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Class 382/248 - Transform coding


Subclass of Class 382 - Image analysis
Definition: Subject matter in which the image data undergoes a mathematical
No. of applications: 143
Last issue date: 01/19/2012


1        
Application No.Application TitleIssue Date
20120013758Memory Compression Technique with Low Latency per Pixel
In an embodiment, a compression unit is provided which may perform compression of images with low latency and relatively little hardware. Similarly, a decompression unit may be provided which may decompress the images with low latency and hardware. In an embodiment, the...
01/19/2012
20110305402IMAGE PROCESSOR
The image processor 1 includes a frequency transform unit 12, an encoding unit 15, and a memory 4. The encoding unit 15 includes a DC processing unit 31 that generates a direct-current stream, an LP processing unit 32 tha...
12/15/2011
20110293196PICTURE ENCODING AND DECODING
Video is encoded by applying a vertically and horizontally separable transform to provide a block of transform coefficients; and quantising the transform coefficients. Prior to quantisation, a filtering operation is performed on the block of transform coefficients, the ...
12/01/2011
20110262052IMAGE CODING APPARATUS, CONTROL METHOD THEREOF, AND STORAGE MEDIUM
Even in a case where there are a plurality of syntax elements, the invention reduces influence of the number of syntax elements and realizes high-speed encoding. An apparatus comprises N number of codes generation units arranged in parallel, which are configured to gene...
10/27/2011
20110255798DATA TRANSFORM APPARATUS
This invention decreases the count of access to a memory which stores image data regarding orthogonal transform, and quickly generates orthogonal transform coefficients. An apparatus includes a storage unit which stores image data, a memory controller which reads each b...
10/20/2011
20110255799SCAN CONVERSION APPARATUS, IMAGE ENCODING APPARATUS, AND METHODS OF CONTROLLING THEM
Using scan conversion processing of changing the scan order for each block, parallel scan conversion processing is executed if possible. A scan status holding unit holds statistical information based on the appearance frequency values of coefficients in a block. A scan ...
10/20/2011
20110243471METHOD AND APPARATUS FOR PERFORMING INTERPOLATION BASED ON TRANSFORM AND INVERSE TRANSFORM
Provided are a method and apparatus for interpolating an image. The method includes: selecting a first filter, from among a plurality of different filters, for interpolating between pixel values of integer pixel units, according to an interpolation location; and generat...
10/06/2011
20110222792METHOD FOR CODING IMAGE, IMAGE CODING DEVICE AND IMAGE PICKUP SYSTEM
It is decided whether a processing target block includes an edge in accordance with an edge detection result of the processing target block. In the case where the edge is included, it is then detected whether there is a flat portion. It is decided whether the processing...
09/15/2011
20110200265METHOD OF RECORDING IMAGES AND DATA FOR RETRIEVING THESE IMAGES
According to this method, for the formulation and recording of the retrieval data, each of the images (2) taking the form of a two-dimensional array of rows and columns of pixels, the image is divided into blocks (4) of pixels, each block (4) compri...
08/18/2011
20110184934WAVELET COMPRESSION WITH BOOTSTRAP SAMPLING
A method for compressing an initial dataset may be implemented on a data processing system. The method may include generating a group of bootstrap samples of wavelet coefficients from the initial dataset using a wavelet basis function. An average quantile of the group o...
07/28/2011
20110176742Image processing apparatus and image processing method
An image processing apparatus is disclosed which includes: an analysis filtering section configured to transform a line block into coefficient data decomposed into frequency bands by performing an analysis filtering process hierarchically, the line block including image...
07/21/2011
20110176743DATA COMPRESSION METHODS
Data compression methods include an adaptive context sensitive compression (ACSC) method for data compression, a generalized discrete wavelength transform (GDWT) method for data compression, and a data compression method combining both the ACSC method and the GDWT metho...
