Class / Patent application number | Description | Number of patent applications / Date published |
382240000 | Pyramid, hierarchy, or tree structure | 22 |
20080226185 | METHODS AND DEVICES FOR CODING AND DECODING MULTIDIMENSIONAL DIGITAL SIGNALS - In order to code a multidimensional digital picture signal by decomposition into frequency sub-bands, wherein the decomposition into frequency sub-bands uses a filtering according to a plurality of geometric orientations: a picture at a resolution lower than the resolution of the digital picture signal is obtained; the edges of the picture at the lower resolution are located; and orientation values are attributed to the data of the digital picture signal as a function of the result of the edge location step. | 09-18-2008 |
20080267518 | Using Geometric Wavelets Based on Active Contours for Signal Processing - Certain embodiments provide systems and methods for using geometric wavelets based on active contours for signal processing. Certain embodiments may allow image processing. A system includes providing an image processing circuitry that computes a segmentation tree using active contours for an input image data; creates a geometric wavelets representation using the segmentation tree; and then generate an image based on geometric wavelet sparse representation extracted from the geometric wavelets representation. The geometric wavelet sparse representation may comprise M most active geometric wavelets from a set of N geometric wavelets in the geometric wavelets representation. The image processing circuitry may recursively find sub-domains and multivariate polynomials for each domain at each stage in the computing of the segmentation tree. Each of the sub-domains is a domain for a succeeding stage for the segmentation tree. The recursively finding may be terminated, for example, when each domain at a stage comprises less than a determined number of pixels. | 10-30-2008 |
20080279463 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING CIRCUIT, AND IMAGE PROCESSING METHOD - A disclosed image processing apparatus divides an image into code-blocks of different levels by a wavelet transform, generates information codes of code-block-related information items related to the code-blocks of the different levels using separate tag trees corresponding to the different levels, and generates code data in which the image is encoded. The image processing apparatus comprises a coordinate generating unit that generates an x coordinate and a y coordinate of each of the code-blocks of each of the levels wherein a unit in an x direction and in a y direction is defined by a size of the individual code-blocks of the corresponding level; and an address generating unit that generates a multiple so a combination value of a bit combination of the y coordinate and the x coordinate of each code-block as an address for storing the information code of the code-block in a first storage unit. | 11-13-2008 |
20080285868 | Simple Adaptive Wavelet Thresholding - A method for processing an image is described. In the method, image data representing an image into a memory device. The image data is filtered to obtain a plurality of coefficients representing low and high frequency image data. An area of low frequency data corresponding to one of the coefficients is analyzed to identify a degree of edginess of the region. A threshold is obtained, the threshold varying depending on the degree of edginess. If the coefficient is less than the threshold, it is reduced to zero. Wavelet-based image compression can then be performed on the image using the reduced coefficients. | 11-20-2008 |
20080285869 | INFORMATION PROCESSING DEVICE AND METHOD - An information processing device includes: a synthesis filter processing unit to subject image data to analysis filtering for dividing the frequency components of the image data into highband components and lowband components hierarchically, and subject the frequency components of the image data divided into a plurality of frequency components to synthesis filtering for mutually synthesizing the frequency components of the frequency band of the same division level recursively; a frequency component holding unit to hold frequency components of a division level one order lower, generated by the synthesis filtering performed by the synthesis filter processing unit; and a control unit to cause the synthesis filter processing unit to recursively perform the synthesis filtering processing on each frequency component held in the frequency component holding unit, in an order whereby the image data is restored in order from the top of the image, a plurality of lines at a time. | 11-20-2008 |
20080285870 | INFORMATION PROCESSING DEVICE AND METHOD - An information processing device includes: an analysis filtering section that applies to image data an analysis filtering process of decomposing frequency components of the image data into each frequency band by lifting operations; an encoding section that performs an encoding process of encoding the frequency components decomposed into each frequency band by the analysis filtering section; and a control section that controls execution of the encoding process by the encoding section with respect to each of the frequency components, so that the encoding process with respect to each of the frequency components is executed during a period after the analysis filtering process is finished with respect to a plurality of lines of the image data that are inputted, until a plurality of lines of next image data are inputted. | 11-20-2008 |
