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7151799 |
Transcoder for coded video
Provided is a transcoder for coded video the encoding mode of that is changed according to the coded data, itself, that has been compressed by transcoding, or information prepared by decoding only...
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7151856 |
Picture coding apparatus and picture coding method
A frame group target bits number calculating unit ( 31 ) reads the total number of bits on frame group basis allocatable to residual frames from a storing unit ( 36 ), updates subtracting 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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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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7145946 |
MPEG video drift reduction
A drift reduction method and apparatus. Drift reduction is effected in an MPEG video transcoder by decoding dropped out pixels to form a drift reference frame. The quantization indices in the...
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7145950 |
Method of motion vector determination in digital video compression
Pixel information of a current block is correlated with pixel information of a reference frame indicated by a first motion vector of a block proximate to the current block, pixel information of the...
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7146056 |
Efficient spatial scalable compression schemes
A method and apparatus is disclosed for enhancing the efficiency of spatial scalable compression schemes by lowering the bitrate of the enhancement layer. The complete image is used during motion...
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7145951 |
Method and related apparatus for motion estimation
A method and related apparatus for motion estimation in a video compression system uses a cost function different from that of the prior art to determine an optimal motion vector for a current...
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7142600 |
Occlusion/disocclusion detection using K-means clustering near object boundary with comparison of average motion of clusters to object and background motions
An object in a video sequence is tracked by object masks generated for frames in the sequence. Macroblocks are motion compensated to predict the new object mask. Large differences between the next...
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7142601 |
Transcoding compressed videos to reducing resolution videos
A method and system transcodes an input video to a lower spatial resolution. The input video is first decoded into pictures. Each picture includes a set of macroblocks. Each picture sub-sampled to...
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7142602 |
Method for segmenting 3D objects from compressed videos
A method segments a video into objects, without user assistance. An MPEG compressed video is converted to a structure called a pseudo spatial/temporal data using DCT coefficients and motion...
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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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7133451 |
Systems and methods for refreshing macroblocks
In one embodiment, an adaptive motion area process is performed to determine which macroblocks are to be intracoded. Adaptive motion change detection can efficiently reduce the large propagation...
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7133452 |
Method and system for transcoding video data
A first method of transcoding video data is disclosed that generates a motion vector for a macroblock encoded as a dual prime macro block that has a direct motion vector, and differential motion...
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7133453 |
Motion vector detection apparatus for performing checker-pattern subsampling with respect to pixel arrays
A motion vector detection apparatus for detecting a motion vector by performing block matching between a target block including a plurality of pixels in a current image, and a reference block...
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7130351 |
Storage reduction during compression
Decompressing compressed video information using relatively less temporary storage is disclosed. A compressed bit stream of video information including a compressed portion is received. A reverse...
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7126990 |
Method and apparatus for controlling a stereo video display with non-stereo video source
An apparatus for controlling a stereo video display with non-stereo video source includes a memory, a read/write controller and a motion analyzer. The memory stores a current frame, a previous...
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7126991 |
Method for programmable motion estimation in a SIMD processor
The present invention provides a 16×16-sliding window using vector register file with zero overhead for horizontal or vertical shifts to incorporate motion estimation into SIMD vector processor...
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7123275 |
Strobe image composition method, apparatus, computer, and program product
There are disclosed a method, apparatus, computer, and program product for generating a strobe composite image from a plurality of frames of a moving image. A first frame is selected from the...
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7116831 |
Chrominance motion vector rounding
Various techniques and tools for chrominance motion vector rounding are described. For example, during motion compensation, a video encoder or decoder converts luminance motion vectors into...
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7116716 |
Systems and methods for generating a motion attention model
Systems and methods to generate a motion attention model of a video data sequence are described. In one aspect, a motion saliency map B is generated to precisely indicate motion attention areas for...
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7113544 |
Motion detecting device
In a motion detecting device, with respect to a target pixel for which detection of motion is going to be performed, the threshold value to be used by comparator circuits 9 and 10 is varied...
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7113545 |
Method and apparatus for motion compensated temporal interpolation of video sequences
A method and device for processing video signals is provided, comprising the steps of: selecting a motion vector having the least mean square error from an M×N block, applying a vector filter to...
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7113543 |
Video encoding
Motion compensation as for video compression with motion estimation with either frame mode or field mode by initial prediction of motion mode and when prediction error is small enough truncate...
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7110456 |
Video encoder, video decoder, video encoding method, video decoding method, and video encoding and decoding system
A method and a video decoder for decoding an encoded bitstream of video data in a picture encoding and decoding system are disclosed. The video decoder includes a motion compensation unit for...
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7110454 |
Integrated method for scene change detection
A system and method for detecting scene changes in a sequence of video frames utilizing a combination of a plurality of difference metrics including an interframe difference metric, a histogram...
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7110451 |
Bitstream transcoder
In a bitstream transcoder, the computational cost and the memory area are suppressed so that stream transcoding is performed with a reduced number of times of computing and a reduced memory area....
