专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

WO2017102606A1 DYNAMIC RANGE CODING FOR IMAGES AND VIDEO 审中-公开
标题翻译：用于图像和视频的动态范围编码
公开(公告)号：WO2017102606A1
公开(公告)日：2017-06-22
申请号：PCT/EP2016/080538
申请日：2016-12-12
申请人： KONINKLIJKE PHILIPS N.V.
发明人： STESSEN, Jeroen, Hubert, Christoffel, Jacobus
IPC分类号： H04N5/202 , H04N1/64 , H04N9/68 , H04N19/46 , H04N19/102 , H04N19/186 , H04N19/44 , H04N5/355 , H04N19/98
CPC分类号： H04N19/46 , G06T5/009 , G06T2207/10016 , G06T2207/10024 , G06T2207/20208 , H04N1/64 , H04N5/35527 , H04N9/64 , H04N19/85 , H04N19/98
摘要： For obtaining an good yet easy to use luminance dynamic range conversion, we describe an HDR video decoder (250) comprising an image color processing apparatus (200) arranged to transform an input color (Y'UV_LDR) of a pixel of an input image (Im_in), which input image has a first luminance dynamic range (DR_1), into a red, green and blue color component output color (R'o, G'o, B'o) of a pixel of an output image (Im_res; REC_HDR), which output image has a second luminance dynamic range (DR_2), whereby the peak luminance of the first dynamic range is at least 2 times lower than the peak luminance of the second dynamic range or vice versa, comprising a coarse mapping unit (202; 552) arranged to apply a three-segment brightness re-grading curve which consists of a linear segment for a dark sub-range (SR_d) of the range of lumas of the input image colors comprising the darkest input luma values, which is determined by a slope variable (InvBet), a second linear segment for the lightest input luma values in a bright sub-range (SR_br), which is controlled by a second slope variable (InvAlph), and a parabolic segment in between the two linear segment.
摘要翻译：为了获得良好且易于使用的亮度动态范围转换，我们描述了包括图像色彩处理设备（200）的HDR视频解码器（250），该图像色彩处理设备（200）被配置为将输入色彩（Y'UV_LDR）将输入图像具有第一亮度动态范围（DR_1）的输入图像（Im_in）的像素转换成红色，绿色和蓝色分量输出颜色（R'o，G'o，B'o）输出图像具有第二亮度动态范围（DR_2）的输出图像的像素（Im_res; REC_HDR），由此第一动态范围的峰值亮度比第二动态范围的峰值亮度低至少2倍（202; 552），其被布置成应用由用于输入图像颜色的亮度范围的暗子范围（SR_d）的线性段组成的三段亮度再分级曲线，所述三级亮度再分级曲线包括最深的输入亮度值，由斜率变量（InvBet）确定，第二个线性段用于亮度子范围（SR_br）中的最亮输入亮度值（由第二个斜率变量（InvAlph）控制）和两个线性段之间的抛物线段。

