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7391809 |
Scalable video transcoding
A scalable video transcoder with limited drifting error is disclosed. The transcoder accumulates re-quantization errors of I-frames or P-frames. The accumulated errors are only selectively...
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7391808 |
System and method for upgrading processing capabilities of a media center
Video data encoded according to new compression standards may be processed by an existing client terminal using an adaptive module that transcodes the video data into a format compatible with the...
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7386049 |
Predictive interpolation of a video signal
A method of enhancing picture quality of a video signal is disclosed. The method comprises the steps of generating an interpolated base frame image; receiving a first previously decoded difference...
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7382294 |
Coding apparatus, decoding apparatus, coding method, decoding method, computer readable medium and computer data signal
A coding apparatus includes a predicting unit, an intermediate-code generating unit, a first coding unit and a second coding unit. The predicting unit generates a piece of prediction data based on...
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7379498 |
Reconstructing a compressed still image by transformation to a compressed moving picture image
A transcoder ( 10 ) and a decoder ( 80 ) reconstruct an image from still image compressed data, such as EXIF data. The transcoder transcodes the still image compressed data into a bit stream of...
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7376185 |
Video encoding and video/audio/data multiplexing device
A buffer architecture and latency reduction mechanism for buffering uncompressed/compressed information. This combination provides for a proficient division of the encoding task and quicker...
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7372903 |
Apparatus and method for object based rate control in a coding system
A method and apparatus for selecting a quantizer scale for each object within a frame to optimize the coding rate is disclosed. A quantizer scale is selected for each region or “object” within...
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7369662 |
Maintaining end-to-end synchronization on a telecommunications connection
A method and an arrangement maintain end-to-end synchronization on a telecommunications connection transmitting data in frames substantially in real time and using synchronized end-to-end...
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7369614 |
MPEG decoder of images from multiple sequences
A circuit for controlling an MPEG decoder rated by a signal of given period likely to decode several coded images, receiving at each period beginning an order to decode several images of a first or...
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7369611 |
Image coding apparatus and method of the same
There are provided image coding apparatus and method in which image data is inputted, a continuous change is given to the input image data, the image data is coded, a coding condition when coding...
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7362809 |
Computational reduction in motion estimation based on lower bound of cost function
A method for motion estimation comprising the steps of (A) determining whether a cost of encoding one or more prediction parameters for a current search position is less than a current best cost,...
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7362808 |
Device for and method of estimating motion in video encoder
A motion estimator and an estimation method for a video encoder to reduce power consumption by reducing the computational complexity of the motion estimator. In an upper step, a full search for a...
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7362806 |
Object activity modeling method
An object activity modeling method which can efficiently model complex objects such as a human body is provided. The object activity modeling method includes the steps of (a) obtaining an optical...
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7359439 |
Encoding a still image into compressed video
A method for producing a compressed video bitstream having a plurality of frames from data that specifies a single still image. The still image is encoded into data specifying a single intra...
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7356082 |
Video/audio signal processing method and video-audio signal processing apparatus
A metadata extraction unit has a feature point selection and motion estimation unit 62 for extracting at least one feature point representing characteristics of the video/audio signals in a...
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7356080 |
MPEG-4 encoder using H.263 multimedia chip
An MPEG-4 encoder utilizing an H.263 multimedia chip. The MPEG-4 encoder includes a DC (Direct Current) predictor for predicting a DC component of the image frame encoded by an H.263 standard upon...
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7356078 |
Image encoding device and image decoding device
Multiplexing means of an image encoding device multiplexes object display speed information or image display absolute time information, and an image decoding device performs image processing on the...
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7349473 |
Method and system for selecting interpolation filter type in video coding
A method and system for coding a video sequence based on motion compensated prediction, wherein an interpolation filter is used to generate predicted pixel values for picture blocks in the video...
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7346112 |
Method of and apparatus for decoding and displaying video that improves quality of the video
The frame-memory control-section partitions a frame memory into a plurality of sectors and stores decoded video data of frames not used as predictive video in the frame memory. The frame-memory...
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7346111 |
Co-located motion vector storage
A method for processing a video bitstream is disclosed. The method generally includes the steps of (A) determining co-located motion information for a plurality of co-located sub-blocks in a...
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7346106 |
Robust multi-pass variable bit rate encoding
An encoding manager performs a first-pass encoding of a video sequence, collecting modeling data concerning the sequence in the process. The encoding manager utilizes collected data to construct a...
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7342963 |
Method for calculating an image interpolated between two images of a video sequence
The invention concerns a method for constructing at least an image interpolated between a preceding image and a following image of an animated sequence. The invention is characterised in that the...
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7342960 |
Data storage unit for image compression device
A data storage unit of an image compression device for compressing motion picture frame is provided. The data storage unit comprises: a previous frame field having a plurality of slices; a decoded...
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7336720 |
Real-time video coding/decoding
A video codec for real-time encoding/decoding of digitized video data with high compression efficiency, comprising a frame encoder receiving input frame pixels; a codec setting unit for setting and...
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7333542 |
Moving picture decoding apparatus and moving picture decoding method
A memory compression and expansion section ( 11 of FIG. 1 ) applies compression to a decoded image, and the result is stored in a frame memory. Based on an occupied content of the frame memory...
