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7050639 |
Image data compression employing multiple compression code tables
An image data compression and decompression technique applies one or more compression code tables to optimally compress an image data stream. The compression code tables are established in...
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7046856 |
Accelerated predictive-transform
The present invention is drawn to a method for digital image modeling in which the digital image is divided into digital image blocks. First, a coder input vector of the digital image blocks is...
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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...
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7031387 |
B picture mode determining method and apparatus in video coding system
A B picture mode determining method and apparatus in a video coding system includes the steps of: setting sum of absolute difference (SAD) initial values of a 4×4 and 16×16 intra prediction mode,...
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7031542 |
Encoding rate controlling apparatus and information encoding apparatus
The encoding rate controlling apparatus ( 9 ) is provided with a controlling device ( 9 a , 9 b ) for performing a control for the encoding rate by changing a quantization scale code for quantizing...
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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...
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7023919 |
Method for coding motion vector using 2-dimensional minimum bitrate predicting technique
A method for coding a motion vector using a 2-dimensional minimum bitrate predicting technique is disclosed. A mode information (MODE) commonly adopted to the factors ‘X’ and ‘Y’ are...
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7020341 |
Method, apparatus and computer program product for image data compression and decompression capable of high-speed processing
A compression and decompression apparatus, method and computer program product, wherein compression and decompression of image data is performed via a combination of two-dimensional reversible...
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7020340 |
Methods for compressing and decompressing data
In methods for compressing data, when differences between two adjacent data among a series of N data, where N is a positive integer, are all less than a reference value, delta data values are...
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7020202 |
Systems for MPEG subsample decoding
Decimating MPEG or other video data by subsampling the output of an inverse discrete cosine transform (IDCT) module. The decimation process is useful for reducing the volume of data that must be...
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7020192 |
Method of retrieving video picture and apparatus therefor
An apparatus for retrieving a video picture includes a decoder section for decoding a coded bit stream of video picture data representing an arbitrary shape object and including shape information...
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7016544 |
Digital image encoding and decoding method and digital image encoding and decoding device using the same
A method for decoding a bitstream data obtained by encoding a target image comprises the steps of:
(a) extracting from the bitstream data, coordinates point date indicating frame coordinates...
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7013048 |
Method and apparatus for coding a digitized original picture and method and apparatus for decoding a digitized coded picture
The discrete cosine transform of the prediction error is not necessarily calculated, rather the DCT of the original picture to be transmitted and the DCT of the temporally preceding reconstructed...
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7012958 |
Partition coding method and device
The invention relates to a method of coding segmented pictures, or partitions, divided into homogeneous regions. Said method, called intra-mode coding process, comprises, for each successive...
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7010168 |
Apparatus for prediction coding or decoding image signal and method therefor
A hardware structure for adaptively prediction coding an image signal using spatial correlation and a method therefor are provided. The prediction coding apparatus has a packet change detection...
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7010036 |
Descriptor for a video sequence and image retrieval system using said descriptor
The present invention relates to a descriptor for the representation, from a video indexing viewpoint, of motions of a camera or any kind of observer or observing device within any sequence of...
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7006702 |
Image coding device
The image coding device comprises data adding means for adding specific data to input image data at the end of image data, and arithmetic coding unit not issuing remaining output code of code...
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6999627 |
Deterministic prediction in an image processing system
Embodiments of the present invention relate to deterministic prediction in an image processing system. One aspect relates to an image processing system having a deterministic prediction decode unit...
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6999187 |
Image forming apparatus, communication system for maintenance of image forming apparatus, maintenance service method of image forming apparatus, and medium storing information to be used in maintenance
As information for use in the maintenance of an image forming apparatus, information indicating an error occurrence portion, machine status information, operation log information, and the like is...
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6993197 |
Device and method for encoding DPCM image
Device for encoding a DPCM image is provided. A smoothness test is performed on an original image at a smoothness tester. A linearly predicted value of the original image is obtained at a linear...
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6990242 |
Adaptive encoding and decoding of bi-level images
A system and process for encoding and later decoding of bi-level images that does not use arithmetic coding, but whose performance is close to that of state-of-the-art coders such as JBIG, JBIG-2,...
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6983016 |
Method for detecting errors in video information
A method for detecting errors in an image signal. The image signal is produced by dividing an image into image blocks, and coding is performed in which at least predictive coding is performed on an...
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6975680 |
Macroblock mode decision biasing for video compression systems
A method, system, and computer program for coding video frames in a video compression system. One aspect includes automatically scaling coding mode biases as a function of the number of bits of...
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6975770 |
Image compression and decompression with predictor selection based on embedding data
An embedded coding unit for embedding first data in second data, and outputting coded data, comprises a selecting unit, predicting unit, and prediction margin of error computing unit. The selecting...
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6973216 |
Image coding apparatus and method
A pixel value change processing section corrects the value of a current pixel in an input image so that the size of a code produced by a coding processing section is reduced, and outputs a changed...
