Matches 151 - 200 out of 954 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
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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...
7099390 Prediction apparatus, encoding apparatus, inverse prediction apparatus, decoding apparatus, and computing apparatus  
A candidate prediction block storage unit stores candidate prediction pixel data {“a” to “p”} (a four-by-four area) and neighboring pixel data {“A” to “D”}. A neighboring pixel...
7099389 Rate control with picture-based lookahead window  
A method of rate control using a picture-based lookahead sliding window in a dual-pass transcoder/encoder compressed video architecture extracts statistics from an input video signal according to a...
7095896 Image encoding method and image 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...
7095785 Determination of prediction direction in MPEG-4  
By noting the types (I or P) of macro blocks used for DC and/or AC prediction, one can determine the prediction direction without calculating the prediction-direction equation defined by the MPEG-4...
7092576 Bitplane coding for macroblock field/frame coding type information  
In one aspect, for a first interlaced video frame in a video sequence, a decoder decodes a bitplane signaled at frame layer for the first interlaced video frame. The bitplane represents field/frame...
7092442 System and method for adaptive field and frame video encoding using motion activity  
A method adaptively encodes a video including a sequence of images, where each image is a picture of two fields. Each image is first separated into a top-field and a bottom-field. Motion activity...
7092441 Moving pictures encoding with constant overall bit rate  
A method and apparatus control bit rates used in a moving pictures encoder, such as an MPEG standard encoder. A sequence of moving pictures is divided into segments each of which comprises one or...
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...
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...
7085321 Compression  
The invention relates to a method of controlling decoder drift for memory compression comprising the steps of providing a decoded bit-stream output of a decoder ( 79 ) and a bit-stream input to an...
7085320 Multiple format video compression  
A video compression scheme enables the user to select one of many video compression formats, including the widely-used standard video formats such as MPEG-1, MPEG-2, MPEG-4 and H.263. In one...
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...
7082164 Multimedia compression system with additive temporal layers  
A multimedia compression system for generating frame rate scaleable data in the case of universally scaleable data. Universally scaleable data is scaleable across all of the relevant...
7082163 Picture coding method, picture coding apparatus and image relaying apparatus  
A picture coding apparatus contains a rate control unit 100 , an image buffer 200 , an orthogonal transformation unit 300 , a quantizing unit 400 , a variable length coding unit 500 , a motion...
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...
7079578 Partial bitstream transcoder system for compressed digital video bitstreams  
A transcoder system for compressed digital video bitstreams comprising the three frame types: I-frames, P-frames and B-frames, is disclosed. The system includes a picture reader decoder to...
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...
7075986 Method and apparatus for providing scalable pre-compressed digital video with reduced quantization based artifacts  
A method for generating a digital motion video sequence at a plurality of bit rates uses a transitional coding source when switching between bitstreams having different bit rates during...
7075985 Methods and systems for efficient video compression by recording various state signals of video cameras  
Methods and systems for efficient video compression by recording various state signals of cameras. In accordance with the teaching of the present invention, a video camera with means to record the...
7075983 Image processing apparatus  
A quantizer scale value is detected with high accuracy. The number of effective samples of results of which DCT coefficients are quantized with each of quantizer scale values Q=1 to 31 is counted....
7072396 Motion video signal encoder and encoding method  
A motion video signal encoder maximizes image quality without exceeding transmission bandwidth available to carry the encoded motion video signal by comparing encoded frames of the motion video...
7072395 Memory control apparatus and efficient search pattern for block-matching motion estimation  
A memory control apparatus for block-matching motion estimation and an associated search pattern for processing video sequence in real-time are described in this disclosure. The motion estimation...
7068720 Coding of digital video with high motion content  
Methods for coding the current frame of a video data bit stream are provided. Methods include, for example, creating and maintaining a global codebook of historic values for the macroblocks of...
7068719 Splicing of digital video transport streams  
A mechanism for splicing advertisements, local programming and the like into a digital video transport stream is provided. In order to achieve proper splicing, an appropriate number of frames is...
