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8897586 |
Dynamic generation of a quantization matrix for compression of a digital object
Some aspects of the disclosure relate to a compression technique that can permit determining dynamically a satisfactory quantization matrix based at least on properties intrinsic to a digital... |
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8837006 |
Pre-processing of image data for enhanced compression
Embodiments herein provide for a pre-processing stage or mechanism for enhancing data compression of an image by splitting or separating the color channels for pixels into planar data sources.... |
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8644626 |
Method for storing and processing image sequence and method for compressing, storing and processing image sequence
The present invention relates to a method for storing an image sequence and a method for compressing, storing an image sequence. The method for storing an image sequence comprises the following... |
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8264715 |
Approach for implementing locked printing with remote unlock on printing devices
An approach is provided for implementing locked printing on a printing device with remote unlock. The printing device includes a locked print process that is configured to examine print data... |
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8243340 |
Pre-processing of image data for enhanced compression
Embodiments herein provide for a pre-processing stage or mechanism for enhancing data compression of an image by splitting or separating the color channels for pixels into planar data sources.... |
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8184633 |
Automated interoperability assessments based on iterative profling and emulation of SIP or T.38 fax-relay enabled devices
A system for and method of efficient interoperability assessment based on automated Behavioral Profiling and Emulation of SIP or T.38 Fax-relay Enabled Devices, for example, for profiling and... |
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8171169 |
Method and apparatus for updating a graphical display in a distributed processing environment
A system and method for updating a display unit remotely located from a computing system are described. The method includes copying display information from a video buffer of a computing device... |
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8165198 |
Apparatus and method for performing video decoding processes in parallel
An apparatus and a method for performing video decoding processes in parallel are provided. The method is adapted for utilizing a first cluster and a second cluster of a processor to perform the... |
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8135226 |
Image encoder, image encoding method, image decoder, and image decoding method
In an image encoder, a first quantization section which is selected when normal image quality is required performs quantization by dividing a wavelet transformation coefficient by a quantization... |
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7974480 |
Universal fixed-pixel-size ISP scheme
An Image Signal Processing unit (ISP) has at least one fixed-size line buffer which is smaller than the width of the image buffer. To handle the image data, the image buffer is divided into... |
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7787698 |
Sign coding and decoding
Embodiments of the invention provide an instruction that computes the horizontal and vertical values (H,V) based upon the predefined equations. Based upon the horizontal and vertical values (H,V)... |
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7756051 |
Content distribution using network coding
A content distribution mechanism that relies on cooperative desktop PCs to distribute content is disclosed. The mechanism distributes content in a robust manner by allowing at least one... |
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7738722 |
Technique for adaptive de-blocking of block-based film grain patterns
Reduction in the blockiness of a simulated film grain block can be achieved either by the use of adaptive downscaling or adaptive deblocking filtering to adjust the intensity of the pixels at the... |
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7684088 |
Method for preventing counterfeiting or alteration of a printed or engraved surface
The invention describes a process to prevent counterfeiting or alteration of a printed or engraved surface, characterized by the incorporation of a signature of the form of a digital mark into... |
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7657108 |
Encoding of digital data combining a plurality of encoding modes
A method of encoding a set of data representing physical quantities includes the steps of dividing the set of data into subsets, calculating a first encoding cost for each subset using a first... |
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7602974 |
Universal fixed-pixel-size ISP scheme
An Image Signal Processing unit (ISP) has at least one fixed-size line buffer which is smaller than the width of the image buffer. To handle the image data, the image buffer is divided into... |
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7468803 |
Image processing apparatus and image processing method
Provided are an image processing apparatus and image processing method capable of processing image data as packet data, and compressing the image data in real time to a data amount within the... |
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7463780 |
Image encoder, image encoding method, image decoder, and image decoding method
In an image encoder, a first quantization section which is selected when normal image quality is required performs quantization by dividing a wavelet transformation coefficient by a quantization... |
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7450774 |
Method of changing bit rate by changing codeword of compressed image bit stream
An apparatus and a method of changing a bit rate of a compressed image bit stream by changing a codeword so as to easily change the bit rate and reduce a changing loss. The apparatus for changing... |
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7433531 |
Image pickup apparatus and method
The present invention relates to an image capturing apparatus and method in which the image recording time is reduced and the memory capacity required for compression is also reduced. A... |
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7376280 |
Video encoding and decoding
A method for encoding video with a two-dimensional (2D) transform separable to two one-dimensional (1D) transforms. The method receives an array of values for a sub-section of an image, performs a... |
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7372600 |
Color facsimile device with data recompressing capability
JPEG data is efficiently recompressed and transmitted to a remote color facsimile device. Before transmission of recompressed JPEG data, an anticipated transmission time is displayed for enabling... |
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7302107 |
JPEG encoding for document images using pixel classification
The invention provides a system and method for JPEG encoding an image that includes variable quantization for each block, depending upon the classification of each block, which is dependent on the... |
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7206098 |
Method for avoiding print buffer underrun
In order to avoid print buffer under-run a printing method involves a printer printing a rendered first page of print data while another page is rendered in a connected computer. Simultaneously, a... |
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7171045 |
System and method for determining a natural color depth of a digital image
A system and method for determining a natural color depth of a digital image is described. Color distances between each pair of colors in a color palette stored for a digital color image are... |