12. 发明申请

WO2017053852A1 SYSTEM FOR RESHAPING AND CODING HIGH DYNAMIC RANGE AND WIDE COLOR GAMUT SEQUENCES 审中-公开
标题翻译：用于改变和编码高动态范围和宽彩色游戏序列的系统
公开(公告)号：WO2017053852A1
公开(公告)日：2017-03-30
申请号：PCT/US2016/053521
申请日：2016-09-23
申请人： ARRIS ENTERPRISES LLC
发明人： MINOO, Koohyar , BAYLON, David M. , GU, Zhouye , YU, Yue , LUTHRA, Ajay
IPC分类号： H04N19/98 , H04N19/70 , G06T5/00
CPC分类号： H04N19/124 , G06T5/007 , G06T2207/20208 , H04N19/174 , H04N19/177 , H04N19/186 , H04N19/44 , H04N19/70 , H04N19/98
摘要： A video data encoder generates a first metadata structure to describe one or more transfer functions to be applied by a decoder to reshape decoded video data into video data. The encoder segments a transfer function relative to P pivot points. It then allocates P cells in the metadata structure for storing the P pivot points. Each transfer function segment is fitted to a respective equation having N coefficients based on the order of the equation. The encoder allocates N+1 cells for each pivot point except for the P th pivot point and stores the number N in the first cell and the N coefficients in the remaining cells. The encoder generates a second metadata structure, associated with a video data set, that includes data identifying the transfer function to be applied to the video data set. The encoder encodes the video data including the first and second metadata structures.
摘要翻译：视频数据编码器生成第一元数据结构以描述由解码器应用的一个或多个传送函数，以将解码的视频数据重新形成视频数据。编码器相对于P个枢轴点分段传递函数。然后，它将P细胞分配到用于存储P个枢轴点的元数据结构中。每个传递函数段被拟合到具有基于等式的顺序的N个系数的相应等式。编码器为除了第P个枢轴点之外的每个枢轴点分配N + 1个单元，并将数量N存储在第一单元中，并将剩余单元中的N个系数存储。编码器生成与视频数据集相关联的第二元数据结构，其包括标识要应用于视频数据集的传递函数的数据。编码器对包括第一和第二元数据结构的视频数据进行编码。

13. 发明申请

WO2016140954A1 CONTENT-ADAPTIVE PERCEPTUAL QUANTIZER FOR HIGH DYNAMIC RANGE IMAGES 审中-公开
标题翻译：用于高动态范围图像的内容自适应量化器
公开(公告)号：WO2016140954A1
公开(公告)日：2016-09-09
申请号：PCT/US2016/020230
申请日：2016-03-01
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： FROEHLICH, Jan , SU, Guan-Ming , ATKINS, Robin , DALY, Scott , MILLER, Jon Scott
IPC分类号： H04N19/136 , H04N19/98
CPC分类号： H04N19/124 , H04N19/117 , H04N19/132 , H04N19/136 , H04N19/154 , H04N19/156 , H04N19/182 , H04N19/98
摘要： A content-adaptive quantizer processor receives an input image with an input bit depth. A noise-mask generation process is applied to the input image to generate a noise mask image which characterizes each pixel in the input image in terms of its perceptual relevance in masking quantization noise. A noise mask histogram is generated based on the input image and the noise mask image. A masking-noise level to bit-depth function is applied to the noise mask histogram to generate minimal bit depth values for each bin in the noise mask histogram. A codeword mapping function is generated based on the input bit depth, a target bit depth, and the minimal bit depth values. The codeword mapping function is applied to the input image to generate an output image in the target bit depth.
摘要翻译：内容自适应量化器处理器接收具有输入比特深度的输入图像。噪声屏蔽生成处理被应用于输入图像以产生噪声掩模图像，其根据其在掩蔽量化噪声中的感知相关性来表征输入图像中的每个像素。基于输入图像和噪声掩模图像生成噪声掩码直方图。将噪声屏蔽直方图应用到位深度函数的屏蔽噪声电平，以在噪声屏蔽直方图中为每个信道生成最小位深度值。基于输入比特深度，目标比特深度和最小比特深度值生成码字映射函数。将码字映射函数应用于输入图像以在目标比特深度中生成输出图像。

14. 发明申请

WO2014203505A1 IMAGE DECODING APPARATUS, IMAGE ENCODING APPARATUS, AND IMAGE PROCESSING SYSTEM 审中-公开
标题翻译：图像解码设备，图像编码设备和图像处理系统
公开(公告)号：WO2014203505A1
公开(公告)日：2014-12-24
申请号：PCT/JP2014/003143
申请日：2014-06-12
申请人： SONY CORPORATION
发明人： SATO, Kazushi
IPC分类号： H04N19/30 , H04N19/176 , H04N19/136 , H04N19/124 , H04N19/98 , H04N19/426
CPC分类号： H04N19/136 , H04N19/105 , H04N19/124 , H04N19/176 , H04N19/30 , H04N19/426 , H04N19/70 , H04N19/98
摘要： An image encoding apparatus includes circuitry configured to set a weight coefficient of a residual signal to be 0.5 when an input signal of image data constituted by a plurality of layers is 8 bits and a residual signal is 9 bits. The residual signal is a prediction error of inter-frame prediction in another layer different from a current layer of the image data.
摘要翻译：一种图像编码装置，包括电路，被配置为当由多个层构成的图像数据的输入信号为8位且残留信号为9位时，将残差信号的权重系数设置为0.5。剩余信号是与图像数据的当前层不同的另一层中的帧间预测的预测误差。

