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US20120251015 DECODING METHOD, DECODING APPARATUS, CODING METHOD, AND CODING APPARATUS  
A decoding method includes: obtaining a plurality of quantization parameter sets from a header of a coded stream (S400); parsing an identifier from a header of a coded picture included in the...
US20140185949 EFFICIENT COMPACT DESCRIPTORS IN VISUAL SEARCH SYSTEMS  
Disclosed embodiments are directed to methods, systems, and circuits of generating compact descriptors for transmission over a communications network. A method according to one embodiment includes...
US20150023610 ENCODING METHOD AND SYSTEM USING BLOCK-BASED QUANTIZATION LEVEL THEREOF  
An encoding method and system using block-based quantization levels. In the encoding method, the encoding system calculates a feature value according to an image characteristic corresponding to a...
US20110222791 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...
US20090003452 WYNER-ZIV SUCCESSIVE REFINEMENT VIDEO COMPRESSION  
Improved methods, systems, and devices for Wyner-Ziv video compression are provided based on the disclosed successive resolution refinement techniques. The disclosed resolution refinement schemes...
US20080260278 Encoding adjustments for animation content  
Techniques and tools are described for encoding animation video. In some embodiments, a video encoder designates animation video for encoding as animation content, which typically involves...
US20110150352 VARIABLE 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...
US20090148058 REFERENCE SELECTION FOR VIDEO INTERPOLATION OR EXTRAPOLATION  
This disclosure describes selection of reference video units to be used for interpolation or extrapolation of a video unit, such as a video frame. A decoder may apply a quality-focused mode to...
US20090232399 APPARATUS AND METHOD FOR PATTERN RECOGNITION  
A pattern recognition method comprises steps of inputting a pattern of a recognition object performing feature extraction from the input pattern to generate a feature vector, increasing the number...
US20070116371 Decoding apparatus, inverse quantization method, and computer readable medium  
A decoding apparatus includes a classification section, a distribution-information generation section and an inverse-quantization-value generation section. The classification section classifies...
US20080159387 Entropy deficiency based image  
A method for obtaining a quantization factor for image compression by quantization of coefficients of a transformation of an image or part thereof, comprising determining an entropy-related...
US20140023284 DECODER PERFORMANCE THROUGH QUANTIZATION CONTROL  
A codec includes an encoder having a quantization level generator that defines a quantization level specific to a block of values (e.g., transform coefficients), a quantizer that quantizes the...
US20060177142 H.264 quantization  
Low complexity (16 bit arithmetic) H.264 video compression replaces a single quantization table for all quantization parameters with multiple quantization tables and thereby equalizes quantization...
US20050254719 Embedded scalar quantizers with arbitrary dead-zone ratios  
Embedded scalar quantizers for compression are described, along with tools for corresponding decompression. For example, a codec uses an embedded dead zone plus uniform threshold quantizer with...
US20120257839 CONTEXT ADAPTIVE HYBRID VARIABLE LENGTH CODING  
A coding method for an ordered series of quantized transform coefficients of a block of image data, including a context adaptive position coding process to encode the position of clusters of...
US20140016865 SYSTEM AND METHOD FOR SCALAR QUANTIZATION ERROR REDUCTION  
To reduce artifacts caused by quantization errors in image compression systems, an offset is added to quantized samples at low frequency sections of a macroblock. A decoder uses the offset after...
US20110037763 METHOD AND APPARATUS FOR REAL TIME 3D MESH COMPRESSION, BASED ON QUANITZATION  
An apparatus for 3D mesh compression based on quantization, includes a data analyzing unit (510) for decomposing data of an input 3D mesh model into vertices information (511) property information...
US20120014615 METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR OPTIMIZATION OF DATA COMPRESSION  
A sequence of n coefficients is compressed by determining a cost-determined sequence of n coefficient indices represented by a cost-determined sequence of (run, index derivative) pairs under a...
US20090141996 Comparator based acceleration for media quantization  
A method for comparator based quantization acceleration for an encoding process. The method includes computing coefficients for a discrete cosine transform encoding operation and determining a...
US20150016742 METHODS FOR COMPENSATING DECODING ERROR IN THREE-DIMENSIONAL MODELS  
Encoders compress 3D images and compensate for decoding error using instance component decoders which decode instance components of the 3D image to generate decoded instance components, error...
US20080273810 VIDEO CODING MODE SELECTION USING ESTIMATED CODING COSTS  
This disclosure describes techniques for coding mode selection using estimated coding costs. To provide high compression efficiency, for example, an encoding device may attempt to select a coding...
US20150245028 TECHNIQUES FOR EVALUATING COMPRESSED MOTION VIDEO QUALITY  
Various embodiments are generally directed to techniques for evaluating the resulting image quality of compression of motion videos as an input to controlling the degree of compression. A device...
US20110317932 IMAGE COMPRESSION METHOD WITH VARIABLE QUANTIZATION PARAMETERS AND VARIABLE CODING PARAMETERS  
An image compression method is used for processing a plurality of pixels of an image. The image compression method includes the steps of receiving N pixels; analyzing the N pixels and generating a...
US20070183677 Dynamic range compression of high dynamic range imagery  
An improved apparatus and method adaptively compresses the dynamic range of an image from a sensor by rescaling the value of every pixel to fit within the dynamic range of a low dynamic range...
US20130294706 LIMITED ERROR RASTER COMPRESSION  
Embodiments of the invention relate to an image or raster compression method that includes receiving pixel data for a raster comprising a two dimensional (2D) array of pixels where each pixel is...
