System and method for improving transrating of MPEG-2 video
    1.
    发明授权
    System and method for improving transrating of MPEG-2 video 有权
    改进MPEG-2视频转换的系统和方法

    公开(公告)号:US07804899B1

    公开(公告)日:2010-09-28

    申请号:US09905600

    申请日:2001-07-13

    IPC分类号: H04B1/66

    CPC分类号: H04N7/24

    摘要: The present invention discloses how a transcoder may be used to reduce the bit rate of an MPEG-2 stream by transmitting only the visible area of the movie specified by pan-scan directives. Because the pan-scan conversion is performed prior to transmission, not immediately before display, the non-viewed portion of video does not need to be transmitted.

    摘要翻译: 本发明公开了如何通过仅传送由pan-scan指令指定的电影的可见区域来降低MPEG-2流的比特率的代码转换器。 由于在发送前进行全景扫描转换,不是在显示之前立即进行,所以不需要发送视频的非观看部分。

    Source adaptive system and method for 2D iDCT
    2.
    发明授权
    Source adaptive system and method for 2D iDCT 有权
    二维iDCT的源自适应系统和方法

    公开(公告)号:US07366236B1

    公开(公告)日:2008-04-29

    申请号:US09874587

    申请日:2001-06-04

    申请人: Lowell Winger

    发明人: Lowell Winger

    IPC分类号: H04B1/66

    摘要: This invention discloses a fast two-dimensional inverse Discrete Cosine Transform (iDCT) that adapts to compressed video source statistics to reduce execution time. iDCT algorithms for sparse blocks eliminate calculations for some zero coefficients and are implemented with quad-word parallel single-instruction-multiple-data (SIMD) multimedia instructions. It is observed that end-of-block marker value histograms vary little within single shots. An adaptive control mechanism is proposed that selects the optimal set of iDCTs to prepare for an entire shot from its first frames (to reduce software overheads and penalties). This introduces no degradation of decoded video quality as compared with a conventional SIMD 8×8 iDCT implemented with Intel MMX instructions.

    摘要翻译: 本发明公开了一种快速二维逆离散余弦变换(iDCT),适用于压缩视频源统计以减少执行时间。 用于稀疏块的iDCT算法消除了一些零系数的计算,并且使用四字并行单指令多数据(SIMD)多媒体指令来实现。 观察到块结束标记值直方图在单次拍摄中变化很小。 提出了一种自适应控制机制,选择最佳的iDCT集合来准备其第一帧的整个镜头(以减少软件开销和惩罚)。 与使用Intel MMX指令实现的传统SIMD 8x8 iDCT相比,这不会导致解码的视频质量下降。

    Unified approach to film mode detection
    3.
    发明申请
    Unified approach to film mode detection 有权
    电影模式检测的统一方法

    公开(公告)号:US20070139552A1

    公开(公告)日:2007-06-21

    申请号:US11314631

    申请日:2005-12-20

    IPC分类号: H04N5/253 H04N11/20 H04N5/14

    CPC分类号: H04N7/0115

    摘要: A method for inverse telecine. The method generally includes the steps of (A) checking if a current field of a plurality of fields in a video sequence repeats in the video sequence according to a pattern-based approach where the current field fits a telecine pattern, (B) checking if the current field repeats according to a first pattern-less approach where the current field complies with at least one of a plurality of rules and (C) generating a signal for an encoder in (i) an asserted state if the current field repeats and (ii) a deasserted state if the current field does not repeat.

    摘要翻译: 一种反向电视电影的方法。 该方法通常包括以下步骤:(A)根据基于模式的方法检查视频序列中的多个场的当前场是否在视频序列中重复,其中当前场适合电视电影图案,(B)检查是否 当前场根据第一无模式方法重复,其中当前场符合多个规则中的至少一个,并且(C)生成用于编码器的信号,其中(i)当前场重复的有效状态和( ii)如果当前字段不重复,则为无效状态。

    Method for composite video artifacts reduction
    4.
    发明申请
    Method for composite video artifacts reduction 失效
    复合视频文物减少方法

    公开(公告)号:US20060244868A1

    公开(公告)日:2006-11-02

    申请号:US11115463

    申请日:2005-04-27

    IPC分类号: H04N5/14 H04N9/64

    CPC分类号: H04N5/21 H04N5/145 H04N9/646

    摘要: A method for composite noise filtering is disclosed. The method generally includes the steps of (A) generating a selection value in response to a stationary check identifying one of a plurality of blendings for a current item of a current field, (B) generating a filtered item in response to one of (i) a first of the blendings between the current item and a first previous item co-located in a first previous field having an opposite phase of composite artifacts from the current field and (ii) a second of the blendings between the current item and a first motion compensated item from the first previous field and (C) switching between the first blending and the second blending in response to the selection value.