15. 发明申请

WO2014093079A1 DEVICE AND METHOD FOR SCALABLE CODING OF VIDEO INFORMATION BASED ON HIGH EFFICIENCY VIDEO CODING 审中-公开
标题翻译：基于高效率视频编码的视频信息可扩展编码的设备和方法
公开(公告)号：WO2014093079A1
公开(公告)日：2014-06-19
申请号：PCT/US2013/073015
申请日：2013-12-04
申请人： QUALCOMM INCORPORATED
发明人： SEREGIN, Vadim , CHEN, Ying , CHEN, Jianle
IPC分类号： H04N19/30 , H04N19/50 , H04N19/55 , H04N19/34 , H04N19/98 , H04N19/19 , H04N19/147
CPC分类号： H04N19/30 , H04N19/33 , H04N19/34 , H04N19/463 , H04N19/50 , H04N19/55 , H04N19/59
摘要： An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with an enhancement layer having a first block and a base layer having a second block, the second block in the base layer corresponding to the first block in the enhancement layer. The processor is configured to predict, by inter layer prediction, the first block in the enhancement layer based on information derived from the second block in the base layer. At least a portion of the second block is located outside of a reference region of the base layer, the reference region being available for use for the inter layer prediction of the first block. The processor may encode or decode the video information.
摘要翻译：被配置为对视频信息进行编码的装置包括与存储器单元通信的存储器单元和处理器。存储器单元被配置为存储与具有第一块的增强层相关联的视频信息和具有第二块的基本层，所述基本层中的第二块对应于增强层中的第一块。处理器被配置为基于从基层中的第二块导出的信息，通过层间预测来预测增强层中的第一块。第二块的至少一部分位于基本层的参考区域的外部，该参考区域可用于第一块的层间预测。处理器可以对视频信息进行编码或解码。

16. 发明申请

WO2023040753A1 一种视频编码、解码方法及装置审中-公开
公开(公告)号：WO2023040753A1
公开(公告)日：2023-03-23
申请号：PCT/CN2022/117938
申请日：2022-09-08
申请人：华为技术有限公司
发明人：徐巍炜 , 周建同 , 余全合 , 文锦松 , 胡宇彤
IPC分类号： H04N19/98 , H04N19/30 , G06T5/00
摘要：本申请实施例提供一种视频编码、解码方法及装置，涉及图像处理技术领域。视频编码装置可获取源数据，源数据包括针对同一视频数据的第一高动态范围HDR数据和第一标准动态范围SDR码流；根据第一SDR码流的重构数据与第一HDR数据对应关系，将第一SDR码流的重构数据映射成第二HDR数据；确定第二HDR数据与第一HDR数据的目标残差值；目标残差值的位宽小于或等于第一位宽；第一位宽为第一SDR视频编码成第一SDR码流采用的数据位宽；将对应关系以及目标残差值进行编码处理，确定预设数据；传输添加预设数据的第一SDR码流。本申请通过使用预设数据和SDR码流可保证SDR视频解码设备和HDR视频解码设备的良好处理。

