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| Number | Title | Issue Date |
| 8189662 | Selection compression A method of generating a compressed video stream, comprising: providing a plurality of display commands which represents a display; generating a plurality of quantized transform coefficients from said display commands, wherein said quantization is different for diff... | 05/29/2012 |
| 8189663 | Method of selecting quantizer values in video compression systems A method of obtaining a quantization value for macroblocks of a picture for video compression includes estimating 11, for a plurality of quantization values, a size of the picture in terms of a sum of all quantized coded coefficients. A linear relationship be... | 05/29/2012 |
| 8184694 | Harmonic quantizer scale A digital media encoder/decoder performs quantization/dequantization based on quantization parameters taken from a harmonic quantizer scale. The harmonic quantizer scale can include a normal portion consisting of quantization parameter values harmonically-related as... | 05/22/2012 |
| 8175149 | Method and apparatus for controlling bitrate of scalable video stream Provided is a method and apparatus for controlling a bit-rates in which an amount of generated bits is adjusted according to the complexity of each frame, and a bit-rate within a frame can be further effectively adjusted by applying different quantization parameter ... | 05/08/2012 |
| 8175147 | Video coding rate control Video encoding (such as H.263, MPEG-4, H.264/AVC) modifies TMN5-type rate control frame skipping and quantization parameter updating according to buffer fullness levels with I-frame initial quantization parameter values depend upon quantization parameter value of pr... | 05/08/2012 |
| 8175148 | Method and device for indicating quantizer parameters in a video coding system A method and device for coding of digital video sequence, wherein an indication of quantization parameter (QP) is provided in the encoded bit-stream for decoding purposes. The QP related information is indicated by introducing a sequence level quantization parameter... | 05/08/2012 |
| 8170101 | Methods and systems for low-complexity data compression Embodiments of the present invention comprise systems and methods for low-complexity data compression. ... | 05/01/2012 |
| 8165203 | Line-based video rate control A method for line-based video rate control is provided. The line based video rate control method includes system feedback to change system operating parameters, including on a packet-by-packet basis and also on a line-by-line basis. Also provided is a method for lin... | 04/24/2012 |
| 8165204 | Resource allocation for frame-based controller A method for resource allocation for video encoder to achieve optimal picture quality within a given resource budget. Making a video encoder utilize the computational complexity, bitrate and other resources in an optimal way while maintaining optimal quality is a co... | 04/24/2012 |
| 8165202 | Video compression rate The video encoding rate control with the quantization parameter for basic units of macroblocks of a picture adapting to deviation from the average quantization parameter over pictures of the same type (i.e., I-pictures, P-pictures, and B-pictures). ... | 04/24/2012 |
| 8160138 | Filtering method for removing block artifacts and/or ringing noise and apparatus therefor Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribut... | 04/17/2012 |
| 8149909 | Video encoding control using non-exclusive content categories In some embodiments, macroblock-level encoding parameters are assigned to weighted Linear combinations of corresponding content-category-level encoding parameters. A macroblock quantization parameter (QP) modulation is set to a weighted linear combination of content... | 04/03/2012 |
| 8144767 | Method and apparatus for coding image information, method and apparatus for decoding image information, method and apparatus for coding and decoding image information, and system of coding and transmitting image information An image information decoding method for decoding compressed image information which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-block basis, and quantizing resulta... | 03/27/2012 |
| 8139636 | Method and apparatus for coding image information, method and apparatus for decoding image information, method and apparatus for coding and decoding image information, and system of coding and transmitting image information An image information decoding method for decoding compressed image information in an image decoding apparatus, which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-blo... | 03/20/2012 |
| 8139635 | Method for efficient encoding and decoding quantized sequence in Wyner-Ziv coding of video A computer-based method for encoding and decoding quantized sequences in Wyner-Ziv coding of video, bi-partite graph is used in an iterative process. The method takes as input to an encoder a sequence of quantized data from a finite alphabet, the sequence comprising... | 03/20/2012 |
| 8135063 | Rate control method with frame-layer bit allocation and video encoder A video encoder controlling rate of each frame in a current frame set (Group of Picture, GOP), and method thereof. The video encoder comprises a frame grouping device, a GOP initialization device, and a GOP encoding device. The frame grouping device allocates a targ... | 03/13/2012 |
| 8135062 | Method and apparatus for QP modulation based on perceptual models for picture encoding A method for encoding a picture is disclosed. The method generally includes the steps of (A) generating at least one respective macroblock statistic from each of a plurality of macroblocks in the picture, (B) generating at least one global statistic from the picture... | 03/13/2012 |
| 8130827 | Method and apparatus for interpolating a reference pixel in an annular image and encoding/decoding an annular image A method and apparatus are disclosed for interpolating an object reference pixel in an annular image. In one embodiment, reference pixels selected based on a distorted shape of the annular image are arranged in a direction of distortion of the annular image and an o... | 03/06/2012 |
| 8130828 | Adjusting quantization to preserve non-zero AC coefficients A video encoder identifies one or more AC coefficients of each of plural blocks in the picture. The encoder identifies a threshold quantization step size such that the identified AC coefficient(s) of each of the plural blocks are nonzero after quantization according... | 03/06/2012 |
| 8111748 | Method and apparatus for video coding In uniform superposition of two predictions toward a weighted superposition, such as in coding B frames, weighting is based on reliability of a reference picture used for determination of the prediction. Since there is a relationship between the reliability and the ... | 02/07/2012 |
