecting unit, four kinds of resolution decoding units, and a frame data buffer....
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7200174 |
Video coding system
A motion estimation method and system for a video coder are disclosed. The system comprises an input for a video image to be coded. It also comprises a hierarchical series of motion estimators of...
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7194033 |
Efficient video coding
A method ( 1600 ) and apparatus ( 220 ) for encoding a sequence of images for transmission over a communication network is disclosed. Initially ( 1602 ) an object-based first image is rendered from...
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7194032 |
Circuit and method for modifying a region of an encoded image
A video processing circuit includes a processor that receives an encoded image having first and second regions, decodes the first region of the image, modifies the decoded first region, and...
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7193660 |
Image processing apparatus
According to the present invention, an image processing apparatus is provided for inputting moving image data composed of a plurality of frames, for detecting definitions of a plurality of frames...
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7180901 |
System and method using a packetized encoded bitstream for parallel compression and decompression
A system and method are disclosed for parallel compression and decompression of a bitstream. For compression, the bitstream is separated into a plurality of components, and the components are...
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7177358 |
Picture coding apparatus, and picture coding method
A picture analyzer detects coding difficulty information by analyzing the source picture data. A picture converter converts the format of the source picture data using spatial conversion or...
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7177356 |
Spatially transcoding a video stream
Systems and methods for transcoding a video stream. An incoming video stream is spatially transcoded to reduce the bit rate of the video stream. The incoming video stream is decoded and the stream...
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7177360 |
Video encoding method and video decoding method
A video encoding method comprises selecting, from predictive modes, a predictive mode, computing a first cost of encoding based on a predictive mode, computing a second cost of encoding based on a...
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7173971 |
Trailing artifact avoidance system and method
A system and method is provided to avoid or otherwise reduce luminance and/or chrominance trailing artifacts in block-based hybrid video coders using multiple block sizes and shapes. The proposed...
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7174384 |
Method for delivering large amounts of data with interactivity in an on-demand system
A method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client...
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7173968 |
Method for coding and decoding a digitalized image
A method and an arrangement in which a digitized image with picture elements is allocated to a number of image segments. The image segments, preferably image blocks, are spread such that...
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7170933 |
Method and system for objective quality assessment of image and video streams
A method to predict visual quality of a DCT (discrete cosine transform) based compressed image or video stream without referring to its source. When applied to an MPEG video stream, the method is...
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7170941 |
Temporal compression
The present invention discloses a temporal compressor and decompressor for sequences of images. The compressor includes an interface for receiving the sequence of images. A spatial compressor...
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7170940 |
Moving picture encoding system
A moving picture encoding system capable of bit rate control, by which moving pictures are encoded while maintaining high quality even when there are substantial changes in the size of objects and...
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7167521 |
Video encoding apparatus and video decoding apparatus
An alpha-map encoding apparatus includes a first down-sampling circuit ( 21 ) for down-sampling an alpha-map signal which represents the shape of an object and the position in the frame of the...
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7164717 |
Systems and methods for detecting scene changes in a video data stream
The present invention is related to video encoding. In an embodiment, a first root mean squared (RMS) value is calculated for a first frame relative to a second frame, and a second frame relative...
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7161983 |
Adaptive motion vector field coding
A method for motion compensated encoding of video data. The method comprises the steps of:
generating a motion vector field of video pixels of a current frame to be coded based on a...
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7154950 |
Adaptive early exit techniques in image correlation
Plural sum of absolute difference devices are used to calculate distortions between specified parts of specified images in a video stream. The video can be from a video camera, or other device.
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7154951 |
Motion video signal encoder and encoding method
A motion video signal encoder maximizes image quality without exceeding transmission bandwidth available to carry the encoded motion video signal by comparing encoded frames of the motion video...
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7154949 |
Picture coding device and method, picture transmitting device and method and recording medium
In a quantizing circuit 15 , DCT coefficients output from a DCT circuit 14 are quantized with the quantizing step corresponding to a quantizing index supplied from a quantizing index determining...
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7154953 |
Video bit stream decoding system and method used in a video decoding apparatus
The invention relates to a decoding apparatus and same method for decoding a video bit stream. The apparatus decodes an encoded video bit stream to produce pixel data of a first and second...
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7151857 |
Image interpolating method and apparatus
An image input unit acquires a first image and a second image. A matching processor computes a matching between those images such that corresponding points are obtained on the second image with...
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7149249 |
Color video codec method and system
In one aspect of a preferred embodiment, the present invention comprises a system for video compression comprising a video preprocessor; a predictor configured to receive video data from the...
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7149251 |
Apparatus, and associated method, for forming a compressed motion vector field utilizing predictive motion coding
Apparatus, and an associated method, motion compensates coding of video sequences. Motion compensated prediction is utilized in the representation of motion vector fields. Reduced numbers of bits...
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7148908 |
Method and apparatus for generating image transitions
A transition in an MPEG sequence including anchor pictures and bidirectionally predicted (B) pictures is encoded by a) coding first and second anchor pictures and b) coding a transition in the...
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7149248 |
Command packet system and method supporting improved trick mode performance in video decoding systems
A system, method, and apparatus for reducing the video decoder processing requirements are presented herein. During a rewind operation, a reference picture for a group of pictures is decoded and...
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7149250 |
Video encoding method
The present invention relates to an encoding method processing video object planes (VOPs) of I, P or B type and including a dynamic allocation of said VOPs. According to said method, for each input...
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7145949 |
Video signal quantizing apparatus and method thereof
A residue code amount is calculated. A threshold act_thrsh corresponding to the residue code amount is obtained. A variable mb that designates a macro block is initialized to zero. The variable mb...
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7142598 |
Adaptive DCT/IDCT apparatus based on energy and method for controlling the same
Adaptive DCT/IDCT apparatus based on energy and method for controlling the same. The adaptive DCT/IDCT apparatus relates to a coding unit of a MPEG4/H.263 video coder, and performs an image...
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7143434 |
Video description system and method
The present invention relates to a system for generating a description record from multimedia information including, e.g., video data. A multimedia information input interface is used to receive...
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7139315 |
Apparatus and process for decoding motion pictures
A motion picture decoding apparatus according to the invention includes: a coefficient reducing circuit for removing orthogonal transform coefficients for high horizontal frequencies from a certain...
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7139313 |
Digital video signal encoder and encoding method
A motion video signal encoder maximizes image quality without exceeding transmission bandwidth available to carry the encoded motion video signal by comparing encoded frames of the motion video...
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7139317 |
Segment-based encoding system using exposed area filling performed by an encoder and a decoder
An encoding system encodes and decodes video data using an exposed area fill processor. A nonkey frame is encoded as a set of kinetic information relating segments of a reference frame to the...
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7133447 |
Motion estimation method using adaptive mode decision
A motion estimation method using adaptive mode decision is disclosed. The method includes a motion vector difference value calculation step of calculating a motion vector difference value using an...
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7130348 |
Systems and methods for reduced bit-depth processing in video-related data
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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7130472 |
Image distribution apparatus, communication terminal apparatus, and control method thereof
An image distribution apparatus divides image data of a single frame into a plurality of blocks, orthogonally transforms the blocks and calculates transformation coefficients, quantizes the...
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7126993 |
Information processing apparatus, information processing method and recording medium
Encoding parameters of picture and higher layers of importance to a number of applications, and encoding parameters of slice and lower layers of no importance to all applications are converted into...
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