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7072398 |
System and method for motion vector generation and analysis of digital video clips
Given a digital video clip, this invention describes how to efficiently compute the motion vectors and motion trajectory of each identified video object for facilitating various commonly...
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7072397 |
Optimal encoding of motion compensated video
The present invention involves a system and method for performing motion estimation. For each candidate motion vector, encoding distortion is determined between a macroblock and a reconstructed...
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7072399 |
Motion estimation method and system for MPEG video streams
The present invention discloses a motion estimation method for MPEG video sequences. The method makes use of a global motion estimation algorithm to determine a set of dominant motion components. A...
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7068721 |
Method and configuration for coding a digitized picture, and method and configuration for decoding a digitized picture
Pixels in a digitized picture are grouped into picture blocks, which in turn are grouped at least in a first picture region and a second picture region. An overall motion vector is determined,...
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7068722 |
Content adaptive video processor using motion compensation
A system and method for providing a method for reducing artifacts in a video sequence of image frames is disclosed. The method and system include classifying scenes in the sequence of image frames,...
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7065139 |
Video encoding method and video encoder for improving performance
Video encoding methods and video encoders that provide improved performance while reducing power consumption. In one aspect, a video encoding method comprises the steps of outputting a parameter...
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7061980 |
Method of describing object region data, apparatus for generating object region data, video processing method, and video processing apparatus
An object-region-data describing method for describing object region data relating to a time-series variation of an object region in video data including a plurality of frames, the method...
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7061981 |
Motion vector conversion method and conversion apparatus
The invention provides a motion vector conversion method by which the coding efficiency in image coding of MPEG4 in an image information conversion method can be augmented. In the motion vector...
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7058230 |
Method and apparatus for encoding image data, and computer-readable recording medium in which program for encoding image data is recorded
An accurate encoding of image data representing a source image, which data is divided into a multiplicity of blocks is performed in accordance with features of the source image by defining a...
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7058130 |
Scene change detection
In one embodiment, a scene change detection component of a video encoder uses motion vectors to determine whether a scene change occurs in a video sequence. The scene change detection component...
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7054366 |
Systems and methods for MPEG subsample decoding
A decoder decimates MPEG or other video data by subsampling the output of an inverse discrete cosine transform (IDCT) module. The decimation process is useful for reducing the volume of data that...
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7050653 |
Identification of virtual raster pattern
A method aims to identify a virtual raster pattern in an image of a surface that is provided with a plurality of position-coding marks. Each mark is associated with a respective intersection of...
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7050500 |
Method and apparatus for motion vector coding with global motion parameters
A global motion vector coding scheme is used for coding or decoding an image. Global motion parameters are associated with a current image frame. Local motion vectors are derived from the global...
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7050502 |
Method and apparatus for motion vector detection and medium storing method program directed to the same
A method and apparatus for performing motion estimation under a motion estimation mode suitable for an amount of motion within each E-block detects a motion vector with a small amount of...
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7050501 |
Digital noise reduction techniques
A preprocessor system ( 10 ) reduces random noise in video pixels by providing a memory ( 19 ) arranged to store first pixels processed during a first time period. A motion detector ( 300 )...
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7050108 |
Motion vector correction circuit and method
It is determined whether each block ( 51 ) including a plurality of pixels extracted from a basic field ( 30 ) has an edge or not, and then which state, stationary or non-stationary, each of the...
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7046821 |
Image detection processor
An image detection processor of the present invention enhances the processing speed of the calculation of the center of gravity or the like of a target with a simple constitution. The image...
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7046732 |
Video coloring book
A decomposed original video sequence includes one or more original camera-motion layers and zero or more original fixed-frame layers decomposed from an original video sequence. The decomposed...
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7042945 |
3-D recursive vector estimation for video enhancement
A video signal processor enhancing video information evaluates candidate vectors of enhancement algorithms utilizing an error function biased towards spatio-temporal consistency with a penalty...
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7039111 |
Film mode detecting apparatus and method thereof
A film mode detecting apparatus and method for detecting a film mode by using a periodicity of motion vectors having high autocorrelativity. A motion vector calculating unit adds a size of motion...
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7039109 |
Reducing halo-like effects in motion-compensated interpolation
The invention relates to a motion-compensated interpolation of a data-signal, which data-signal comprises successive images wherein each image comprises groups of pixels, in which motion vectors...
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7039110 |
Methods of and units for motion or depth estimation and image processing apparatus provided with such motion estimation unit
In the method of motion estimation a tree ( 120 ) of segments ( 102–114 ) of an image ( 100 ) is generated by performing a hierarchical segmentation. The tree ( 120 ) of segments is analyzed to...
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7031387 |
B picture mode determining method and apparatus in video coding system
A B picture mode determining method and apparatus in a video coding system includes the steps of: setting sum of absolute difference (SAD) initial values of a 4×4 and 16×16 intra prediction mode,...
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7031542 |
Encoding rate controlling apparatus and information encoding apparatus
The encoding rate controlling apparatus ( 9 ) is provided with a controlling device ( 9 a , 9 b ) for performing a control for the encoding rate by changing a quantization scale code for quantizing...
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7031388 |
System for and method of sharpness enhancement for coded digital video
A method and system for calculating a UME for each pixel in a frame of video data. A system for enhancing sharpness of a coded digital video signal representative a frame of block-based data is...