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7145696 |
Print data compression method and printer driver
A printer driver software product is provided for execution by a computer to produce compressed page data corresponding to a page layout. The driver includes instructions to generate... |
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7099040 |
Method for enabling a client to specify the characteristics of an image to be downloaded from a server
A method for serving an image from a server to a client, e.g., a computer having a browser or other graphics viewing engine. The user of the client first specifies a set of one or more bitmap... |
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7068398 |
System and method for efficient tile generation from complex raster data
A system and method for accepting raster data from a Postscript or equivalent image data generator, identifying portions of the raster image which contain continuous tone data and linework data,... |
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7065252 |
System and method providing improved data compression via wavelet coefficient encoding
A data compression system is provided in accordance with the present invention. The system includes a scanning component which scans at least a portion of a transformed image. The scan is... |
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7062088 |
Variable lossy compression
Methods and apparatus for generating a compressed image from a source image by compressing the source image using a dictionary based lossy compression algorithm that regionally varies the amount... |
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6992788 |
Image processing apparatus and method, and storage medium
The present invention efficiently compresses image data, and stores and manages the compressed data. Image data is compressed in tile unit having predetermined pixels and data packing is... |
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6985635 |
System and method for providing a single-layer video encoded bitstreams suitable for reduced-complexity decoding
A method and system of reducing the computation load of an MPEG decoder by changing the encoding algorithms in a video-processing system are provided. During an encoding mode, a stream of data... |
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6961475 |
Context model access to memory based on run and skip counts and context model skipping
A method and apparatus for coding and decoding information is described. In one embodiment, the apparatus comprises a memory and decoding hardware. The memory stores run counts and/or skip counts... |
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6934420 |
Wave image compression
A method of image compression comprises the steps of recursively transforming a image using a Discrete Wavelet Transform. This creates a plurality of levels including at least a first level,... |
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6792157 |
Image encoding apparatus and quantization characteristics determining apparatus
Images are to be efficiently and easily encoded while suppressing block distortion and pseudo-contour generation. A quantization characteristics determining unit receives pixel values from a pixel... |
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6778709 |
Embedded block coding with optimized truncation
A multi-layer embedded bitstream is generated from a subband decomposition by partitioning each subband of the decomposition into a plurality of blocks; and encoding the blocks of each subband.... |
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6738522 |
Efficient SIMD quantization method
A method of quantizing multiple input values in parallel using SIMD instructions is disclosed. In one embodiment, the method comprises (1) receiving a set of input values Xi; (2) operating on the... |
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6738528 |
Block noise detector and block noise eliminator
A vertical HPF and a horizontal HPF receive a video signal 101, and extract only a high frequency component in the vertical/horizontal directions, respectively. Absolute value taking parts take an... |
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6583887 |
Method and apparatus for data compression
Compression apparatus is described that operates to select an optimum compression procedure to apply to received image data. The compression apparatus can be employed in a page printer having a... |
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6222943 |
Image reading, processing and recording with quick data compression
There is disclosed an image processing apparatus in which variable-length compression is performed, e.g. by orthogonally transforming input image data in units of frames, and quantizing the... |
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6198850 |
System and method for segmentation dependent lossy and lossless compression for higher quality
A method and system takes advantage of both lossy and lossless compression techniques to increase processing speed and efficiency, and to decrease required image storage space. In the system and... |
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5978508 |
Two-dimensional inverse discrete cosine transformation circuit for MPEG2 video decoder
A two-dimensional inverse discrete cosine transformation circuit of an MPEG2 video decoder including a one-dimensional inverse discrete cosine transformation circuit, an input switching circuit... |
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5933537 |
Method and apparatus for conversion of frequency-coefficient matrices
A method and apparatus are disclosed for converting frequency-coefficient matrices between a configuration in which the matrices are transforms of unoverlapped image-data matrices and a... |
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5923787 |
Quantization device and method, inverse-quantization device and method, and image processing device and method
A quantization device includes a multiplying unit for multiplying one of n×n values of quantization matrix information by a selected scale factor so as to provide quantization basis... |
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5905815 |
Decoding encoded image signals encoded by further transforming transformed DC signals
Image signals are encoded following a spatial decomposition pattern that is based on a selected location within the image. The resulting sequence of sets of encoded image signals may be... |
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5886794 |
Picture encoding apparatus
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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5850294 |
Method and apparatus for post-processing images
The invention is an image transmitting method and system including receiving encoded images, decoding those images and post-processing the decoded images. The post-processing reduces visual... |
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5768437 |
Fractal coding of data
A method of fractal coding of data and apparatus therefor, which method comprises dividing data into domains, determining a set of transformations relating the domains to the data in such a manner... |
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5745607 |
Image encoding apparatus and method for generating and encoding reduced image data by bit planes
Binary color image data outputted by a color scanner is stored in three buffers for respective ones of the color components red, blue and green. First the red data in one buffer is selected by a... |
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5724453 |
Image compression system and method having optimized quantization tables
A digital image compression preprocessor for use in a discrete cosine transform-based digital image compression device is provided. The preprocessor includes a gathering mechanism for determining... |