| 8107528 | Picture processing apparatus, picture processing method, information processing apparatus, recording medium, and program A reusable quantization value Qref included in history information or parameter information is obtained in step S21. In step S22, it is judged whether or not the quantization value Qref obtained in step S21 is smaller than a predetermined minimu... | 01/31/2012 |
| 8094716 | Method and apparatus of adaptive lambda estimation in Lagrangian rate-distortion optimization for video coding A method for hybrid video coding is disclosed. The method generally includes the steps of (A) calculating a bit rate based on a percentage of quantized zero coefficients resulting from encoding a plurality of components of a video signal, (B) calculating a distortio... | 01/10/2012 |
| 8094717 | Image generation apparatus and image generation method An image generation apparatus generates a new video sequence with a high S/N ratio and suppressed motion blurs, from an original video sequence and a still image which are generated by capturing the same dark, moving object. The image generation apparatus includes: ... | 01/10/2012 |
| 8094715 | Video signal encoding device and video signal encoding method Included are: a prefilter (101) for outputting, based on filter characteristics control data, predetermined frequency components in an input video signal as current image data; encoding means (116) for subjecting the current image data to an encoding p... | 01/10/2012 |
| 8090016 | Activity normalization for video encoding The invention facilitates the normalization of activity normalization parameters to be used to select the proper quantization value for encoded video data that directly influences the Human Visual System (HVS). ... | 01/03/2012 |
| 8090017 | Method and apparatus for coding interlaced video data Often hierarchical bi-directionally predicted frame structures are used for encoding a video picture sequence. The frames may consist of interlacing fields. A method for encoding interlaced video, wherein inter-prediction of fields is used and reference lists are as... | 01/03/2012 |
| 8081678 | Picture coding method and picture decoding method The picture coding method of the present invention is a picture coding method for coding a picture on a block-by-block basis, comprising: a selection step of selecting one of at least two sizes as a size of a block on which orthogonal transformation should be perfor... | 12/20/2011 |
| 8081679 | Image processing apparatus An image processing apparatus includes a quantizing unit configured to quantize an input moving image signal using a set quantization scale; a coding unit configured to perform variable length coding on an output of the quantizing unit; an activity detecting unit co... | 12/20/2011 |
| 8077775 | System and method of adaptive rate control for a video encoder A method of adaptively adjusting a QP of a video encoder to control output bit rate including estimating the QP based on a complexity of a previous frame and encoding bit rate information of a current frame to provide an estimated QP, determining a threshold value b... | 12/13/2011 |
| 8073052 | Layered Wyner-Ziv video coding for transmission over unreliable channels A system and method for video coding. Energy-concentrating transform operations are performed on video data to obtain transformed data. Nested scalar quantization is performed on the transformed data to generate blocks of coset indices. Bit planes of the blocks of c... | 12/06/2011 |
| 8064517 | Perceptually adaptive quantization parameter selection A system (and a method) are disclosed for adaptively selecting quantization parameter for each region of input video signal to be encoded within a video processing system. The system includes a frame partition module, an edge feature detector, a macroblock adaptive ... | 11/22/2011 |
| 8064516 | Text recognition during video compression A method for encoding an image of a video stream divided into macroblocks comprising determining a maximum of variance of luma blocks in a macroblock, determining if the maximum of variance exceeds a predetermined threshold, determining if the motion vectors of the ... | 11/22/2011 |
| 8059713 | Video coding apparatus A video coding apparatus carries out a compression coding of a video based on a result of predicting a motion vector predicted between frames of the video. A quantization parameter control unit comprised of the apparatus calculates a ratio of an accumulation value, ... | 11/15/2011 |
| 8059714 | Methods and systems for residual layer scaling Embodiments of the present invention comprise systems and methods for managing and combining data contained in layers in a multilayer bitstream such that one or more transform coefficients in a first layer are used to modify one or more coefficients in a second laye... | 11/15/2011 |
| 8054880 | Parallel rate control for digital video encoder with multi-processor architecture and picture-based look-ahead window A method of operating a multi-processor video encoder by determining a target size corresponding to a preferred number of bits to be used when creating an encoded version of a picture in a group of sequential pictures making up a video sequence. The method includes ... | 11/08/2011 |
| 8045614 | Quantization control for variable bit depth The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which f... | 10/25/2011 |
| 8045615 | Deblock filtering techniques for video coding according to multiple video standards This disclosure describes deblock filtering techniques in which an in-loop deblock filter of a first codec is used as a post deblock filter of a second codec. A number of techniques are also described to facilitate input parameter adjustments and allow for the effec... | 10/25/2011 |
| 8036267 | Rate control for video coder employing adaptive linear regression bits modeling A rate control system is disclosed for video coding applications. The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of spatial complexity, motion complexity and/or bits per pel of the pic... | 10/11/2011 |
| 8036268 | Moving image encoding apparatus, moving image encoding method, and video device According to one embodiment, a moving image/picture encoding apparatus of an embodiment comprises an encoded information acquisition module, an encoding complexity calculation module, an encoding complexity conversion module, and a transcode module. The encoded info... | 10/11/2011 |
| 8031769 | Method and device for controlling quantization scales of a video encoding bit stream According to the exemplary embodiment of the present invention, a method for controlling quantization scales when encoding video signals is disclosed, which comprises: (a) generating a new quantization scale; and (b) comparing the new quantization scale with a prior... | 10/04/2011 |