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7030905 |
Real-time method and apparatus for tracking a moving object experiencing a change in direction
A method and apparatus for tracking an object using one or more video cameras together with a plurality of microphones and/or geophones, whereby accurate tracking of the object can be obtained even...
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7027512 |
Spatio-temporal hybrid scalable video coding apparatus using subband decomposition and method
In video coding techniques, in order to improve a coding efficiency and reduce a computational complexity sharply by mixing a temporal scalability and a spatial scalability, a spatio-temporal...
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7027511 |
Fast motion estimation using N-queen pixel decimation
The present invention proposes a fast motion estimation using N-queen pixel decimation, whereby after a reference block and a block to be processed are selected in a video sequence, an N×N queens...
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7027509 |
Hierarchical hybrid shot change detection method for MPEG-compressed video
The present invention relates to a hierarchical hybrid shot change detection method in MPEG-compressed video circumstances, wherein the method according to the present invention comprises:...
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7027510 |
Method of estimating backward motion vectors within a video sequence
A method of speeding the computation of backward motion vector estimates which are derived from fields which are available from forward motion vector estimates as based on nearest neighbor...
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7023921 |
Method and apparatus for determining block match quality
A method and apparatus for determining the quality of a block match for a candidate motion vector in a video encoder system using motion vectors representing the difference in coordinates of a...
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7023920 |
Facilitating motion estimation
An apparatus and method for facilitating a subsequent choice of a motion vector from a plurality of candidate motion vectors in a motion estimation method, include receiving video image data from...
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7023919 |
Method for coding motion vector using 2-dimensional minimum bitrate predicting technique
A method for coding a motion vector using a 2-dimensional minimum bitrate predicting technique is disclosed. A mode information (MODE) commonly adopted to the factors ‘X’ and ‘Y’ are...
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7020199 |
Method and apparatus for processing MPEG data
A data proccssing device, for example, an MPEG decoder, comprises a bus system [BUS] over which a transmitter circuit, for example a variable length decoder circuit [VLD], can transfer a series of...
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7020201 |
Method and apparatus for motion estimation with all binary representation
A method of motion estimation for video encoding constructs a binary pyramid structure having three binary layers. A state update module registers and updates repeat occurrence of final motion...
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7020200 |
System and method for direct motion vector prediction in bi-predictive video frames and fields
The present invention is a low complexity method for reducing the number of motion vectors required for bi-predictive frames or fields in digital video streams. The present invention utilizes the...
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7020202 |
Systems for MPEG subsample decoding
Decimating MPEG or other video data by subsampling the output of an inverse discrete cosine transform (IDCT) module. The decimation process is useful for reducing the volume of data that must be...
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7020192 |
Method of retrieving video picture and apparatus therefor
An apparatus for retrieving a video picture includes a decoder section for decoding a coded bit stream of video picture data representing an arbitrary shape object and including shape information...
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7016415 |
Modifying motion control signals based on input video characteristics
A motion detector ( 300 ) detects motion of images represented by video pixels. A first motion detector ( 320 ) is arranged to generate first motion signals (S) representing detected motion of...
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7012963 |
Positioning of images in a data stream
A method and mechanism for repositioning video images in a compressed data stream without requiring bit shifting. A P frame image is to be repositioned from an original position to an alternate...
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7012960 |
Method of transcoding and transcoding device with embedded filters
The present invention relates to a method of transcoding ( 200 ) a primary encoded signal (S 1 ) into a secondary encoded signal (S 2 ). Said transcoding method comprising at least a step of...
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7012958 |
Partition coding method and device
The invention relates to a method of coding segmented pictures, or partitions, divided into homogeneous regions. Said method, called intra-mode coding process, comprises, for each successive...
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7010167 |
Method of geometric linear discriminant analysis pattern recognition
Feature attributes are extracted from an observation space to create feature vectors for each class to be identified. A linear transformation matrix is used to reduce the dimension of the feature...
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7010036 |
Descriptor for a video sequence and image retrieval system using said descriptor
The present invention relates to a descriptor for the representation, from a video indexing viewpoint, of motions of a camera or any kind of observer or observing device within any sequence of...
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7010041 |
Process for changing the syntax, resolution and bitrate of MPEG bitstreams, a system and a computer product therefor
In order to generate, starting from an input MPEG bitstream, an output MPEG bitstream having at least one entity chosen among syntax, resolution, and bitrate modified with respect to the input...
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7010042 |
Image processor and image display apparatus provided with such image processor
The image processor ( 101 ) for motion compensated image processing comprises a motion compensation unit ( 106 ) for calculating an output image based on a particular motion vector field and based...
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7010039 |
Motion estimator for reduced halos in MC up-conversion
An apparatus for detecting motion at a temporal intermediate position between a previous image and a next image has optimizing means ( 1 ) for optimizing a criterion function for candidate vectors,...
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7010040 |
Apparatus and method of transcoding image data in digital TV
A method and an apparatus of transcoding image data in a digital TV system are disclosed. The method and apparatus of the present invention performs global and local motion compensation processes...
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7006100 |
Cache memory system
A cache memory system is used in a motion estimation system. The system includes: a first cache memory defined in terms of a first width and a first height, and a second cache memory defined in...
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7006571 |
Method of synthesizing interframe predicted image, and image coding and decoding method and device therefore
A method is provided to simplify the computation involved in global motion compensation and warping prediction in coding and decoding of motion compensated image signals. In the synthesis of a...
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