公开(公告)号：US09264681B2

公开(公告)日：2016-02-16

申请号：US13818288

申请日：2011-08-23

申请人： Walter Gish ,  Zhen Li ,  Donald Pian ,  Christopher Vogt ,  Hyung-Suk Kim ,  David Ruhoff

发明人： Walter Gish ,  Zhen Li ,  Donald Pian ,  Christopher Vogt ,  Hyung-Suk Kim ,  David Ruhoff

IPC分类号： H04N9/67 ,  G09G5/02 ,  H04N9/68

CPC分类号： H04N9/67 ,  G06F3/1423 ,  G09G5/02 ,  G09G5/10 ,  G09G2320/0271 ,  G09G2320/0276 ,  G09G2340/06 ,  H04N9/12 ,  H04N9/68

摘要： Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.

摘要翻译： 描述了增强图像动态范围。 在具有与第一动态范围相关的第一色域的第一颜色空间中表示的输入视频信号被转换为在具有第二色域的第二颜色空间中表示的视频信号。 第二颜色空间与第二动态范围相关联。 转换的视频信号的至少两个（例如，三个）颜色相关分量被映射在第二动态范围上。

公开(公告)号：US20130148029A1

公开(公告)日：2013-06-13

申请号：US13818288

申请日：2011-08-23

申请人： Walter Gish ,  Zhen Li ,  Donald Pian ,  Christopher Vogt ,  Hyung-Suk Kim ,  David Ruhoff

发明人： Walter Gish ,  Zhen Li ,  Donald Pian ,  Christopher Vogt ,  Hyung-Suk Kim ,  David Ruhoff

IPC分类号： H04N9/67

CPC分类号： H04N9/67 ,  G06F3/1423 ,  G09G5/02 ,  G09G5/10 ,  G09G2320/0271 ,  G09G2320/0276 ,  G09G2340/06 ,  H04N9/12 ,  H04N9/68

摘要： Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.

摘要翻译： 描述增强图像动态范围。 在具有与第一动态范围相关的第一色域的第一颜色空间中表示的输入视频信号被转换为在具有第二色域的第二颜色空间中表示的视频信号。 第二颜色空间与第二动态范围相关联。 转换的视频信号的至少两个（例如，三个）颜色相关分量被映射在第二动态范围上。

公开(公告)号：US20110194618A1

公开(公告)日：2011-08-11

申请号：US13091311

申请日：2011-04-21

申请人： Walter Gish ,  Zhen Li ,  Christopher Vogt

发明人： Walter Gish ,  Zhen Li ,  Christopher Vogt

IPC分类号： H04N7/26

CPC分类号： G06T5/50 ,  G06F3/1423 ,  G06T2207/20208 ,  G09G5/10 ,  G09G2320/0271 ,  H04N19/30 ,  H04N19/36 ,  H04N19/59 ,  H04N19/61 ,  H04N19/63 ,  H04N19/70

摘要： A first image stream has a first dynamic range and a first color space. First and the second image streams are received in a layered codec. The second image stream has a second dynamic range, which is higher than the first dynamic range. The first image stream is in the codec's base layer; the second image stream is in its enhancement layer. The first image stream is encoded to obtain an encoded image stream, which is decoded to obtain a decoded image stream. The decoded image stream is converted from the first non-linear or linear color space to a second, different color space to obtain a color converted image stream. A higher dynamic range image representation of the color converted image stream is generated to obtain a transformed image stream. Inverse tone mapping parameters are generated based on the transformed image stream and the second image stream.

摘要翻译： 第一图像流具有第一动态范围和第一颜色空间。 在分层编解码器中接收第一和第二图像流。 第二图像流具有高于第一动态范围的第二动态范围。 第一个图像流在编解码器的基本层中; 第二图像流在其增强层中。 第一图像流被编码以获得编码图像流，其被解码以获得解码图像流。 解码图像流从第一非线性或线性颜色空间转换为第二不同颜色空间以获得颜色转换图像流。 生成颜色转换图像流的较高动态范围图像表示以获得变换图像流。 基于变换图像流和第二图像流生成逆色调映射参数。

