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6567557 |
Method for preventing dual-step half-pixel motion compensation accumulation errors in prediction-rich MPEG-2 sequences
A two-step motion prediction for MPEG-2 interpolation case-D will yield visual artifacts if not corrected. An improved MPEG-2 decoder includes a logic gate, multiplexer, and adder. When both the...
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6567556 |
Method and device for decoding images, allowing a reduced number of openings of memory pages in the prediction processing
A method and device decode compressed images, and in particular, images compressed according to the MPEG standards, and especially bidirectional images. The time period during which the memory is...
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6563954 |
Method for computational graceful degradation in an audiovisual compression system
A method of encoding a visual object. The method includes encoding the visual object to obtain compressed coded data using at least one of a plurality of different operations which can be performed...
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6563953 |
Predictive image compression using a single variable length code for both the luminance and chrominance blocks for each macroblock
The coded block parameters used to code blocks of image samples into structures called macroblocks are compressed more efficiently by exploiting the correlation between chrominance and luminance...
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6560372 |
Decoding apparatus based on pixel value motion vectors and shape signal motion vectors
It is an object to encode an image signal or a shape signal more efficiently than the prior art. As a means to accomplish the object, the change pixel detector 2 receives the input signal 1 as...
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6560365 |
Decoding apparatus and method
It is one objective of the present invention to provide an arrangement for employing peripheral pixels to perform fast decoding, and in particular to perform fast decoding while taking into account...
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6556714 |
Signal processing apparatus and method
A signal processor comprises a decoder 1 which decodes a bit stream S 10 to provide an image signal S 1 and a coding parameter S 8 , a switch SW 1 to select a destination to which the image...
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6549677 |
Data conversion method and apparatus and signal recording and reproduction apparatus utilizing same
Method and apparatus for performing data conversion between first-format encoded data in which orthogonal transform coefficients are arranged in an order of DC components and AC components from a...
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6549578 |
Moving picture synthesizing device
A moving picture synthesizing device includes a code string analyzer for analyzing the header information of moving picture code strings used for synthesis. A picture information generator is also...
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6549675 |
Compression of digital ink
Compression of digital ink is achieved by calculating second order differences between consecutive elements in the digital ink and applying the differences to a Huffman encoder to produce a...
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6549670 |
Picture decoding method and apparatus
An MPEG downdecoder is to be provided which eliminates pixel dephasing with the field DCT mode and the frame DCT mode without detracting from picture characteristics proper to interlaced pictures....
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6549666 |
Reversible embedded wavelet system implementation
A method and apparatus for performing compression and/or decompression is described. In one embodiment, the present invention comprises a system having a buffer, a wavelet transform unit, and a...
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6549673 |
Wavelet-based compression of images for storage, transmission and reconstruction using hierarchical subband decomposition
Data compression achieved by set partitioning of hierarchical trees is made more efficient by a family of related traversal schemes which act upon the tree structure and the significance values...
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6546146 |
System for interactive visualization and analysis of imaging spectrometry datasets over a wide-area network
The present invention relates to a method of viewing and processing hyper-spectral image data compressed using a VQ algorithm. According to the invention the data is compressed using a codebook of...
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6542641 |
Method and apparatus for decoding a coded representation of a digital image
The method decodes an compressed representation of a digital image. The compressed representation is in the form of a bitstream comprising in sequence encoded bitplanes each having first portions...
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6539120 |
MPEG decoder providing multiple standard output signals
A video decoder compliant with the Advanced Television Systems Standard (ATSC) includes circuitry which, when the decoder is operated in a first mode, decodes a Main Profile, High Level (MP@HL)...
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6535616 |
Information processing apparatus, method and memory medium therefor
The invention efficiently controls the method for embedding digital watermark information into digital information or detecting such digital watermark information. Also in case the digital...
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6535643 |
Method for recovering compressed motion picture for eliminating blocking artifacts and ring effects and apparatus therefor
The present invention relates to a method for recovering a compressed image for an image processing technique and an apparatus therefor. In the present invention, a cost function is defined in...
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6529633 |
Parallel difference coding method for lossless compression and real time decompression
A block based hybrid compression method where the input page is classified as SOLID, TEXT, SATURATED TEXT or IMAGE type, and the compression method most appropriate for each class is chosen on a...
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6529636 |
Picture coding device and picture decoding device
If coding is carried out on the block basis on subband coding of an image, the hierarchical characteristic which a subband image inherently has would be lost. Thus, efficient coding is to be...
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6522326 |
Decompression of quantized compressed three-dimensional graphics data
Three-dimensional compressed geometry is decompressed with a unit having an input FIFO receiving compressed data bits and outputting to an input block state machine and an input block, whose...
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6522790 |
Method and apparatus for merging images
Two document images which have been compressed using the JBIG-2 standard for facsimile applications so as to include a plurality of index numbers, one or more positions in each image associated...
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6519052 |
Image processing method and apparatus to select a data compression method according to a size of an output image
An image processing apparatus for inputting image data from an external image input device and outputting the inputted image data to an external image output device after processing the data, the...
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6516094 |
Digital image coding method and digital image decoding method
A digital image coding method comprises the steps of: dividing an image into plural regions each having an arbitrary shape, subjecting an image signal of a required region of the plural regions to...
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6516095 |
Decoding apparatus for shape signal
It is an object to encode an image signal or a shape signal more efficiently than the prior art. As a means to accomplish the object, the change pixel detector 2 receives the input signal 1 as...
