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    Rate control method of perceptual-based rate-distortion optimized bit allocation
    2.
    发明授权
    Rate control method of perceptual-based rate-distortion optimized bit allocation 有权
    基于感知的速率失真优化比特分配的速率控制方法

    公开(公告)号：US08654840B2

    公开(公告)日：2014-02-18

    申请号：US12832495

    申请日：2010-07-08

    申请人： Tao-Sheng Ou ,  Yi-Hsin Huang ,  Po-Yen Su ,  Homer H. Chen

    发明人： Tao-Sheng Ou ,  Yi-Hsin Huang ,  Po-Yen Su ,  Homer H. Chen

    IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

    CPC分类号： H04N19/124 ,  H04N19/147 ,  H04N19/159

    摘要： A rate control method of perceptual-based rate-distortion (R-D) optimized bit allocation is disclosed. An input frame is firstly determined as a key frame or non-key frame. A key frame is additionally encoded to generate rate-distortion (R-D) points. The R-D model of each basic unit (BU) is updated, followed by perceptual-based bit allocation, thereby generating a target bit rate. A quantization parameter (QP) is computed according to the target bit rate, and the current BU is encoded according to the QP. A rate-quantization (R-Q) model is updated if not all BUs have been encoded.

    摘要翻译： 公开了基于感知的速率失真（R-D）优化比特分配的速率控制方法。 输入帧首先被确定为关键帧或非关键帧。 附加编码关键帧以产生速率失真（R-D）点。 每个基本单元（BU）的R-D模型被更新，随后是基于感知的比特分配，从而产生目标比特率。 根据目标比特率计算量化参数（QP），根据QP对当前BU进行编码。 如果不是所有的BU已被编码，则更新速率量化（R-Q）模型。

    RATE-DISTORTION OPTIMIZED TRANSFORM AND QUANTIZATION SYSTEM
    3.
    发明申请
    RATE-DISTORTION OPTIMIZED TRANSFORM AND QUANTIZATION SYSTEM 有权
    速率失真优化变换和量化系统

    公开(公告)号：US20130235938A1

    公开(公告)日：2013-09-12

    申请号：US13413598

    申请日：2012-03-06

    申请人： Tsung Yau HUANG ,  Homer H. CHEN ,  Po-Yen SU ,  Chieh Kai KAO ,  TAO-SHENG OU

    发明人： Tsung Yau HUANG ,  Homer H. CHEN ,  Po-Yen SU ,  Chieh Kai KAO ,  TAO-SHENG OU

    IPC分类号： H04N7/30

    CPC分类号： H04N19/157 ,  H04N19/124 ,  H04N19/142 ,  H04N19/147 ,  H04N19/149 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61

    摘要： The present invention is directed to a rate-distortion optimized (RDO) transform and quantization system. A frame classification unit classifies an input frame as either a key frame or a non-key frame. A rate model update unit generates at least one model parameter of a rate model according to a transform coefficient and a bitrate resulted from an encoded key frame. An RDO transform and quantization unit processes the input frame, thereby generating a quantized transform coefficient according to the model parameter. A frame buffer is used to store a previous frame, according to which the bitrate is estimated.

    摘要翻译： 本发明涉及一种速率失真优化（RDO）变换和量化系统。 帧分类单元将输入帧分类为关键帧或非关键帧。 速率模型更新单元根据变换系数和由编码关键帧产生的比特率，生成速率模型的至少一个模型参数。 RDO变换和量化单元处理输入帧，从而根据模型参数生成量化的变换系数。 帧缓冲器用于存储先前的帧，据此估计比特率。

    RATE CONTROL METHOD OF PERCEPTUAL-BASED RATE-DISTORTION OPTIMIZED BIT ALLOCATION
    4.
    发明申请
    RATE CONTROL METHOD OF PERCEPTUAL-BASED RATE-DISTORTION OPTIMIZED BIT ALLOCATION 有权
    基于特征的速率失真优化比特分配的速率控制方法

    公开(公告)号：US20110310962A1

    公开(公告)日：2011-12-22

    申请号：US12832495

    申请日：2010-07-08

    申请人： TAO-SHENG OU ,  YI-HSIN HUANG ,  Po-Yen SU ,  Homer H. CHEN

    发明人： TAO-SHENG OU ,  YI-HSIN HUANG ,  Po-Yen SU ,  Homer H. CHEN

    IPC分类号： H04N7/12

    CPC分类号： H04N19/124 ,  H04N19/147 ,  H04N19/159

    摘要： A rate control method of perceptual-based rate-distortion (R-D) optimized bit allocation is disclosed. An input frame is firstly determined as a key frame or non-key frame. A key frame is additionally encoded to generate rate-distortion (R-D) points. The R-D model of each basic unit (BU) is updated, followed by perceptual-based bit allocation, thereby generating a target bit rate. A quantization parameter (QP) is computed according to the target bit rate, and the current BU is encoded according to the QP. A rate-quantization (R-Q) model is updated if not all BUs have been encoded.

    摘要翻译： 公开了基于感知的速率失真（R-D）优化比特分配的速率控制方法。 输入帧首先被确定为关键帧或非关键帧。 附加编码关键帧以产生速率失真（R-D）点。 每个基本单元（BU）的R-D模型被更新，随后是基于感知的比特分配，从而产生目标比特率。 根据目标比特率计算量化参数（QP），根据QP对当前BU进行编码。 如果不是所有的BU已被编码，则更新速率量化（R-Q）模型。