公开(公告)号：US08982963B2

公开(公告)日：2015-03-17

申请号：US13091311

申请日：2011-04-21

申请人： Walter Gish ,  Zhen Li ,  Christopher Vogt

发明人： Walter Gish ,  Zhen Li ,  Christopher Vogt

IPC分类号： H04N7/50 ,  G06T5/50 ,  H04N19/70 ,  H04N19/30 ,  H04N19/63 ,  H04N19/61 ,  H04N19/59 ,  H04N19/36

CPC分类号： G06T5/50 ,  G06F3/1423 ,  G06T2207/20208 ,  G09G5/10 ,  G09G2320/0271 ,  H04N19/30 ,  H04N19/36 ,  H04N19/59 ,  H04N19/61 ,  H04N19/63 ,  H04N19/70

摘要： A first image stream has a first dynamic range and a first color space. First and the second image streams are received in a layered codec. The second image stream has a second dynamic range, which is higher than the first dynamic range. The first image stream is in the codec's base layer; the second image stream is in its enhancement layer. The first image stream is encoded to obtain an encoded image stream, which is decoded to obtain a decoded image stream. The decoded image stream is converted from the first non-linear or linear color space to a second, different color space to obtain a color converted image stream. A higher dynamic range image representation of the color converted image stream is generated to obtain a transformed image stream. Inverse tone mapping parameters are generated based on the transformed image stream and the second image stream.

摘要翻译： 第一图像流具有第一动态范围和第一颜色空间。 在分层编解码器中接收第一和第二图像流。 第二图像流具有高于第一动态范围的第二动态范围。 第一个图像流在编解码器的基本层中; 第二图像流在其增强层中。 第一图像流被编码以获得编码图像流，其被解码以获得解码图像流。 解码图像流从第一非线性或线性颜色空间转换为第二不同颜色空间以获得颜色转换图像流。 生成颜色转换图像流的较高动态范围图像表示以获得变换图像流。 基于变换图像流和第二图像流生成逆色调映射参数。

公开(公告)号：US08743291B2

公开(公告)日：2014-06-03

申请号：US14009773

申请日：2012-04-12

申请人： Zhen Li ,  Walter Gish

发明人： Zhen Li ,  Walter Gish

IPC分类号： H04N9/64 ,  H04N9/67 ,  H04N11/20 ,  G09G5/02

CPC分类号： H04N9/64 ,  G06T5/009 ,  H04N9/67 ,  H04N17/02

摘要： A first video signal is accessed, and represented in a first color space with a first color gamut, related to a first dynamic range. A second video signal is accessed, and represented in a second color space of a second color gamut, related to a second dynamic range. The first accessed video signal is converted to a video signal represented in the second color space. At least two color-related components of the converted video signal are mapped over the second dynamic range. The mapped video signal and the second accessed video signal are processed. Based on the processing, a difference is measured between the processed first and second video signals. A visual quality characteristic relates to a magnitude of the measured difference between the processed first and second video signals. The visual quality characteristic is assessed based, at least in part, on the measurement of the difference.

摘要翻译： 访问第一视频信号，并且在与第一动态范围有关的具有第一色域的第一颜色空间中表示。 访问第二视频信号，并且在与第二动态范围相关的第二色域的第二颜色空间中表示。 第一访问的视频信号被转换成在第二颜色空间中表示的视频信号。 经转换的视频信号的至少两个颜色相关分量被映射在第二动态范围上。 处理映射的视频信号和第二被访问的视频信号。 基于该处理，在经处理的第一和第二视频信号之间测量差。 视觉质量特性涉及经处理的第一和第二视频信号之间的测量差异的大小。 视觉质量特征至少部分地基于差异的测量来评估。

公开(公告)号：US20140022460A1

公开(公告)日：2014-01-23

申请号：US14009773

申请日：2012-04-12

申请人： Zhen Li ,  Walter Gish

发明人： Zhen Li ,  Walter Gish

IPC分类号： H04N9/64 ,  H04N17/02

CPC分类号： H04N9/64 ,  G06T5/009 ,  H04N9/67 ,  H04N17/02

摘要： A first video signal is accessed, and represented in a first color space with a first color gamut, related to a first dynamic range. A second video signal is accessed, and represented in a second color space of a second color gamut, related to a second dynamic range. The first accessed video signal is converted to a video signal represented in the second color space. At least two color-related components of the converted video signal are mapped over the second dynamic range. The mapped video signal and the second accessed video signal are processed. Based on the processing, a difference is measured between the processed first and second video signals. A visual quality characteristic relates to a magnitude of the measured difference between the processed first and second video signals. The visual quality characteristic is assessed based, at least in part, on the measurement of the difference.

摘要翻译： 访问第一视频信号，并且在与第一动态范围有关的具有第一色域的第一颜色空间中表示。 访问第二视频信号，并且在与第二动态范围相关的第二色域的第二颜色空间中表示。 第一访问的视频信号被转换成在第二颜色空间中表示的视频信号。 经转换的视频信号的至少两个颜色相关分量被映射在第二动态范围上。 处理映射的视频信号和第二被访问的视频信号。 基于该处理，在经处理的第一和第二视频信号之间测量差。 视觉质量特性涉及经处理的第一和第二视频信号之间的测量差异的大小。 视觉质量特征至少部分地基于差异的测量来评估。

公开(公告)号：US09008229B2

公开(公告)日：2015-04-14

申请号：US13250589

申请日：2011-09-30

申请人： Zhen Li

发明人： Zhen Li

IPC分类号： H03D1/24 ,  G04R20/10

CPC分类号： G04R20/10

摘要： A device for obtaining a RCC signal and related methods are described herein improves the reliability of the RCC signal reception and demodulation. In one aspect, a device configured to obtain a RCC signal includes: a receiving circuit to receive an analog AM RCC signal and to process said analog AM RCC signal to generate a digital AM RCC signal; and a demodulation circuit in connection with said receiving circuit, to demodulate said digital AM RCC signal to generate the RCC signal. In another aspect, a method for obtaining a RCC signal includes: processing a received analog AM RCC signal to generate a digital AM RCC signal; and demodulating said digital AM RCC signal to generate said RCC signal. Since the digital processing method is more reliable than the analog processing method, the reliability of RCC signal reception and demodulation are improved.

摘要翻译： 本文描述了用于获得RCC信号的装置和相关方法，提高了RCC信号接收和解调的可靠性。 一方面，一种被配置为获得RCC信号的设备包括：接收电路，用于接收模拟AM RCC信号并处理所述模拟AM RCC信号以产生数字AM RCC信号; 以及与所述接收电路相关的解调电路，以解调所述数字AM RCC信号以产生RCC信号。 另一方面，一种用于获得RCC信号的方法包括：处理接收的模拟AM RCC信号以产生数字AM RCC信号; 以及解调所述数字AM RCC信号以产生所述RCC信号。 由于数字处理方法比模拟处理方法更可靠，因此提高了RCC信号接收和解调的可靠性。

公开(公告)号：US08855196B2

公开(公告)日：2014-10-07

申请号：US12863923

申请日：2009-01-21

申请人： Zhen Li ,  Alexandros Tourapis

发明人： Zhen Li ,  Alexandros Tourapis

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/15 ,  H04N19/149 ,  H04N19/19 ,  H04N19/147 ,  H04N19/91 ,  H04N19/51 ,  H04N19/567

CPC分类号： H04N19/00672 ,  H04N19/147 ,  H04N19/149 ,  H04N19/15 ,  H04N19/19 ,  H04N19/52 ,  H04N19/567 ,  H04N19/91

摘要： Adaptive motion information cost estimation is achieved in processing video information. A transmission cost is estimated that is associated with encoding a motion vector difference (mvd) in motion vectors that describe a motion characteristic of the video information. The mvd is encoded based on minimizing a rate estimation mismatch associated with the motion vectors. The encoding step includes computing a bit count associated with the mvd using CABAC. A value is indexed that corresponds to the cost from one or more entries in the lookup table. The cost relates to context or content characteristics associated with the video information. The lookup table is adaptively updated based on a change in the contextual information or content characteristics. The value is dynamically adjustable based on the change.

