公开(公告)号：US20110211643A1

公开(公告)日：2011-09-01

申请号：US12932062

申请日：2011-02-16

申请人： Hua Yang ,  Richard Edwin Goedeken ,  Joan Llach

发明人： Hua Yang ,  Richard Edwin Goedeken ,  Joan Llach

IPC分类号： H04N7/24

CPC分类号： H04N19/60 ,  H04N19/115 ,  H04N19/124 ,  H04N19/149 ,  H04N19/156 ,  H04N19/187 ,  H04N19/192 ,  H04N19/30

摘要： A method and apparatus are disclosed and described for providing bit rate configuration for multi-view video coding. In the video encoder, the method includes encoding image data for at least one picture for at least two joint views of multi-view video content, the at least two joint views including a base view and at least one dependent view. The bit rate configuration for encoding the image data is determined to include an average bit rate and a maximum bit rate for the base view and the average bit rate and the maximum bit rate for the at least two joint views (235, 215, 220).

摘要翻译： 公开和描述了一种用于提供用于多视点视频编码的比特率配置的方法和装置。 在视频编码器中，该方法包括编码用于多视点视频内容的至少两个联合视图的至少一个图像的图像数据，该至少两个关节视图包括基本视图和至少一个从属视图。 确定用于编码图像数据的比特率配置被确定为包括用于基本视图的平均比特率和最大比特率以及用于至少两个关节视图（235,215,220）的平均比特率和最大比特率， 。

公开(公告)号：US20100329557A1

公开(公告)日：2010-12-30

申请号：US12803371

申请日：2010-06-25

申请人： Zhe Wang ,  Jiefu Zhai ,  Joan Llach

发明人： Zhe Wang ,  Jiefu Zhai ,  Joan Llach

IPC分类号： G06K9/34

CPC分类号： G06K9/6223 ,  G06K9/6226 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/20208 ,  H04N1/40062 ,  H04N1/4074

摘要： A method of segmenting regions of an image wherein a number of partitions are determined based on a range of an image histogram in a logarithmic luminance domain. Regions are defined by the partitions. A mean value of each region is calculated by K-means clustering wherein the clustering is initialized, data is assigned and centroids are updated. Anchor points are determined based on the centroids and a weight of each pixel is computed based on the anchor points.

摘要翻译： 一种分割图像区域的方法，其中基于对数亮度域中的图像直方图的范围来确定多个分区。 区域由分区定义。 通过K-means聚类计算每个区域的平均值，其中初始化聚类，分配数据并更新质心。 根据重心确定锚点，并根据锚点计算每个像素的重量。

公开(公告)号：US20090304270A1

公开(公告)日：2009-12-10

申请号：US12449046

申请日：2008-01-18

申请人： Sitaram Bhagavathy ,  Joan Llach ,  Jie fu Zhai

发明人： Sitaram Bhagavathy ,  Joan Llach ,  Jie fu Zhai

IPC分类号： G06K9/00 ,  G06K9/40

CPC分类号： G06T5/002 ,  G06T2207/10024 ,  H04N1/409

摘要： One or more implementations access a digital image containing one or more bands. Adjacent bands of the one or more bands have a difference in color resulting in a contour between the adjacent bands. The one or more implementations apply an algorithm to at least a portion of the digital image for reducing visibility of a contour. The algorithm is based on a value representing the fraction of pixels in a region of the digital image having a particular color value.

摘要翻译： 一个或多个实现访问包含一个或多个频带的数字图像。 一个或多个频带的相邻频带具有不同的颜色，导致相邻频带之间的轮廓。 所述一个或多个实现将算法应用于数字图像的至少一部分，以减少轮廓的可视性。 该算法基于表示具有特定颜色值的数字图像的区域中的像素的分数的值。

公开(公告)号：US20090278988A1

公开(公告)日：2009-11-12

申请号：US12308914

申请日：2006-06-29

申请人： Sitaram Bhagavathy ,  Joan Llach

发明人： Sitaram Bhagavathy ,  Joan Llach

IPC分类号： H04N5/222

CPC分类号： H04N5/21 ,  G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20182 ,  H04N19/105 ,  H04N19/117 ,  H04N19/162 ,  H04N19/182 ,  H04N19/537 ,  H04N19/593 ,  H04N19/86

摘要： In an implementation, a pixel is selected from a target digital image. Multiple candidate pixels, from one or more digital images, are evaluated based on values of the multiple candidate pixels. For the selected pixel, a corresponding set of pixels is determined from the multiple candidate pixels based on the evaluations of the multiple candidate pixels and on whether a predetermined threshold number of pixels have been included in the corresponding set. Further for the selected pixel, a substitute value is determined based on the values of the pixels in the corresponding set of pixels. Various implementations described provide adaptive pixel-based spatio-temporal filtering of images or video to reduce film grain or noise. Implementations may achieve an “even” amount of noise reduction at each pixel while preserving as much picture detail as possible by, for example, averaging each pixel with a constant number, N, of temporally and/or spatially correlated pixels.