7065138 Video signal quantizing apparatus and method thereof  
A residue code amount is calculated. A threshold act_thrsh corresponding to the residue code amount is obtained. A variable mb that designates a macro block is initialized to zero. The variable mb...
7062429 Distortion-based method and apparatus for buffer control in a communication system  
A method and apparatus are disclosed for controlling a buffer in a communication system, such as a digital audio broadcasting (DAB) communication system. A more consistent perceptual quality over...
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...
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...
RE39115 Method for display time stamping and synchronization of multiple video object planes  
A method of encoding a local time base embedded in the compressed data is disclosed. The local time base is encoded in two parts. The first part has a modulo time base that indicates the specific...
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...
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...
7058129 Decoding method and apparatus and recording method and apparatus for moving picture data  
A method and apparatus for recording moving picture data encoded using a prediction encoding system, in which the playback control information is recorded along with moving picture data encoded...
7054363 Variable bit rate video encoding method and device  
The DVD standard, with which a very good quality is required all along the recording step, allows for variable bit rate transmission of data, according to which more bits are spent when the...
7050503 Segment-based encoding system using residue coding by basis function coefficients  
An encoding system includes an encoder that encodes uncompressed video data to form compressed video data and a decoder that decodes the compressed video data to form at least an approximation of...
7050499 Video encoding apparatus and method and video encoding mode converting apparatus and method  
A video encoding apparatus comprises a motion vector detector to detect a motion vector of an input picture referring to a reference picture, and a predictive encoder to perform forward predictive...
7050498 Image generating method, apparatus and system using critical points  
In an image generating system or apparatus, a first storage unit stores key frames and corresponding point data therefor. A performance specifying unit determines a processing performance of a user...
7050497 Process and device for the video coding of high definition images  
The process implements a global regulation at the level of a horizontal band of the image, band consisting of panels, an encoder being assigned to each panel, as a function of a preset bit rate for...
7050494 Frame display method and apparatus using single field data  
The present invention relates to a method for displaying picture frames using single field data in interlaced encoded image data having a two-field structure. This method comprises the steps of:...
7046730 Digital image coding/decoding method and data recording medium for padding interlace and progressive images  
In the digital image padding method according to the present invention, as shown in FIG. 2 , every other pixels in an original image space corresponding to an input digital image signal are...
7046729 Bit rate control for motion compensated video compression system  
A portion of the number of bits initially allocated for encoding some of the frames of a group of pictures (GOP) is accumulated in a bit bank and is subsequently used to encode other frames that...
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...
7035453 Method and apparatus for parallel multi-view point video capturing and compression  
A method and apparatus for digital video capturing and compression supports multi-viewpoint interactive video applications. Multiple (typically hundreds of) video cameras centripetally placed in a...
7035334 Device and method for controlling image encoding, encoding system, transmission system and broadcast system  
The present invention employs a statistical multiplexing method to enable suitable assignment of a target code rate to each program data. A controller ( 3 ) acquires encoding difficulty (Di) of...
7035333 Method of reverse play for predictively coded compressed video  
Apparatus and a method of displaying a predictively coded compressed video signal in a reverse time sequence is provided. The method includes retrieving key frames of a first group of pictures...
7031386 Image transmitter  
A transmitter is capable of compressing an incoming image with a relatively small delay time and transmit the compressed image data to a receiver. Image data contains at least i pixel values of...
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...
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...
7027506 Object-based bit rate control method and system thereof  
An object-based bit rate control method and a system therefore provides a user with satisfactory quality of image by using significance of the object. The object is separated from the image, and...
7023918 Color motion artifact detection and processing apparatus compatible with video coding standards  
To detect color motion artifacts in a video frame, a motion-compensated color-distance value is compared against a threshold value. If the motion-compensated color-distance value is greater than or...
Matches 151 - 200 out of 954 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >