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7613351 |
Video decoder with deblocker within decoding loop
Methods and systems for processing an encoded video stream are disclosed. Aspects of the method may comprise generating a plurality of temporal or spatial prediction pixels based on mode...
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7613345 |
Image coding apparatus and image decoding apparatus and their control methods, and computer program and computer-readable storage medium
An image coding apparatus for efficient coding on image data having discrete pixel values such as a CG image or a limited color image as well as a natural image where pixel value changes are mild....
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7606427 |
Efficient rate control techniques for video encoding
This disclosure describes rate control techniques that can improve video encoding. In particular, the described rate control techniques exploit relationships between the number of bits encoded per...
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7599567 |
Image encoding apparatus and image encoding method
In an image encoding apparatus, pattern image cut-out means cuts out partial regions of an image of image data and generates pattern images. At the same time, the pattern image cut-out means...
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7599566 |
Image feature identification and motion compensation apparatus, systems, and methods
Apparatus, systems, and methods disclosed herein may estimate the magnitude of relative motion between a scene and an image capture device used to capture the scene. Some embodiments may utilize...
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7599565 |
Method and device for transform-domain video editing
A method and device for editing video data to achieve a video effect in a video sequence. From an encoder, transform coefficients of part of the video sequence are obtained. The transform...
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7596279 |
Image encoding device, image decoding device, image encoding method, image decoding method, image encoding program, and image decoding program
Variable-length encoder 16 feeds a CBP as an input symbol H 1 to variable-length code output part 30 . Coded symbol memory 31 supplies CBPs in neighboring blocks as coding map table reference...
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7593464 |
Information processing apparatus and method, and program storage medium
An inputted digital signal of a first format (DV video signal) is restored to a variable-length code by having its framing cancelled by a de-framing section 11 , then decoded by a variable-length...
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7590297 |
Pixel data compression and decompression method and device thereof
The present invention discloses a method for compressing and decompressing pixel data and the device thereof. The method comprises receiving current pixel data from a preprocessor and comparing the...
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7590296 |
Image coding apparatus and method in which a loop filter performs a filtering process on each image block of an image
An image coding apparatus includes an image characteristic determination unit configured to divide input image data into image blocks each including a plurality of pixels, and to determine a...
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7590178 |
Method of multiplexing a number of video signals with a compressor
The present invention relates to a method of and an apparatus for multiplexing a number of video signals, in which to save circuits for compressors the video signals are reduced in their...
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7587092 |
Layer-based context quantization with context partitioning
Conditioning states are selected for coding a source from a plurality of potential conditioning states. The potential conditioning states represent a series of context events, such as a plurality...
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7587090 |
Method and device for condensed image recording and reproduction
A method for decoding coded image data, and which includes determining whether a property type of the image data is a first coding type or a second coding type, in which the first coding type of...
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7583731 |
Picture coding method and picture decoding method
A picture coding apparatus ( 300 ) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a...
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7580583 |
Method and device for condensed image recording and reproduction
A method for decoding coded image data, and which includes determining whether a property type of an image data is a first coding type or a second coding type, in which the first coding type of the...
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7580582 |
Methods for decoding corrupt JPEG2000 codestreams
The present invention provides a method for decoding corrupt codestreams for encoded digital imagery and video and, in particular, JPEG2000 codestreams with improved error resilience properties....
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7580458 |
Method and apparatus for video coding
In uniform superposition of two predictions toward a weighted superposition, such as in coding B frames, weighting is based on reliability of a reference picture used for determination of the...
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7577305 |
Spatial extrapolation of pixel values in intraframe video coding and decoding
Techniques and tools for spatial extrapolation of pixel values in intraframe video encoding and/or decoding are described. For example, to predict the pixel values for a block of pixels, a video...
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7577304 |
Method and device for condensed image recording and reproduction
A method for decoding coded image data, and which includes receiving the coded image data, in which some of the coded image data includes identifier information of a reference image for specifying...
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7577303 |
Method and device for condensed image recording and reproduction
A method for decoding coded image data, and which includes receiving the coded image data, in which some of the coded image data includes identifier information of a reference image for specifying...
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7574063 |
Image coding method and apparatus
To reduce the computation cost of rate/distortion optimization in image compression, the rate/distortion gradient of a frame of interest is classified to m categories. A category information...
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7570817 |
Signal compression and decompression
A method of data compression, for example for image or audio signals, comprises encoding the data using a transform such as a wavelet transform or DCT, and transmitting only a predefined number of...
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7567719 |
Method for encoding images, and an image coder
The invention relates to a method for encoding a digital image, in which method the digital image is divided into blocks (C, L, U, UL, UR). In the method a spatial prediction for a block (C) is...
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7567718 |
Digital image context compression
A device (D) for compressing digital image data by wavelet transform, the device including a processor (PM) having i) a module (M 1 ) for transforming image data into wavelet coefficients...