摘要翻译： 在实现中，从目标数字图像中选择像素。 基于多个候选像素的值来评估来自一个或多个数字图像的多个候选像素。 对于所选择的像素，基于多个候选像素的评估以及相应组中是否包括预定阈值数量的像素，从多个候选像素确定相应的像素集合。 此外，对于所选择的像素，基于相应像素集合中的像素的值来确定替代值。 所描述的各种实现提供了对图像或视频的自适应基于像素的时空滤波以减少胶片颗粒或噪声。 实施方式可以在每个像素处实现“均匀”的噪声降低量，同时通过例如使用恒定数量N对时间和/或空间相关像素对每个像素进行平均，尽可能地保留尽可能多的图像细节。

公开(公告)号：US10108314B2

公开(公告)日：2018-10-23

申请号：US13805185

申请日：2011-06-23

申请人： Jiefu Zhai ,  Joan Llach ,  Zhe Wang

发明人： Jiefu Zhai ,  Joan Llach ,  Zhe Wang

IPC分类号： G06F3/048 ,  G06F3/00 ,  G06K9/00 ,  G06F3/0484 ,  G06T5/00 ,  G06T5/40

摘要： A tone mapping graphical user interface (GUI) is provided that allows a video engineer to process a video using a set of tools for changing high dynamic range data into lower dynamic range data. The tone mapping GUI includes a video player region that includes the current video output section for a region-based method of performing HDR conversion, and a current video output section for a reference method that performs HDR conversion using, for example, a global process.

公开(公告)号：US09087382B2

公开(公告)日：2015-07-21

申请号：US13381224

申请日：2010-06-29

申请人： Jiefu Zhai ,  Joan Llach

发明人： Jiefu Zhai ,  Joan Llach

IPC分类号： G09G5/02 ,  G06T5/00

CPC分类号： G06T5/008 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20208

摘要： A method of tone mapping high dynamic range images for display on low dynamic range displays wherein a high dynamic range image is first accessed. The high dynamic range image is segmented into different regions such that each region is represented by a matrix, where each element of the matrix is a weight or probability of a pixel. An exposure of each region is determined or calculated and the exposure values are applied to the regions responsive to the weight or probability. The different regions are then fused together to obtain a final tone mapped image.

摘要翻译： 一种色调映射高动态范围图像的方法，用于在低动态范围显示器上显示，其中首先访问高动态范围图像。 高动态范围图像被分割成不同的区域，使得每个区域由矩阵表示，其中矩阵的每个元素是像素的权重或概率。 确定或计算每个区域的曝光，并且将曝光值应用于响应于重量或概率的区域。 然后将不同的区域融合在一起以获得最终的色调映射图像。

公开(公告)号：US08611728B2

公开(公告)日：2013-12-17

申请号：US13138384

申请日：2010-01-05

申请人： Sitaram Bhagavathy ,  Joan Llach

发明人： Sitaram Bhagavathy ,  Joan Llach

IPC分类号： H04N5/93 ,  H04N9/80 ,  G11B27/00 ,  G06K9/34 ,  G06K9/00 ,  G06K9/74 ,  G06G5/00

CPC分类号： G06T7/254 ,  G06T7/174 ,  G06T2207/10016 ,  G06T2207/20092 ,  G06T2207/20096

摘要： A method for propagating user-provided foreground-background constraint information for a first video frame to subsequent frames allows extraction of moving foreground objects with minimal user interaction. Video matting is performed wherein constraints derived from user input with respect to a first frame are propagated to subsequent frames using the estimated alpha matte of each frame. The matte of a frame is processed in order to arrive at a rough foreground-background segmentation which is then used for estimating the matte of the next frame. At each frame, the propagated constraints are used by an image matting method for estimating the corresponding matte which is in turn used for propagating the constraints to the next frame, and so on.