07/21/2011
20110150352VARIABLE LENGTH CODING FOR CLUSTERED TRANSFORM COEFFICIENTS IN VIDEO COMPRESSION
Coding quantized transform coefficients as occur in image compression combines a position identifying method to identify the relative position of clusters of consecutive non-zero-valued coefficients, an amplitude event identifying method to identify amplitude events in ...
06/23/2011
20110129163Hadamard Transform-Based Image Compression Circuit and Method Thereof
A Hadamard transform-based image compression method includes performing a Hadamard transform on 2k pixel values according to a product of a 2k×2k stage Hadamard matrix and a 2k×2k adjustment matrix to generate 2
06/02/2011
20110116724Method for Exploiting Structure in Sparse Domain for Magnetic Resonance Image Reconstruction
A method for constructing an image includes acquiring image data in a first domain. The acquired image data is transformed from the first domain into a second domain in which the acquired image data exhibits a high degree of sparsity. An initial set of transform coeffic...
05/19/2011
20110110600METHOD FOR COMPRESSING IMAGES AND A FORMAT FOR COMPRESSED IMAGES
There is provided a method for compressing images and an image format. The method comprises performing a transform on pixel portions of image data and evaluating resulting coefficients from each transform in terms of a flatness condition. If the transform is found to be...
05/12/2011
20110097003METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BY USING ROTATIONAL TRANSFORM
An image encoding method includes generating a first frequency coefficient matrix by transforming a predetermined block to a frequency domain; determining whether the first frequency coefficient matrix includes coefficients whose absolute values are greater than a prede...
04/28/2011
20110090394Communication System with Compressive Sensing
Systems and methods for communication systems with compressive sensing are disclosed. In one embodiment, a method of signal processing includes receiving a data packet at a processor. The data packet includes compressively measured data in wavelet transform coefficients...
04/21/2011
20110091123Coding apparatus and coding method
A coding apparatus includes: a wavelet transform section which transforms image data into coefficient data for every sub-band; a code blocking section which divides a region of the sub-band of the coefficient data generated by the wavelet transform section into code blo...
04/21/2011
20110052088HIGH DYNAMIC RANGE IMAGE MAPPING WITH EMPIRICAL MODE DECOMPOSITION
The disclosure relates to receiving original image data decomposing the original image data into a plurality of layers, compressing a dynamic range of each of the plurality of layers, and integrating the plurality of compressed layers to form a final image....
03/03/2011
20110051814IMAGE PROCESSING SYSTEM AND METHOD
A system and method for processing an image is provided. The system includes an encoder configured to subdivide the image into N subregions. The value of N is computed based upon a spatial resolution of the image, a granularity value and a level of wavelet decomposition...
03/03/2011
20110052087METHOD AND SYSTEM FOR CODING IMAGES
Embodiments of the present invention are directed to efficient encoding of digital data using combinations of encoding techniques. In certain embodiments of the present invention, images or other data are encoded using both source coding and channel coding. Memoryless-c...
03/03/2011
20110013831Image coding apparatus, image coding method and computer readable medium storing program
An image coding apparatus includes: a transformation unit that transforms spatial domain image data having plural pixels, by a pixel block including plural pixels as a unit, into plural coefficient groups each including plural frequency domain coefficients; a grouping u...
01/20/2011
20100310187METHOD AND DEVICE FOR COMPRESSING AN IMAGE AND STORAGE MEDIUM CARRYING AN IMAGE COMPRESSED BY SAID METHOD
The invention is related to a method for compressing images. The proposed method comprises associating perceptual importance parameters with pixels of the image, applying a transform on the image, partitioning the transformed image into code blocks and encoding coeffici...
12/09/2010
20100272325Method for Transforming a Feature Vector
The present invention relates to a method for transforming a feature vector comprising a first and a second feature represented by a first and a second feature value, respectively, into a feature code using an encoder, said feature code usable in an algorithm and having...
10/28/2010
20100246973IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
An object input unit extracts the area of an object as an object area, and a mesh generation unit divides the object area into a plurality of meshes to obtain position information, gradient information, and color information of respective vertices that form the meshes. ...
