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| Number | Title | Issue Date |
| 8031768 | System and method for performing optimized quantization via quantization re-scaling A method, system, and program product for quantizing discrete cosine transform coefficients, e.g., for MPEG compression, with minimal bit rate overhead and without using a quantization matrix. This is done by scaling a uniform quantization parameter for the entire d... | 10/04/2011 |
| 8027383 | Mosquito noise reduction filter in digital decoders A method for processing a compressed signal of digital video is disclosed. The method generally includes the steps of (A) generating a decompressed signal by decompressing the compressed signal of digital video, (B) generating a filtered signal by spatial filtering ... | 09/27/2011 |
| 8027384 | Scalable MPEG video/macro block rate control A scaleable macro block rate control method particularly well-suited for MPEG video. There is provided a method to easily derive a quantization parameter (QP) value using information such as bit usage, previous QP values and SAD values from the past encoded and futu... | 09/27/2011 |
| 8018997 | System and method for video encoding A video encoding method and system are provided for encoding a video sequence. The video sequence includes N sub-sequences which each includes a plurality of frames. When the video encoding system encodes the jth frame in the ith sub-sequence of the video sequence, ... | 09/13/2011 |
| 8014448 | Method and apparatus for encoding and/or decoding moving pictures A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quan... | 09/06/2011 |
| 8014447 | Process and arrangement for encoding video pictures Today's video codecs require the intelligent choice between many coding options. This choice can efficiently be done using Lagrangian coder control. But Lagrangian coder control only provides results given a particular Lagrange parameter, which correspond to some un... | 09/06/2011 |
| 8005140 | Soft decision and iterative video coding for MPEG and H.264 A method of encoding video data using soft decision quantization makes use of iterative encoding to provide the ability to optimize encoding across different functional elements in a hybrid video encoder. Iterative encoding is used to allow quantization step size, m... | 08/23/2011 |
| 8005141 | 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... | 08/23/2011 |
| 8005139 | Encoding with visual masking Some embodiments of the invention encode a sequence of video images based on “visual masking” attributes of the video images and/or portions of the video images. Visual masking of an image or a portion of the image is an indication of how much coding artifacts c... | 08/23/2011 |
| 8000388 | Parallel processing apparatus for video compression A method of and an apparatus for parallel processing video compression is described herein. A picture is divided into N zones vertically, and Vertical Split Parallelism (VSP) deploys N+1 processes: N M-coding processes for general macroblock coding in N zones and on... | 08/16/2011 |
| 7995649 | Quantization adjustment based on texture level A video encoder identifies a current smooth region of a current picture in a sequence and performs temporal analysis by determining whether a corresponding region in at least one previous and/or future picture is smooth. Based at least in part on the temporal analys... | 08/09/2011 |
| 7986731 | H.264/AVC coder incorporating rate and quality controller 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... | 07/26/2011 |
| 7983337 | Moving picture coding device, moving picture coding method, and recording medium with moving picture coding program recorded thereon According to one embodiment, a moving picture coding device which performs a motion-compensated prediction for moving picture data in macroblocks, applies discrete cosine transform and quantization to a prediction error obtained by the motion-compensation prediction... | 07/19/2011 |
| 7978767 | Method and apparatus for encoding and/or decoding moving pictures A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quan... | 07/12/2011 |
| 7978765 | Context-adaptive macroblock type encoding/decoding methods and apparatuses Macroblock types of macroblocks of a video picture are encoded by adaptively employing codewords of codeword tables, based at least in part on one or more macroblock type related characteristics of one or more neighboring macroblocks of interest. The codewords may b... | 07/12/2011 |
| 7978766 | Method and apparatus for encoding and/or decoding moving pictures A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quan... | 07/12/2011 |
| 7974340 | Adaptive B-picture quantization control The present application is directed to techniques and tools for adapting the quantizer as well as the quantization step size used during video encoding. For example, a video encoder uses a non-uniform quantizer (having a relatively large dead zone ratio) for B-pictu... | 07/05/2011 |
| 7970054 | Method and apparatus for encoding and/or decoding moving pictures A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quan... | 06/28/2011 |
| 7970053 | Method and apparatus for encoding and/or decoding moving pictures A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quan... | 06/28/2011 |
| 7970052 | Method and apparatus for encoding and/or decoding moving pictures A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quan... | 06/28/2011 |