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7565020 |
System and method for image coding employing a hybrid directional prediction and wavelet lifting
A system and method that provides an efficient scheme to code images and video by exploiting spatial correlations within an image by employing hybrid directional prediction and lifting wavelet...
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7558321 |
Method of deriving a motion vector of a bi-predictive block based on a list 1 motion vector of a co-located block in a reference picture
In one embodiment, the method includes selecting the list 1 motion vector of the co-located block in a first list 1 reference picture as the motion vector for deriving list 0 and list 1 ...
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7551674 |
Using order difference for calculating motion vector
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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7548584 |
Using order value for computing motion vector
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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7535960 |
Moving picture transmission apparatus, moving picture reception apparatus, and moving picture data record medium
In a moving picture data structure having a structure comprising I pictures (intraframe coded image) and P pictures (interframe forward predictive coded image), a P′ picture of a forward...
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7532764 |
Prediction method, apparatus, and medium for video encoder
A prediction method, apparatus, and medium including computer readable code, for calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a...
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7532763 |
Method and a device for processing bit symbols generated by a data source; a computer readable medium; a computer program element
A method for processing bit symbols generated by a data source, in particular a video, still image or audio source, comprising the following steps of constructing a plurality of bit-planes from the...
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7526028 |
Motion estimation method and apparatus for video data compression
This invention provides efficient method and apparatus of the motion estimation for the video compression. A storage device saving MVs of a partial or an entire frame and the prediction modes are...
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7523234 |
Motion estimation with fast search block matching
A video encoder and corresponding method are provided for encoding video signal data for an image block and a particular reference picture index to predict the image block, where the encoder...
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7515760 |
Multiple picture-data compression system
A picture-data compression system for compressing inputted multiple picture data includes a storage device that stores the multiple picture data; a selection controller that writes the multiple...
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7502518 |
Apparatus and method for coding image based on level of visual attention and level of perceivable image quality distortion, and computer program product therefor
An apparatus for coding an image includes a setting unit that sets quantization width for each coded block of an image frame of image data. The apparatus also includes a visual attention...
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7502517 |
Image coding apparatus including a coded quantity prediction expression retaining unit
The image coding apparatus is provided to realize image coding with little calculation quantity and through rate distortion optimization thereby maintaining a favorable image quality. The image...
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7499593 |
Video decoding apparatus
A video decoding apparatus of decoding a code bit sequence obtained by encoding a block composed of M×N (M and N are natural numbers) pieces of image data, is provided. The number of pieces of...
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7492952 |
Moving picture coding method and moving picture decoding method
According to a picture coding method of the present invention, a coded picture identified by a picture number is stored, as a reference picture, into a storage unit; commands indicating...
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7486832 |
Method and device for condensed image recording and reproduction
A method for decoding image data, and which includes determining if the image data is a predictive coded image data or not, where the predictive coded image data includes specifying information for...
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7483586 |
Image compression apparatus, image expansion apparatus, image forming apparatus, image compression method, image expansion method and storage medium
An image compression apparatus compresses image data by carrying out a parallel processing for every image pattern made up of a plurality of bits. The apparatus includes a first unit for obtaining...
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7483576 |
System and method for decoding video
A method for decoding a compressed video file comprises receiving the encoded video file, wherein the encoded video file includes a plurality of encoded video data tables and a plurality of...
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7483565 |
Image processing device and method, learning device and method, recording medium, and program
With the present invention, data continuity is used at the time of converting an input image into high-quality image data with higher quality than the input image data, to obtain processing results...
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7477791 |
Image processing device, method and recording medium for compressing image data
An image processing device for compressing image data using conversion to spatial frequency components may include a dividing section that divides the image data into a plurality of pixel blocks...
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7477690 |
Macroblock level adaptive frame/field coding for digital video content
A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of...
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7477688 |
Methods for efficient bandwidth scaling of compressed video data
The present invention relates to systems and methods for efficient bit rate alteration of a bitstream to match an available channel capacity. The efficient bit rate alteration includes selective...
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7471724 |
Method and apparatus for adaptive multiple-dimensional signal sequences encoding/decoding
A hybrid block matching prediction and transform based n dimensional signal sequence encoder, including an encoder motion estimator, having a cost function. A first embodiment includes an...
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7466867 |
Method and apparatus for image compression and decompression
An image compression method for compressing groups of pixel data, including the following steps: MSB portions and LSB portions of the pixel data are compressed separately. Further, the LSB portions...
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7466865 |
Method and device for analyzing video sequences in a communication network
The invention relates to a method of analyzing at least one video sequence present on at least one sending apparatus, in a communication network also comprising at least one receiving apparatus,...
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7463779 |
Method of compressing digital ink using linear prediction
A method of compressing digital ink input including a sequence of strokes is provided. Each stroke is represented as a series of digital words representing x and y co-ordinates. The compressed...
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7463778 |
Motion estimation for compressing multiple view images
Systems and methods of estimating motion for compressing multiple view images are described. In accordance with a machine-implemented method of encoding a target image of a scene captured at a...
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