20090022412 | IMAGE PROCESSING APPARATUS AND IMAGE PICKUP APPARATUS USING THE SAME - A hierarchical coding unit hierarchically codes picked-up moving images. A storage stores moving image coded data which have been coded by the hierarchical coding unit. A hierarchical decoding unit decodes part of the moving image coded data so as to generate a moving image whose image quality is lower than the moving images. A recoding unit codes the moving image decoded by the hierarchical decoding unit. The hierarchical decoding unit decodes the moving image coded data starting from a lowest hierarchy up to a hierarchy corresponding to a specified resolution. | 01-22-2009 |
20090046937 | Method and system for data compression - The invention is a method and apparatus for compressing or decompressing two-dimensional electronic data. A method for compressing a two-dimensional electronic data set comprises the steps of: dividing the data set into data arrays, performing a wavelet transform on each array to provide a plurality of wavelet coefficients, and encoding at least some of the wavelet coefficients using an entropy encoding scheme. Each data array preferably relates to a separate and continuous area of an image. | 02-19-2009 |
20090103821 | FREQUENCY CONVERTER AND FREQUENCY INVERTER - On the first hierarchical layer, the input image adjuster selects an overlap processing area from a frequency-unconverted image. On the first hierarchical layer, the overlap processor performs overlap processing on the overlap processing area, and holds the image data of the remaining processing areas, which cannot be frequency-converted. The remaining processing area, which is a linear area, can have an image width reduced down to the displacement between the overlap processing area and the block areas. The processes on the second hierarchical layer are identical to those on the first hierarchical layer. As a result, the encoder maximizes the advantage of the high performance achieved by hardware implementation. | 04-23-2009 |
20090190848 | Image Processing Device and Method for Image Processing - An image processing device configured to compress image data to be used for printing with a plurality of compression levels having different compression rates includes a former stage compression unit, a storing unit and a latter stage compression unit. The latter stage compression unit is configured, after the former stage compression unit finishes compressing all of the areas, to recompress each of areas of a latest compression level at the moment being different from a compression level stored in the storing unit with the latest compression level. | 07-30-2009 |
20090196517 | METHOD AND APPARATUS FOR REDUCED RESOLUTION PARTITIONING - There are provided methods and apparatus for reduced resolution partitioning. An apparatus includes an encoder for encoding video data using adaptive tree-based frame partitioning, wherein partitions are obtained from a combination of top-down tree partitioning and bottom-up tree joining. | 08-06-2009 |
20090245670 | APPARATUS FOR PROCESSING A DATA STREAM HAVING A HIERARCHICAL LAYER STRUCTURE AND INCLUDING ENCODED DATA SETS AND RAW DATA SETS AND METHOD THEREOF - An apparatus for processing a data stream having a hierarchical layer structure and including encoded data sets and raw data sets is provided. The apparatus includes a first processing circuit for generating an enable signal corresponding to a predetermined layer of the hierarchical layer structure when detecting that a data set of the data stream corresponds to the predetermined layer, and a second processing circuit coupled to the first processing circuit for detecting whether an identifier of the data set corresponds to one predetermined raw data set identifier when receiving the enable signal from the first processing circuit. | 10-01-2009 |
20090245671 | RESOLUTION CONVERSION UPON HIERARCHICAL CODING AND DECODING - In a decoding method of decoding encoded image data which has been hierarchically encoded in advance, a size of an image to be outputted is determined, and then the encoded image data is decoded up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size. | 10-01-2009 |
20090317010 | Multiple Resolution Image Storage - In accordance with one or more aspects, multiple folders are generated each corresponding to one of multiple levels of an image pyramid, and each of the multiple levels including one or more tiles. In each of the multiple folders, one or more files are stored, each file including image data for a tile of the level corresponding to the folder. In accordance with other aspects, a first version of an image is generated, the first version of the image having a lower resolution than the image. The image is compressed using a first compression process, and the first version of the image is compressed using a second compression process, the second compression process being a higher quality process than the first compression process. Both the compressed image and the compressed first version of the image are stored as an image pyramid for the image. | 12-24-2009 |