| 7970050 | Method and apparatus for encoding and decoding data in intra mode based on multiple scanning Provided are a method and apparatus for encoding and decoding in an intra mode based on a multiple scanning method through which efficiency of the intra mode is improved by using a spatial relationship within a frame more and obtaining estimation information from nu... | 06/28/2011 |
| 7970051 | Method and apparatus for encoding and/or decoding moving pictures A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quan... | 06/28/2011 |
| 7970055 | Method and apparatus for compressing image data There is provided an image data compression apparatus capable of effectively suppressing an image data volume after compression processing. A bit rate value is detected according to the image data volume after the compression processing. According to the bit rate si... | 06/28/2011 |
| 7965768 | Video signal encoding apparatus and computer readable medium with quantization control The present invention provides an image coding apparatus and an image coding program that execute quantization control so that a generating bit is made close to a target bit. The image coding apparatus according to the present invention includes a generated bit meas... | 06/21/2011 |
| 7961783 | Methods and systems for rate control in video encoder A method of rate control in a video encoder includes performing a first encoding step to encode macroblocks of a current frame by utilizing a first quantization parameter to thereby generate a residual signal for the current frame; estimating a number of header bits... | 06/14/2011 |
| 7961784 | Method and system for improving compressed image chroma information Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the colo... | 06/14/2011 |
| 7953147 | Iteration based method and/or apparatus for offline high quality encoding of multimedia content A method for encoding video, comprising the steps of (A) encoding a number of frames of a video signal using a first sub-set of encoding parameters, (B) analyzing the encoded frames to find and mark reference frames that are used more than a predetermined number of ... | 05/31/2011 |
| 7953148 | Signal compressing system A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, an... | 05/31/2011 |
| 7953150 | Signal compressing system A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, an... | 05/31/2011 |
| 7953149 | Signal compressing system A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, an... | 05/31/2011 |
| 7949045 | Signal compressing system A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, an... | 05/24/2011 |
| 7949046 | Signal compressing system A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, an... | 05/24/2011 |
| 7949043 | Method and apparatus for bit rate control in a digital video environment for arbitrary bandwidth According to an embodiment of the present invention, a method is presented for controlling a video image compression system. In this method a video frame of raw video image data is compressed using a processor. Then it is determined whether the processor is limited ... | 05/24/2011 |
| 7949044 | Method for coefficient bitdepth limitation, encoder and bitstream generation apparatus A method for coefficient bitdepth limitation in an encoder and/or bitstream generation apparatus including the steps of (A) generating one or more residual block coefficients in response to a video signal and one or more coding parameters and (B) manipulating the on... | 05/24/2011 |
| 7944969 | Method and system for sampling video data A method and system for sampling video data uses re-sampling filters having lengths optimized relative to a quantization parameter of video processing. The method uses modeling of an optimal length of the re-sampling filter as a function of the quantization paramete... | 05/17/2011 |
| 7944968 | Method for specification of quantized coefficient limit An apparatus including a transformation circuit and a scaling/quantization circuit. The transformation circuit may be configured to generate one or more transform coefficients in response to a video stream and one or more first control signals. The transformation ci... | 05/17/2011 |
| 7936817 | High-efficiency encoder and video information recording/reproducing apparatus In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field ... | 05/03/2011 |
| 7936816 | Digital transcoding system A digital transcoder system is presented for receiving data bit streams with a first bit rate (R1) and outputting a data bit stream with a second bit rate (R2) which differs from the first bit rate (R1), and in particular is reduced relative the... | 05/03/2011 |
| 7933327 | Moving picture coding method and moving picture decoding method A moving picture coding apparatus 1 includes: a quantization matrix holding unit (112) that holds a quantization matrix (WM) which has already been transmitted in a parameter set and a matrix ID for identifying the quantization matrix (WM), which are a... | 04/26/2011 |
| 7933328 | Rate control for digital video compression processing A video compression algorithm for converting a digital video stream having video content into a compressed video bitstream, includes rate control to control the size of the compressed video bitstream. The rate control takes into account two or more of (1) detected s... | 04/26/2011 |