    摘要翻译: 公开了一种复合噪声滤波方法。 该方法通常包括以下步骤:(A)响应于识别当前场的当前项目的多个混合中的一个的固定检查来生成选择值,(B)响应于(i )当前项目和第一先前项目之间的第一个混合中的第一个,共同位于具有与当前场的复合人造物相反的第一先前场中,以及(ii)当前项目和第一 运动补偿项目,以及(C)响应于选择值在第一混合和第二混合之间切换。

    Method and apparatus for masking of video artifacts and/or insertion of film grain in a video decoder
    5.
    发明申请
    Method and apparatus for masking of video artifacts and/or insertion of film grain in a video decoder 有权
    用于在视频解码器中屏蔽视频伪影和/或胶片颗粒的插入的方法和装置

    公开(公告)号:US20060182183A1

    公开(公告)日:2006-08-17

    申请号:US11059175

    申请日:2005-02-16

    申请人: Lowell Winger

    发明人: Lowell Winger

    IPC分类号: H04B1/66

    摘要: A video decoder comprising (i) a post-processing filter block, (ii) a comfort noise addition block and (iii) a video value/range adjustment block, where the comfort noise addition block is integrated into a video output path of the video decoder. The post-processing filter block may be configured to perform one or more of noise reduction, spatial filtering and temporal filtering on luminance data. The comfort noise addition block may be configured to add comfort noise to the luminance data. The video value/range adjustment block may be configured to adjust one or both of a value and a range of the luminance data.

    摘要翻译: 一种视频解码器,包括(i)后处理滤波器块,(ii)舒适噪声添加块和(iii)视频值/范围调整块,其中舒适噪声添加块被集成到视频的视频输出路径中 解码器。 后处理滤波器块可以被配置为对亮度数据执行降噪,空间滤波和时间滤波中的一个或多个。 舒适噪声添加块可以被配置为向亮度数据添加舒适噪声。 视频值/范围调整块可以被配置为调整亮度数据的值和范围中的一个或两个。

    Programmable quantization dead zone and threshold for standard-based H.264 and/or VC1 video encoding
    6.
    发明申请
    Programmable quantization dead zone and threshold for standard-based H.264 and/or VC1 video encoding 有权
    基于标准的H.264和/或VC1视频编码的可编程量化死区和阈值

    公开(公告)号:US20060126724A1

    公开(公告)日:2006-06-15

    申请号:US11010029

    申请日:2004-12-10

    摘要: A video encoder comprising an encoder circuit, a quantizer circuit and a control circuit. The encoder circuit may be configured to generate a number of coefficient values in response to a video stream and a number of quantized values. The quantizer circuit may be configured to generate the number of quantized values in response to the coefficient values, two or more quantization dead zones and two or more offsets. The control circuit may be configured to set the two or more quantization dead zones and the two or more offsets to different values. The two or more quantization dead zones and the two or more offsets are independently programmable.

    摘要翻译: 一种视频编码器,包括编码器电路,量化器电路和控制电路。 编码器电路可以被配置为响应于视频流和多个量化值而生成多个系数值。 量化器电路可以被配置为响应于系数值,两个或更多个量化死区和两个或更多个偏移量而产生量化值的数量。 控制电路可以被配置为将两个或更多个量化死区和两个或更多个偏移设置为不同的值。 两个或多个量化死区和两个或更多个偏移是可独立编程的。

    Method and apparatus for improved increased bit-depth display from a transform decoder by retaining additional inverse transform bits
    7.
    发明申请
    Method and apparatus for improved increased bit-depth display from a transform decoder by retaining additional inverse transform bits 有权
    用于通过保留附加的逆变换位来改进来自变换解码器的增加位深度显示的方法和装置

    公开(公告)号:US20060088106A1

    公开(公告)日:2006-04-27

    申请号:US10974103

    申请日:2004-10-27

    申请人: Lowell Winger

    发明人: Lowell Winger

    摘要: A method and apparatus for processing a video block extracted from an encoded bitstream. The method generally includes the steps of (A) generating a normal block by inverse transforming the video block, the normal block having a normal resolution, (B) generating an alternate block from the video block, the alternate block comprising image detail (i) present after the inverse transforming and (ii) absent from the normal block and (C) generating an output block based on the normal block and the alternate block, the output block having an output resolution greater than the normal resolution.

