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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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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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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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7308145 |
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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7308144 |
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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7308143 |
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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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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7305134 |
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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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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7295611 |
Methods and apparatus for decoding and displaying different resolution video signals
Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution...
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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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7277486 |
Parameterization for fading compensation
Techniques and tools for performing fading compensation in video processing applications are described. For example, during encoding, a video encoder performs fading compensation using fading...
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7272791 |
Device, method and system for multimedia content adaptation
The invention concerns a device receiving data associated with a first profile and generating data associated with a second profile, comprising means to extract facts associated with the first...
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7272185 |
Moving picture encoding apparatus
Data of both MPEG-2 and MPEG-4 is generated simultaneously with a small circuit scale and a small power consumption. A moving picture encoding apparatus for encoding a moving picture through...
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7272182 |
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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7269221 |
Encoding system using motion vectors to represent frame-to-frame changes, including motion vector grouping for coding or processing
Motion vectors encode for differences between segments of a reference frame and pixels of a current frame being encoded when the current frame is a nonkey frame. The motion vectors are encoded by...
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7269220 |
Adaptive motion detection and control
A motion detector ( 300 ) detects motion of images represented by video pixels by providing a memory ( 19 ) arranged to store first pixels processed during a first time period. The motion detector...
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7266149 |
Sub-block transform coding of prediction residuals
Techniques and tools for sub-block transform coding are described. For example, a video encoder adaptively switches between 8×8, 8×4, and 4×8 DCTs when encoding 8×8 prediction residual blocks;...
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7263128 |
Triple-buffering method for overlapped motion compensation in a video decoder
A method of improving performance within video decoders subject to the execution of overlapped motion compensation. The method utilizes a triple-buffering approach to achieve rapid data transfers...
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7262719 |
Fast data stream decoding using apriori information
Methods and systems for improving performance of data decoding using apriori information about the data steam. In one aspect a decoder may determine the degree of lossiness inherent in the data or...
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7257162 |
Hypothetical reference decoder for compressed image and video
One method for analyzing a bitstream having a plurality of compressed pictures comprises computing an initial arrival time and a final arrival time of a compressed picture, wherein the initial...
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7257160 |
Method and apparatus of picture display
A method and an apparatus of picture display. The invention displays the first picture and the second picture and displaying at least one virtual picture in between the first and the second...
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7251279 |
Apparatus of motion estimation and mode decision and method thereof
An apparatus and method of motion estimation and mode decision includes a candidate vector group generation unit generating a candidate vector group including a motion vector of an adjacent image...
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7251278 |
Procedure and system for performing motion estimation
A method and system for performing motion estimation in video image compression is provided. In the method and system, an associative memory device is used in motion estimation, and the group of...
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7251275 |
Methods and apparatus for statistical multiplexing during dual pass encoding
Methods and apparatus for statistical multiplexing in a dual pass encoding scheme are provided. A first pass encoder encodes alternate slices of anchor frames as I-slices and P-slices respectively...
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7248257 |
Low bandwidth transmission of 3D graphical data
A graphical data-compressor for compressing received arbitrary graphical data for subsequent transmission; where the graphical data-compressor comprises an input for receiving the received...
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7245661 |
Transcoder and method of transcoding
A transcoder and a method of transcoding which reduces computational requirements without picture deterioration. A mode decision unit decides a mode of a scaled output macro block based on an area...
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7245659 |
Image encoding method and apparatus, image decoding method and apparatus, and image processing system
A method and an apparatus improving the coding efficiency by representing encoded data in a compact form by means of a pattern matching technique. A waveform vector similar to a partial signal...
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7242715 |
Systems and methods for encoding redundant motion vectors in compressed video bitstreams
The invention is related to methods and apparatus that encode redundant motion vectors for predictive-coded visual object planes (P-VOPs) to increase the robustness of transmitted video signals....
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7239743 |
Methods and apparatus for texture compression and computer program product therefor
A method for texture compressing images having a plurality of color components (R, G, B), includes decomposing the images in sub-blocks each including only one color component. At least one first...
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7236634 |
Image encoding of moving pictures
In an encoding method of moving pictures which generates a predictive picture for a current picture based on a reference picture and a motion vector, a macroblock is divided into subblocks. In each...
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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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7236524 |
Methods and systems for image intra-prediction mode communication
Embodiments of the present invention relate to methods and systems for communicating pixel prediction modes between video encoders and decoders.
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7236523 |
Method for performing motion estimation in video encoding, a video encoding system and a video encoding device
A method for performing video motion estimation in video encoding, in which a video signal consists of frames comprising blocks. In the method a combined comparison value is calculated between a...
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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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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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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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