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7110453 |
Motion or depth estimation by prioritizing candidate motion vectors according to more reliable texture information
In a motion or depth estimation method, a set (CS) of candidate motion vectors, or depth values formed by already obtained motion vectors, or depth values for neighboring image parts which are...
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7110455 |
Noise reduction pre-processor for digital video using previously generated motion vectors and adaptive spatial filtering
Noise is reduced in a video system by applying motion compensated temporal filtering using previously generated motion vectors and adaptive spatial filtering at scene change frames. Various types...
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RE39277 |
Method for determining motion compensation
A method for predicting motion compensation of determining of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a first...
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RE39281 |
Method for determining motion compensation
A method for predicting motion compensation for determining of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a...
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7099393 |
Motion vector detection apparatus for performing checker-pattern subsampling with respect to pixel arrays
A motion vector detection apparatus for detecting a motion vector by performing block matching between a target block including a plurality of pixels in a current image, and a reference block...
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7099392 |
Motion vector searching method using plural search areas
A motion vector searching system and method estimates a motion vector during image compression by acquiring a present image frame and at least one previous image frame, generating low-resolution...
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7099391 |
Image capturing device
An image capturing device for capturing an image by an imaging device comprises first compression means for compressing and coding a captured image as a moving image, extracting means for...
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7095444 |
Method and apparatus for generating, distributing and reconstructing deconstructed video
A method and apparatus for deconstructing video into a hierarchical structure, distributing the deconstructed video and reconstructing the deconstructed video to form a video signal having...
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7095786 |
Object tracking using adaptive block-size matching along object boundary and frame-skipping when object motion is low
An object in a video sequence of frames is tracked by object masks generated for frames in the sequence. Macroblocks are motion compensated. Blocks matching entirely within a prior-frame object...
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7092444 |
Image signal decoder for determining interframe motion
On input coded data, variable length decoding is performed, and motion vector information extracted. The motion vector information is transmitted to the threshold value determination section, and a...
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7088773 |
Motion segmentation system with multi-frame hypothesis tracking
In one embodiment, a video encoder encodes digital video using motion segmentation. According to one embodiment, motion segmentation is performed using multiple frames. The motion segmentation may...
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7088774 |
Media stream synchronization
A system and method of synchronizing a media stream involves determining urgency measures and favorability measures. An urgency measure relates to a degree by which a media stream is currently out...
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7088772 |
Method and apparatus for updating motion vector memories
A method and apparatus for updating motion vector memories used for prediction of motion vectors in a video compression coding/decoding method and system. For a frame composed of N macroblocks in...
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7082210 |
Moving object detector and image monitoring system
A coded stream analyzer ( 102 ) variable-length decodes an incoming coded stream and extracts encoding parameters for each macroblock, such as an encoding mode, DCT coefficient values, the amount...
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7082165 |
Video compression and transmission apparatus and video compression and transmission method
The video compression transmission apparatus comprises a video input unit for inputting pictures, a video compression unit for compressing input pictures, a video transmission unit for transmitting...
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7079580 |
Moving picture encoder, moving picture encoding method, moving picture encoding program used therewith, and storage medium storing the same
In a moving picture encoder, a motion-vector detection circuit detects each motion vector between frame pictures of moving picture data, and compression encoding units perform compression encoding...
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7079159 |
Motion estimation apparatus, method, and machine-readable medium capable of detecting scrolling text and graphic data
A motion estimation apparatus, method, and machine-readable medium capable of detecting scrolling text or graphic data, which can provide information of whether text or graphic data scrolling in a...
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7079581 |
Apparatus and method for controlling variable bit rate in real time
An apparatus and method for controlling a variable bit rate in real time are provided, including an encoding unit for performing a predetermined image conversion on present video data to be encoded...
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7079579 |
Block matching processor and method for block matching motion estimation in video compression
There is provided a block matching processor and method for flexibly supporting block matching motion estimation at motion vector prediction modes using matching blocks of various sizes. Each of...
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7075989 |
Motion compensating apparatus, moving image coding apparatus and method
The present invention provides a motion compensating apparatus which is capable of enhancing the overall coding efficiency by taking the amount of coded information used to code a motion vector as...
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7075987 |
Adaptive video bit-rate control
The present disclosure relates to the compression of data and, more particularly, to the compression of video data based at least upon a variable bit rate compression scheme.
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7075988 |
Apparatus and method of converting frame and/or field rate using adaptive motion compensation
An apparatus and method which includes estimating a motion vector of a frame and/or field to be interpolated and the accuracy of the motion vector using motion vectors of previous and next frames...
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7072402 |
Methods and apparatus for dynamically adjusting f-codes for a digital picture header
The present invention provides methods and apparatus for dynamically adjusting f-codes for a digital picture header of a coded picture. A video encoder having at least one motion estimation stages...
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