摘要翻译： 在处理视频信息时实现自适应运动信息成本估计。 估计与描述视频信息的运动特性的运动矢量中的运动矢量差（mvd）编码有关的传输成本。 基于最小化与运动矢量相关联的速率估计失配来编码mvd。 编码步骤包括使用CABAC计算与mvd相关联的位计数。 索引值对应于查找表中的一个或多个条目的成本。 成本涉及与视频信息相关联的上下文或内容特征。 基于上下文信息或内容特征的变化来自适应地更新查找表。 该值可根据变化动态调整。

公开(公告)号：US08654835B2

公开(公告)日：2014-02-18

申请号：US13063768

申请日：2009-09-16

申请人： Zhen Li ,  Alexandros Tourapis

发明人： Zhen Li ,  Alexandros Tourapis

IPC分类号： H04N7/12

CPC分类号： H04N19/19 ,  H04N19/103 ,  H04N19/105 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/196

摘要： A value of one or more Lagrangian multipliers is adaptively estimate and update based, at least in part, on the video source statistics or dynamic programming. Methods, techniques, and systems involve determining a first Lagrangian multiplier with a video encoder, and updating a second Lagrangian multiplier with the first Lagrangian multiplier. The system can include a Lagrangian multiplier Estimation Module that estimates the Lagrangian multiplier, and a Lagrangian multiplier Update Module that updates the current Lagrangian multiplier using the estimated Lagrangian multiplier. The Online Lagrangian Multiplier Estimation Module may function with Rate Distortion Slope Estimation with Rate Distortion Optimized Mode Decision; Rate Distortion Slope Estimation with Local Approximation; Rate Distortion Slope Estimation with Local Information; or Rate Distortion Slope Estimation with Global Information. The Lagrangian Multiplier Update Module may function with Direct Update; Step Size Update; Sliding Window Update; or Periodical Update.

摘要翻译： 一个或多个拉格朗日乘数的值至少部分地基于视频源统计或动态规划自适应地估计和更新。 方法，技术和系统涉及用视频编码器确定第一拉格朗日乘数，并用第一拉格朗日乘数更新第二拉格朗日乘数。 该系统可以包括拉格朗日乘数估计模块，其估计拉格朗日乘数，以及拉格朗日乘数更新模块，其使用估计的拉格朗日乘数来更新当前的拉格朗日乘数。 在线拉格朗日乘数估计模块可以利用速率失真优化模式决策的速率失真斜率估计功能; 利用局部逼近估计失真坡度估计; 利用本地信息估价失真坡度估计; 或使用全局信息对失真斜率进行估计。 拉格朗日乘数更新模块可以直接更新; 步长更新; 滑动窗口更新; 或定期更新。

公开(公告)号：US08594178B2

公开(公告)日：2013-11-26

申请号：US12999419

申请日：2009-06-18

申请人： Zhen Li ,  Alexandros Tourapis

发明人： Zhen Li ,  Alexandros Tourapis

IPC分类号： H04N7/26 ,  H04N7/50

CPC分类号： H04N19/19 ,  H04N19/103 ,  H04N19/124 ,  H04N19/147 ,  H04N19/164 ,  H04N19/176 ,  H04N19/61

摘要： Video compression is performed under multiple distortion constraints. Video coding includes determining a first set of Lagrangian cost values for multiple coding modes using a first distortion metric, determining a second set of Lagrangian cost values for the multiple coding modes using a second distortion metric, and selecting one of the coding modes based on the first set of Lagrangian cost values and the second set of Lagrangian cost values to encode a pixel block using the selected coding mode. The distortion metrics can include information associated with video display characteristics such as screen display size, video processing performance, a distortion characteristic, a temporal characteristic, or a spatial characteristic. The distortion metrics can also include characteristics of multiple video displays, such as parameters for usage, importance, design, and the technology type of the video displays.

摘要翻译： 在多个失真约束下进行视频压缩。 视频编码包括使用第一失真度量来确定用于多个编码模式的第一组拉格朗日代价值，使用第二失真度量确定多个编码模式的第二拉格朗日代价集合，并且基于 第一组拉格朗日代价值和第二组拉格朗日代价值，以使用所选择的编码模式对像素块进行编码。 失真度量可以包括与诸如屏幕显示尺寸，视频处理性能，失真特性，时间特性或空间特性的视频显示特征相关联的信息。 失真度量还可以包括多个视频显示器的特征，例如使用参数，重要性，设计和视频显示器的技术类型。