US20110135198 CHROMINANCE ENCODING AND DECODING OF A DIGITAL IMAGE  
What is disclosed is a system and method for encoding and decoding chrominance values of a digital images. In one example embodiment, a digitized image comprising a plurality of pixels is...
US20080199094 Method of Redundant Picture Coding Using Polyphase Downsampling and the Codes Using the Method  
Provided are a method for redundant slice coding by polyphase down-sampling (PD) and a codec using the method. An encoder for redundant slice coding by PD includes a PD coding unit rearranging a...
US20100091981 Steganalysis of Suspect Media  
Techniques described herein are generally related to steganalysis of suspect media. Steganalysis techniques may include receiving instances of suspect media as input for steganalytic processing. A...
US20130272621 METHODS FOR SEGMENTING AND ENCODING AN IMAGE, AND CORRESPONDING DEVICES  
A frame of pixels is segmented into a plurality of blocks each having a block type by a method including the steps of: a) performing an initial segmentation of the frame into a set of initial...
US20090304298 HIGH DYNAMIC RANGE TEXTURE COMPRESSION  
A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a...
US20130071039 IMAGE PROCESSING APPARATUS AND METHOD  
An image processing apparatus and a method capable of performing a quantization process or an inverse quantization process more suitable for contents of an image. A lossless decoding unit decodes...
US20090147843 METHOD AND APPARATUS FOR QUANTIZATION, AND METHOD AND APPARATUS FOR INVERSE QUANTIZATION  
Provided are a quantization method and apparatus and an inverse-quantization method and apparatus for determining quantization steps using lengths of runs that are transform coefficients having...
US20100278231 Post-decoder filtering  
A method of providing post-processing information to client decoders. The method includes encoding a video, by an encoder and determining one or more parameters of sharpening, color space bias...
US20090245587 Classifying and controlling encoding quality for textured, dark smooth and smooth video content  
Techniques and tools for content classification and adaptive quantization are described. In an example implementation, a video encoding tool classifies blocks as textured, dark smooth or other...
US20130028533 METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR OPTIMIZATION OF DATA COMPRESSION  
A sequence of n coefficients is compressed by determining a cost-determined sequence of n coefficient indices represented by a cost-determined sequence of (run, index derivative) pairs under a...
US20150249830 METHOD AND APPARATUS FOR IMAGE COMPRESSION  
The present disclosure discloses method and apparatus for image compression. The method includes: acquiring a threshold of a similarity score of an image; acquiring a first quality factor of the...
US20120002895 BITMAP COMPRESSION FOR FAST SEARCHES AND UPDATES  
Bitmap compression for fast searches and updates is provided. Compressing a bitmap includes receiving a bitmap to compress, and reading the bitmap to determine a value of a bit location for all...
US20070248276 Quantization Table Producing Device, Quantization Table Producing Method, Quantization Table Producing Program, Image Compression Device, Image Compression Method and Image Compression Program  
An image compression device includes a quantization table storing portion storing a first quantization table and a second quantization table prepared by adjusting the first quantization table with...
US20150078674 COMPONENT SORTING BASED ENCODING FOR 3D MESH COMPRESSION  
A method and an apparatus for 3D model compression are described. Correlation among the components of the 3D model are explored and utilized to increase the compression ratio. A principal...
US20060257038 Method for object edge detection in macroblock and method for deciding quantization scaling factor  
A method for object edge detection in a macroblock and a method for deciding quantization scaling factor are disclosed. This method calculates and compares the pixel means and means of absolutely...
US20080260277 SYSTEM AND METHOD FOR ACCURATE PARALLEL QUANTIZATION WITH TWO MULTIPLICATION OPERATIONS  
A method, system and computer program product that involves receiving and initializing a digital image. Quantization is preformed on the digital image using at least two multiplication operations....
US20090245673 SHARED ERROR RESILIENCY PATH THROUGH COEFFICIENT REORDERING  
The method, system, and apparatus of a shared error resiliency path through coefficient reordering is disclosed. In on embodiment, determining that an input data is data-partitioned, performing a...
US20070092146 System and method for transform coding randomization  
A method and system are provided where image data is encoded in the spatial domain, and transformed in a two dimensional transform process to thereby recover a frequency domain representation of...
US20080037888 IMAGE QUANTIZATION METHOD AND APPARATUS  
An image quantization method and apparatus are provided in which a block with a high possibility of having color distortion is more elaborately quantized using a predetermined color distortion...
US20080226183 DPCM with Adaptive Range and PCM Escape Mode  
The embodiments of the present invention provide for methods, devices, and systems adapted to perform adaptive quantization processes. The adaptive quantization processes of the present invention...
US20050141774 Image compression utilizing discarding of bitplanes  
In compressions of digital images, image types are defined, each having a preassigned quantization step-size set. The digital image is decomposed to produce a plurality of subbands. Coefficients...
US20070065035 Image processing method and two-dimension discrete cosine transformation device using the same  
An image processing method and a two-dimension discrete cosine transformation device using the same method are provided. The method includes steps of reading an image pixel data block, converting...
US20090290040 Image dynamic range compression method, apparatus, and digital camera  
A method of compressing an original dynamic range of an original image, includes a first step of obtaining a reduced image corresponding to the original image by performing quantization and...
US20110317933 Image Coding Method for Facilitating Run Length Coding and Image Encoding Device Thereof  
An image coding method for run-length coding (RLC), including quantizing a coefficient string representing a plurality of pixel values to generate a first quantization coefficient string,...
US20140294315 METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR OPTIMIZATION OF DATA COMPRESSION WITH ITERATIVE COST FUNCTION  
A method, system and computer software product for improving rate-distortion performance while remaining faithful to JPEG/MPEG syntax, involving joint optimization of Huffman tables, quantization...

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