09/30/2010
20100246986METHODS AND APPARATUS FOR GENERATING AND USING VISUAL ERROR WEIGHTS
A low complexity visual masking method used as part of an image encoding process is described. The method is suitable for use in JPEG2000 image compression systems. Control weights used for rate allocation are generated based on integer order moments of wavelet transfor...
09/30/2010
20100226548Remote desktop protocol (RDP) Tile Image Classification for Improving Compression Efficiency and Quality
Systems, methods and computer readable media are disclosed for improving compression efficiency and quality in a remote session via tile image classification and variable encoding. A server determines a set of codecs that are shared by both the server and a correspondin...
09/09/2010
20100220908SYSTEM AND METHOD FOR PROCESSING DATA SIGNALS
A signal processing method include steps initializing a residual data signal representative of an acquired data signal, determining a significant coefficient corresponding to the residual data signal, updating the residual data signal using the significant coefficient t...
09/02/2010
20100208989IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, PROGRAM AND INTEGRATED CIRCUIT
An image coding method includes transforming a color space of a color image from a first color space to a second color space to generate a color space transformed color image (S12), removing part of samples included in the color space transformed color image to g...
08/19/2010
20100202709PROCESS AND APPARATUS
The present invention relates to a process of bringing at least one subject data set into registration or conformity with a reference data set by electronic methods, each data set being a representation of a respective object. The process comprises: generating each of a...
08/12/2010
20100189371Decoding apparatus, dequantizing method, distribution determining method, and program thereof
A decoding apparatus includes a random-number generating section and a decoding section. The random-number generating section generates random numbers according to distribution of original data corresponding to respective quantization indexes. The decoding section gener...
07/29/2010
20100177977Image Watermarking
Methods and systems for watermarking of digital images are presented. In one aspect, a method of embedding information in a digital image includes transforming the digital image to a set of coefficient blocks having coefficients in a frequency domain, embedding a waterm...
07/15/2010
20100172582ENCODER, DECODER, ENCODING METHOD AND DECODING METHOD
An encoder, a decoder, an encoding method and a decoding method are provided. The encoder includes a reversible color transform module, a difference pulse code modulation (DPCM) intra prediction module, a quantization module, a reversible frequency transform module and ...
07/08/2010
20100166329DATA TRANSFORMING APPARATUS AND CONTROL METHOD THEREOF
This invention implements a fast lossless transform almost free from a delay with a small calculation amount. The lossless transform can be used to perform lossless coding and lossy coding quickly. A first calculation unit multiplies data D0, D1, D2...
07/01/2010
20100142827INFORMATION PROCESSING APPARATUS AND METHOD
An information processing apparatus includes a device for performing horizontal analysis filtering, a device for performing vertical analysis filtering, and a device for horizontal control. The information processing apparatus also includes a first control device. This ...
06/10/2010
20100142837INFORMATION PROCESSING APPARATUS AND METHOD
Analysis filter processing is recursively repeated on horizontal and vertical low frequency component coefficients obtained as a result of the analysis filter processing, until a predetermined decomposition level is reached. Coefficients obtained during a process of com...
06/10/2010
20100135590METHOD OF ENCODING AN IMAGE AND DEVICE IMPLEMENTING SAID METHOD
The invention relates to a method of encoding an image divided into non-overlapping macroblocks themselves divided into non-overlapping blocks of N by N pixels into a binary stream. It comprises the steps of: —transforming each of the block into a transformed block of...
06/03/2010
20100135589IMAGE PROCESSOR
An image processor includes a frequency transform unit performing frequency transform on a first pixel block as a target block, and a pre-filter performing prefiltering with a region which overlaps with plural unit regions for processing by the frequency transform unit ...
06/03/2010
20100128998COMPRESSION AND STORAGE OF PROJECTION DATA IN A ROTATABLE PART OF A COMPUTED TOMOGRAPHY SYSTEM
A method and apparatus compress projection data and store the compressed projection data in a rotatable part that is mounted for rotation within a stationary part. The data acquisition source, compressor and storage device are connected to the rotatable part. The compre...
05/27/2010
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