17. 发明申请

WO2021108719A1 RATE-CONTROL-AWARE RESHAPING IN HDR IMAGING 审中-公开
公开(公告)号：WO2021108719A1
公开(公告)日：2021-06-03
申请号：PCT/US2020/062430
申请日：2020-11-25
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： KADU, Harshad , QI, Ji , SU, Guan-Ming
IPC分类号： H04N19/85 , H04N19/117 , H04N19/14 , H04N19/179 , H04N19/30 , H04N19/98
摘要： Given an input image in a high dynamic range (HDR) which is mapped to a second image in a second dynamic range using a reshaping function, to improve coding efficiency, a reshaping function generator may adjust the codeword range of the HDR input under certain criteria, such as for noisy HDR images with a relatively-small codeword range. An example of generating a scaler for adjusting the HDR codeword range based on the original codeword range and a metric of the percentage of edge-points in the HDR image is provided. The adjusted reshaping function allows for more efficient rate control during the compression of reshaped images.

18. 发明申请

WO2021079009A1 METHOD FOR MANAGING IMAGE DATA AND AUTOMOTIVE LIGHTING DEVICE 审中-公开
公开(公告)号：WO2021079009A1
公开(公告)日：2021-04-29
申请号：PCT/EP2020/080087
申请日：2020-10-26
申请人： VALEO VISION
发明人： ALMEHIO, Yasser , EL IDRISSI, Hafid
IPC分类号： H04N19/167 , H04N19/115 , H04N19/593 , H04N19/98 , B60Q1/04 , B62J6/02 , F21S41/00 , G01C21/36 , H04N19/119
摘要： The invention provides a method for managing image data in an automotive lighting device (10). This method comprises the steps of providing an image pattern (1), dividing the image pattern (1) in rows or columns of pixels (2), provide, for each row pattern (2), a plurality of linear segments, compress the data of the linear segments and send the compressed data to the light module. The invention also provides an automotive lighting device (10) for performing the steps of such a method.

19. 发明申请

WO2021076822A1 ADJUSTABLE TRADE-OFF BETWEEN QUALITY AND COMPUTATION COMPLEXITY IN VIDEO CODECS 审中-公开
公开(公告)号：WO2021076822A1
公开(公告)日：2021-04-22
申请号：PCT/US2020/055864
申请日：2020-10-16
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： SONG, Qing , RAJ, Arun , SU, Guan-Ming
IPC分类号： H04N19/98 , H04N19/30 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/85
摘要： A backward reshaping mapping table is initially generated as an inverse of a forward reshaping mapping table. The backward reshaping mapping table is updated by replacing the content-mapped luminance codewords with forward reshaped luminance codewords generated by applying a luminance forward mapping to the sampled luminance codewords. The luminance forward mapping is constructed from the forward reshaping mapping table. The backward reshaping mapping table and the luminance forward mapping are used to generate backward reshaping mappings for creating a reconstructed image from a forward reshaped image. The forward reshaped image is encoded, in a video signal, along with image metadata specifying the backward reshaping mappings. A recipient device of the video signal applies the backward reshaping mappings to the forward reshaped image to create the reconstructed image of the second dynamic range.

20. 发明申请

WO2020086421A1 VIDEO ENCODING AND DECODING USING BLOCK-BASED IN-LOOP RESHAPING 审中-公开
公开(公告)号：WO2020086421A1
公开(公告)日：2020-04-30
申请号：PCT/US2019/057128
申请日：2019-10-21
申请人： INTERDIGITAL VC HOLDINGS, INC.
发明人： FRANCOIS, Edouard , CHEVANCE, Christophe , HIRON, Franck
IPC分类号： H04N19/117 , H04N19/136 , H04N19/176 , H04N19/182 , H04N19/184 , H04N19/30 , H04N19/82 , H04N19/98
摘要： Different implementations are described, particularly implementations for video encoding and decoding using a block-adaptive mapping for reshaping. The method for encoding and/or decoding a block of a picture comprises: determining one or more values characterizing samples of a block; modifying the determined values using a mapping function; deriving from the modified values one or more block-dependent parameters of a parametric function that approximates the mapping function; and mapping samples of the block using the parametric function and the derived one or more block-dependent parameters.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式