20100124381 | METHOD AND APPARATUS FOR CODING POSITIONS OF COEFFICIENTS - A method and apparatus for coding positions of data such as coefficients are described. In one embodiment, the method comprises coding data in a vector of data based on indications of whether the data is zero or non-zero identified using a tree data structure and producing a bit stream based on coded data. | 05-20-2010 |
20110222791 | Post-Beamformer Ultrasound Compression - Embodiments of the invention compress ultrasound RF data after the receiver beamformer. An efficient compression algorithm is disclosed that incorporates the use of the Discrete Cosine Transform (DCT) and the Discrete Wavelet Packet (DWP) transform, followed by quantization of the wavelet coefficients. The algorithm first processes ultrasound scanlines from the receiver beamformer using a DCT transform. In a low-power configuration, a Hadamard transform may be used instead of the DCT. The output of the DCT processing is DCT coefficients at different frequencies. An optimized wavelet packet transform is then used for each coefficient line. The wavelet filter kernels and the wavelet packet trees can be jointly optimization using a two-step optimization algorithm. | 09-15-2011 |
20120008870 | IMAGE COMPRESSION UTILIZING RING-TREE ENTROPY CODING AND DIRECTIONAL TRANSFORMS - Image encoding for changing representation of zero coefficient clustering and for utilizing a novel directional transform for exploiting the directional properties of image energy. The apparatus and methods can be applied to numerous applications, such as within image codecs. A ring-tree method is taught for representing the grouping of zero transform coefficients as ring-trees into a new symbol for more efficiently coding images. Directional transforms are taught which provide enhanced energy compactness of coefficients, and which capture directional energy resulting in generating enhanced visual quality. | 01-12-2012 |
20120189221 | Image File Generation Device, Image Processing Device, Image File Generation Method, And Image Processing Method. - An image hierarchy generation unit reads image data stored in a hard disk drive, generate images with a plurality of resolutions, and hierarchizes the images. An image dividing unit divides the image in each layer into tile images. A redundancy detection unit analyzes the image in each layer so as to detect redundancy between images within the same layer or images from different layers. A tile image reference table creates a tile image reference table that maps area numbers to tile numbers, in view of the redundancy. An image file generation unit creates an image file that should be ultimately output and includes image data and the tile image reference table. | 07-26-2012 |
20120281928 | Method for Coding Pictures Using Hierarchical Transform Units - A bitstream includes coded pictures, and split-flags for generating a transform tree. The bit stream is a partitioning of coding units (CUs) into Prediction Units (PUs). The transform tree is generated according to the split-flags. Nodes in the transform tree represent transform units (TU) associated with the CUs. The generation splits each TU only if the corresponding split-flag is set. For each PU that includes multiple TUs, the multiple TUs are merged into a larger TU, and the transform tree is modified according to the splitting and merging. Then, data contained in each PU can be decoded using the TUs associated with the PU according to the transform tree. | 11-08-2012 |
20130034309 | METHODS OF AND APPARATUS FOR ENCODING AND DECODING DATA IN DATA PROCESSING SYSTEMS - To encode and compress a data array | 02-07-2013 |
20130121603 | RESOLUTION CONVERSION UPON HIERARCHICAL CODING AND DECODING - In a decoding method of decoding encoded image data which has been hierarchically encoded in advance, a size of an image to be outputted is determined, and then the encoded image data is decoded up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size. | 05-16-2013 |
20140177972 | SIGNAL TO NOISE IMPROVEMENT - Systems, methods, and processor executable code for high quality wide-range multi-layer image compression of a sequence of video images. A computer-implemented method of adding signal-to-noise improvement layers which are targeted to specific aspects of a sequence of images. The method comprises selecting one or more aspects of a coded image to improve, isolating those image aspects using the selection criteria, and coding a signal-to-noise layer using the isolated coded image aspects. A computer-implemented method for generating a signal-to-noise correction layer from a digitized video image represented as pixels. The method comprises quantizing and dequantizing the digitized video image to create a coded image, subtracting the coded image from the digitized video image to create a signal-to-noise difference image represented as pixels, and applying one or both of quantization weighting and pixel weighting to the signal-to-noise difference image pixel values such that larger difference image pixel values have smaller quantized values. | 06-26-2014 |