    摘要翻译: 一种用于处理从编码比特流提取的视频块的方法和装置。 该方法通常包括以下步骤:(A)通过对视频块进行逆变换来生成正常块,该正常块具有正常分辨率,(B)从视频块生成替代块,该替代块包括图像细节(i) 存在于逆变换之后,并且(ii)不存在于正常块中,(C)基于正常块和交替块产生输出块,输出块具有大于正常分辨率的输出分辨率。

    Method and system for symbol binarization
    8.
    发明授权
    Method and system for symbol binarization 有权
    符号二值化方法和系统

    公开(公告)号:US06982663B2

    公开(公告)日:2006-01-03

    申请号:US10770213

    申请日:2004-02-02

    申请人: Lowell Winger

    发明人: Lowell Winger

    IPC分类号: H03M7/00

    摘要: The present invention is directed to an improved method for the binarization of data in an MPEG data stream. The invention makes use of unary binarization to create codewords up until an index threshold. Once the threshold has been met, succeeding code symbols have appended to them an exp-Golomb suffix. This hybrid binarization scheme reduces the number of binary codewords to be processed by a Binary Arithmetic Coder (BAC), thus reducing the computation required by the BAC.

    摘要翻译: 本发明涉及用于MPEG数据流中的数据的二值化的改进方法。 本发明利用一元二值化来创建码字直到索引阈值。 一旦满足阈值,后​​续代码符号就会附加一个exp-Golomb后缀。 这种混合二值化方案减少了由二进制算术编码器(BAC)处理的二进制码字的数量,从而减少了BAC所需的计算。

    System and method for reduced codebook vector quantization
    9.
    发明授权
    System and method for reduced codebook vector quantization 失效
    减少码本矢量量化的系统和方法

    公开(公告)号:US06968092B1

    公开(公告)日:2005-11-22

    申请号:US09934992

    申请日:2001-08-21

    申请人: Lowell Winger

    发明人: Lowell Winger

    IPC分类号: G06K9/36 G06T9/00

    CPC分类号: H04N19/94 G06T9/008

    摘要: The present invention extends the generalized Lloyd algorithm (GLA) for vector quantizer (VQ) codebook improvement and codebook design to a new linearly-constrained generalized Lloyd algorithm (LCGLA). The LCGLA improves the quality of VQ codebooks, by forming the codebooks from linear combinations of a reduced set of base codevectors. The present invention enables a principled approach for compressing texture images in formats compatible with various industry standards. New, more flexible compressed texture image formats are also made possible with the present invention. The present invention enhances signal compression by improving traditional VQ approaches through the integrated application of linear constraints on the multiple pattern and signal prototypes that represent a single pattern or block of signal samples.

    摘要翻译: 本发明将用于矢量量化器(VQ)码本改进和码本设计的广义劳埃德算法(GLA)扩展到新的线性约束广义劳埃德算法(LCGLA)。 LCGLA通过从一组基本码矢量的线性组合形成码本来提高VQ码本的质量。 本发明使得能够以与各种行业标准兼容的格式压缩纹理图像的原理方法。 本发明也可以实现新的,更灵活的压缩纹理图像格式。 本发明通过在表示单个模式或信号样本块的多个模式和信号原型上的线性约束的综合应用来改进传统的VQ方法来增强信号压缩。

    Dynamic GOP system and method for digital video encoding
    10.
    发明授权
    Dynamic GOP system and method for digital video encoding 失效
    动态GOP系统和数字视频编码方法

    公开(公告)号:US06959044B1

    公开(公告)日:2005-10-25

    申请号:US09935140

    申请日:2001-08-21

    IPC分类号: H04N7/12 H04N7/26 H04N7/50

    摘要: This invention discloses an intra-frame complexity based dynamic GOP system and method for the encoding of MPEG-2 video streams. The present invention may be used as a rate control tool to improve video quality. The selective insertion of low complexity I frames in scene changes such as fades is disclosed. It is disclosed that the selective use of I frames in certain scene change situations can improve encoder performance, particularly when encoding at a low bit rate.

    摘要翻译: 本发明公开了一种用于编码MPEG-2视频流的基于帧内复杂度的动态GOP系统和方法。 本发明可以用作速率控制工具来改善视频质量。 公开了在诸如渐变的场景变化中选择性地插入低复杂度I帧。 公开了在某些场景变化情况下选择性使用I帧可以提高编码器性能,特别是当以低比特率进行编码时。