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RE40079 |
Video encoding and decoding apparatus
An encoding apparatus includes an encoder for encoding an alpha-map signal for discriminating a background from an object of an input picture in motion compensation prediction (MV)+transform...
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7327786 |
Method for improving rate-distortion performance of a video compression system through parallel coefficient cancellation in the transform
A method for improving rate distortion performance of a compression system through parallel coefficient cancellation in a transform comprising the steps of (A) determining a block sum of absolute...
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7324595 |
Method and/or apparatus for reducing the complexity of non-reference frame encoding using selective reconstruction
A method for implementing non-reference frame prediction in video compression comprising the steps of (A) setting a prediction flag (i) “off” if non-reference frames are used for block...
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7324594 |
Method for encoding and decoding free viewpoint videos
A system encodes videos acquired of a moving object in a scene by multiple fixed cameras. Camera calibration data of each camera are first determined. The camera calibration data of each camera are...
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7319720 |
Stereoscopic video
Methods, devices, systems and/or storage media for stereoscopic video.
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RE39984 |
Image encoding based on judgement on prediction error
There is provided an image encode encoding apparatus which comprises a generation means for generating a prediction error from an encode encoding target pixel value and a prediction value...
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7313185 |
Sequential motion pattern representation
Systems and methods for representing sequential motion patterns are described. In one aspect, video frames are converted into a sequence of energy redistribution measurements. One or more motion...
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RE39955 |
Multiple encoder output buffer apparatus for differential coding of video information
Feedback is introduced between a video CODEC and the intended communications channel such that the characteristics of the channel are used to drive multiple video output buffers. These multiple...
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7310372 |
Motion vector encoding device and decoding device
A prediction error generating unit generates a predictive vector from the motion vectors of a plurality of adjacent blocks, and obtains a difference from a target vector. A plurality of...
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7308149 |
Picture coding method and picture decoding method
The method includes the following units: a coefficient number detecting unit ( 109 ) for detecting the number of coefficients which has a value other than 0 for each block according to the...
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7308147 |
Image processing apparatus, image recording apparatus, image reproducing apparatus, camera system, computer program, and storage medium
An image processing apparatus includes an image compression device which performs a discrete wavelet transform of pixel values for each rectangular portion to produce wavelet coefficients, and...
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7308029 |
Method and apparatus for implementing B-picture scene changes
A method and apparatus are provided for implementing B-picture scene changes. A prediction stage predicts a B-picture scene change based upon a sequence of statistical information in an encoder...
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7308028 |
Apparatus and method for generating mosaic images
The present invention relates to an apparatus and method for generating mosaic images, wherein photographed content is displayed as a still image by a digital TV display or video monitor for an...
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7305033 |
Method of encoding and decoding motion picture, motion picture encoding device and motion picture decoding device
The present invention discloses a method of encoding and decoding motion picture, a motion picture encoding device and a motion picture decoding device, which enables high-efficiency coding capable...
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7302002 |
Image encoder, image encoding method, image decoder, image decoding method, and distribution media
A group of video plane (GOV) layers in which the encoding start time is absolute time with an accuracy of one second is provided as a coded bit stream. A GOV layer can be inserted not only at the...
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7301999 |
Quantization method and system for video MPEG applications and computer program product therefor
Digital signals are converted between a first and second format by a conversion process including generating coefficients representing the digital signals. The coefficients may be discrete cosine...
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7295608 |
System and method for communicating media signals
A media streaming system for streaming media signals is provided. The media streaming system takes a library of separate and distinct CODECs that are provided as a searchable CODEC library and used...
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7292636 |
Using order value for processing a video picture
A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the...
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7289563 |
Security camera system
A security camera system having one or more monitoring cameras, each of which transmits a digital video signal after compressing/encoding, are connected to a controller via a network. In the...
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7289562 |
Adaptive filter to improve H-264 video quality
A method for reducing or eliminating coding artifacts in video pictures processed using intra block prediction methods, for example, according to the H.264 standard. The causes of the coding...
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7283952 |
Correcting model bias during quality and rate control for digital audio
An audio encoder regulates quality and bitrate with a control strategy. The strategy includes several features. First, an encoder regulates quantization using quality, minimum bit count, and...
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7280599 |
Method for sub-pixel value interpolation
A method of interpolation in video coding in which an image comprising pixels arranged in rows and columns and represented by values having a specified dynamic range, the pixels in the rows...
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7280597 |
System and method for determining coding modes, DCT types and quantizers for video coding
A method encodes a video by first measuring a variance of pixel intensities in a current frame. A number of bits to encode the current frame is assigned according to rate and buffer fullness...
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7280596 |
Apparatus detecting motion of image data and detecting method thereof
An apparatus detecting motion in image data by compressing and encoding and a method thereof. The motion detecting apparatus has a separation unit, an operation unit and a comparison unit. The...
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7277586 |
Images combination processing system, images combination processing method, and images combination processing program
An images combination processing system has a CCD or an imaging element including CCDs for picking up an image, compression processing portions for applying JPEG compression, etc. to image data in...
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