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6510248 |
Run-length decoder with error concealment capability
A run-length based decoder for decoding compressed image data while allowing error to be contained with the length of a code word. The decoder includes: (a) a shifter for outputing Q+1 number of...
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6507672 |
Video encoder for digital video displays
An improved multimedia encoder having features advantageous for use in a computer system. These features provide for the reduction of bandwidth and storage requirements, the enhancement of noise...
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6501863 |
Image coding apparatus, image coding method, image decoding apparatus, image decoding method and transmission medium
The present invention relates to an image coding apparatus/method, an image decoding apparatus/method, and a transmission medium, which conduct high-efficiency coding or decoding of an image, and...
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6501862 |
Picture information processing method and apparatus and entertainment apparatus
A game machine for high-speed execution of iterated transformation decoding based on a drawing command or data loaded from a recording medium. The drawing command, fractal transformation parameters...
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6487312 |
Method of isomorphic singular manifold projection still/video imagery compression
Methods and apparatuses for still image compression, video compression and automatic target recognition are disclosed. The method of still image compression uses isomorphic singular manifold...
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6487311 |
OCR-based image compression
A method for compressing a digitized image of a document using optical character recognition (OCR). The method includes performing optical character recognition (OCR) on the digitized image,...
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6473526 |
Image processing system and control method of the same, image processing apparatus and control method of the same, and computer readable memory
In an image processing apparatus for managing hierarchical encoded image data by using a server/client system, a server machine transmits encoded image data in one layer designated in units of...
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6473528 |
Shape adaptive technique for image and video compression
A method for wavelet encoding image-representative signals, including the following steps: identifying shape information of a shape in the image; within rows of pixels of a shape, performing...
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6466698 |
Efficient embedded image and video compression system using lifted wavelets
An image compression system for implementing a zerotree wavelet compression algorithm. The compression system uses a wavelet based coding system which takes advantage of the correlation between...
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6463179 |
Image compression and decompression based on a flat pixel group level, group pixel coorindinate positions, and the number of pixels for the group
An encoding apparatus whereby image signals provided in units of frames, each having a plurality of pixels, are divided into macro groups, and the pixels in each macro group are combined, forming a...
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6459812 |
Picture encoding and/or decoding apparatus and method for providing scalability of a video object whose position changes with time and a recording medium having the same recorded thereon
An apparatus and method for obtaining scalability of a video object (VO) whose position and/or size changes with time. The position of an upper layer picture and that of a lower layer picture in an...
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6456743 |
Methods and devices for processing a set of data
A method and device that operates in accordance with the method are provided for primary processing a set of data (IM, f) representing physical quantities. The method comprises a step of...
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RE37858 |
Motion compensation predicting encoding method and apparatus
A motion compensation predicting coding apparatus includes a motion detector for comparing pixel data in an image signal with pixel data of the previous image signal to generate a motion vector....
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6453071 |
Data communication apparatus, method and system and programs for data communication process stored in computer readable storage medium
In a data communication apparatus for encoding information data by using a predetermined encoding method, encoded information data is transmitted isochronously with a predetermined communication...
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6452968 |
Circuitry and apparatus for converting a decoded image with a macroblock/raster scan conversion capability
Decoded image converting circuitry includes a display image compression circuit to which image data are input in the form of consecutive macroblocks. The compression circuit compresses each...
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6452610 |
Method and apparatus for displaying graphics based on frame selection indicators
A method for displaying graphics in a computer system. In one embodiment, the method includes a step of receiving a stream of data into the main memory of the computer system. This stream of data...
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6445829 |
Joint cosine transforming and quantizing device and joint inverse quantizing and inverse cosine transforming device
Each of the discrete cosine transforming (DCT) unit of a joint cosine transforming and quantizing device, and the inverse discrete cosine transforming (IDCT) unit of a joint inverse quantizing and...
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6442302 |
Rotated read-out of JPEG compressed images
This invention is a method and apparatus for processing compressed digital images. More particularly, this invention relates to methods and apparatus which accomplish rotation in conjunction with a...
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6434273 |
Method for reconstructing a bi-level image from a low quality discrete transform image
The image reconstruction method generates higher quality reconstructed images from compression of a bi-level image. The method includes thresholding to force pixels of the starting image to be...
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6429838 |
Correlation modulating apparatus
A correlation modulating apparatus that is adapted to modulate high frequency data into low frequency signals. In the apparatus, a register lists in parallel a data bit stream by at least two bit...
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6427029 |
Image signal processing method and device, and storage medium
An image compression and restoration technique may be used as a substitute for JPEG. In this technique, orthogonal transforms are performed on the original image signals without interpolation,...
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6427026 |
Video decoder and corresponding method
A decoder has a first memory for storing a coded first image. The image is stored in the first memory until it has been decoded at least twice. The results of the decoding operations can be...
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6418244 |
Border-less clock free two-dimensional barcode and method for printing and reading the same
Inventive two-dimensional barcodes, each having encoded digital information in a bitmap representing preferably randomized encoded data bits, are printed onto a printed medium. Preferably, error...
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6418165 |
System and method for performing inverse quantization of a video stream
A system and method for performing a coefficient reconstruction in a decoder. The method comprises receiving a transmitted coefficient of a first block. The method also comprises retrieving a...
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6416410 |
Data compression/decompression based on pattern and symbol run length encoding for use in a portable handheld video game system
Loss-less data compression/decompression especially useful in a limited resource environment such as a handheld portable video game system allows graphics and/or attribute data to be efficiently...
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