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6970506 |
Systems and methods for reducing frame rates in a video data stream
The present invention is related to video encoding. In an embodiment, a sequence of frames is received. For each frame in at least a portion of the sequence of frames, a corresponding mean of...
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6970510 |
Method for downstream editing of compressed video
In a MPEG or other video system, editing is performed using “independently coded regions” (ICRs) embedded into an input video signal. These regions facilitate quick editing and formatting of a...
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6965647 |
Robust time domain block decoding
A method for robust time domain block decoding is disclosed. In one embodiment, the method includes receiving a block of transform domain coefficients, detecting errors in one or more transform...
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6963605 |
Method for estimating the motion between two digital images with management of mesh overturning and corresponding coding method
The invention relates to a method for estimating the motion between two digital images and to the use of this method for coding images. The aim of the method is to eliminate the disturbances caused...
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6961472 |
Method of inverse quantized signal samples of an image during image decompression
Briefly, in accordance with one embodiment of the invention, a method of inverse quantizing quantized signal samples of an image during image decompression includes the following. A process to...
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6956904 |
Summarizing videos using motion activity descriptors correlated with audio features
A method for summarizing a video first detects audio peaks in a sub-sampled audio signal of the video. Then, motion activity in the video is extracted and filtered. The filtered motion activity is...
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6947483 |
Method, apparatus, and system for managing data compression in a wireless network
According to one aspect of the present invention, a method is provided in which an access point and a mobile unit associated with the access point may optionally transmit compressed data to each...
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6947601 |
Data transmission method, apparatus using same, and data transmission system
A data transmission method able to maintain the quality of a transmitted image substantially same as that of one's own image and an apparatus using the method and a data transmission system,...
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6944346 |
Efficiency FGST framework employing higher quality reference frames
A method and apparatus for coding video includes constructing motion-compensated extended reference frames from at least portions of temporal residual image frames. The motion-compensated extended...
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6944347 |
Image compression and restoring method for binary images
The present invention relates to the image compression and restoring method for binary images that can be used in binary image equipment including printers. In the present invention, an image is...
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6931067 |
Apparatus and method for image coding using tree-structured quantization based on wavelet transform
An apparatus for image coding using tree-structured vector quantization based on a wavelet transform and a method therefor are provided. The apparatus for image coding using a tree-structured...
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6931065 |
Apparatus and method for motion detection of image in digital video recording system using MPEG video compression
Provided are apparatus and method for precise motion detection in a digital video recording (DVR) system using a Moving Picture Expert Group (MPEG) video compression technique and a...
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6925125 |
Enhanced aperture problem solving method using displaced center quadtree adaptive partitioning
The disclosed method provides a new resolution of the aperture problem, which is one of the basic problems present in motion estimation technology. The method constitutes a resolution of this...
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6907079 |
Deblocking filter conditioned on pixel brightness
An encoder, decoder, and corresponding method are disclosed for encoding pixel data as a plurality of block transform coefficients and decoding encoded block transform coefficients to provide...
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6907071 |
Selective prediction for intra-coding video data block
In a method of video data compression a video frame in a sequence of frames is divided into a number of macroblocks, a particular macroblock being adjacent to a number of previously coded...
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6898322 |
Coding method, coding apparatus, decoding method and decoding apparatus using subsampling
A coding apparatus includes: a context generator generating a context signal from a reconstructed symbol; a predictor generating a prediction signal indicating a prediction value which is a...
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6882687 |
Compressed image data reproducing apparatus and method thereof
A compressed image data reproducing apparatus and a compressed image data reproducing method, in which a smooth reproduced image and a non-linear editing reproduction can be realized at the time...
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6876756 |
Container security system
A container security system comprising a container with a first section and a second section; a touch pad for fingerprint identification attached to the outside of the first section; a sensor with...
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6873737 |
Image encoding system, image decoding system and methods therefor
A system and method are provided for realizing high speed and high efficiency in compression of image data having periodicity. The present invention includes the following: an image input unit to...
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6868186 |
Visual lossless image compression
An image compression method is provided including separating an image into a plurality of color channel sub-images processing each of the color channel sub-images by sub-sampling the sub-image...
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6865298 |
Compound document compression based upon neighboring pixels
A method for compression of compound images. The method determines a classification for a current pixel based upon its causal neighbors and codes the pixel according to a mode determined by the...
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6864813 |
Arithmetic decoding method and an arithmetic decoding apparatus
An arithmetic decoding apparatus is provided that carries out complete pipeline processing. Fluctuations in the pipeline caused by occurrence of the normalization are resolved by using a...
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6864997 |
Picture encoding apparatus and method
A picture encoding apparatus and the method in which the quantization step width of the lower hierarchy data having a resolution higher than that of the upper hierarchy data is determined for each...
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6862318 |
Image data encoding device
Introduced in an image data encoding device is a logic-memory combined chip in which a memory device and a signal processing device are combined. A logic part and a memory part can be connected to...
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6853753 |
Image sequence coding method
Image quality deterioration degree estimation (step S 2 ) is made on the basis of quantization error between decoded image of coded data and input image and estimated value of image quality...
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