摘要翻译： 用于将第一视频帧的用户提供的前景 - 背景约束信息传播到后续帧的方法允许以最小的用户交互提取移动的前景对象。 执行视频消隐，其中从相对于第一帧的用户输入导出的约束使用每帧的估计的α遮罩传播到后续帧。 处理帧的哑光以便获得粗糙的前景 - 背景分割，然后将其用于估计下一帧的无光泽。 在每个帧处，通过图像消隐方法使用传播的约束来估计相应的无光泽，其依次用于将约束传播到下一帧，等等。

公开(公告)号：US08467626B2

公开(公告)日：2013-06-18

申请号：US12311452

申请日：2007-06-25

申请人： Sitaram Bhagavathy ,  Joan Llach

发明人： Sitaram Bhagavathy ,  Joan Llach

IPC分类号： G06K9/40 ,  G06K9/20

CPC分类号： G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20182

摘要： One particular automatic parameter estimation method and apparatus estimates low level filtering parameters from one or more user controlled high-level filtering parameters. The high level filtering parameters are strength and quality, where strength indicates how much noise reduction will be performed, and quality indicates a tolerance which controls the balance between filtering uniformity and loss of detail. The low level filtering parameters that can be estimated include the spatial neighborhood and/or temporal neighborhood size from which pixel candidates are selected, and thresholds used to verify the “goodness” of the spatially or temporally predicted candidate pixels. More generally, a criterion for filtering digital image data is accessed, and a value is determined for a parameter for use in filtering digital image data, the value being determined based on whether the value results in the criterion being satisfied for at least a portion of a digital image.

公开(公告)号：US20130083838A1

公开(公告)日：2013-04-04

申请号：US13618403

申请日：2012-09-14

申请人： David Touze ,  Yannick Olivier ,  Philippe Bordes ,  Dominique Thoreau ,  Joan Llach

发明人： David Touze ,  Yannick Olivier ,  Philippe Bordes ,  Dominique Thoreau ,  Joan Llach

IPC分类号： H04N11/02

CPC分类号： H04N5/2355 ,  H04N5/2356 ,  H04N5/3456 ,  H04N5/355 ,  H04N19/33 ,  H04N19/46 ,  H04N19/59 ,  H04N19/70 ,  H04N19/98

摘要： The invention is made in the field of coding of images of high dynamic range.The invention is based on the concept of Frame Compatible format. The idea is to transport, in a frame, down-sampled LDR content together with additional information allowing reconstructing HDR content from the LDR content. Thus, it is proposed a method of encoding an HDR image of high dynamic range according to claim 1. Said method comprises down-sampling (DWN) an LDR image and additional data, the LDR image providing a lower dynamic range depiction of the HDR image content and the additional data allowing for reconstructing the HDR image from the LDR image.

摘要翻译： 本发明是在高动态范围图像编码领域进行的。 本发明基于帧兼容格式的概念。 这个想法是以一帧的方式传送下采样的LDR内容以及允许从LDR内容重建HDR内容的附加信息。 因此，提出了根据权利要求1对高动态范围的HDR图像进行编码的方法。所述方法包括下采样（DWN）LDR图像和附加数据，LDR图像提供HDR图像的较低动态范围描绘 内容和允许从LDR图像重建HDR图像的附加数据。

公开(公告)号：US20120294369A1

公开(公告)日：2012-11-22

申请号：US13574428

申请日：2011-01-20

申请人： Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

发明人： Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

IPC分类号： H04N7/26 ,  H04N7/46 ,  H04N7/32

CPC分类号： H04N19/577 ,  H04N19/119 ,  H04N19/12 ,  H04N19/132 ,  H04N19/137 ,  H04N19/172 ,  H04N19/20 ,  H04N19/33 ,  H04N19/46 ,  H04N19/527 ,  H04N19/537 ,  H04N19/573 ,  H04N19/59

摘要： Methods and apparatus are provided for sampling-based super resolution video encoding and decoding. The encoding method receives high resolution pictures and generates low resolution pictures and metadata there from, the metadata for guiding post-decoding post-processing of the low resolution pictures and the metadata; and then encodes the low resolution pictures and the metadata using at least one encoder. The corresponding decoding method receives a bitstream and decodes low resolution pictures and metadata there from using a decoder; and then reconstructs high resolution pictures respectively corresponding to the low resolution pictures using the low resolution pictures and the metadata.

摘要翻译： 提供了基于采样的超分辨率视频编码和解码的方法和装置。 编码方法接收高分辨率图像，并从其中生成低分辨率图像和元数据，用于引导低分辨率图像的后解码后处理的元数据和元数据; 然后使用至少一个编码器对低分辨率图像和元数据进行编码。 相应的解码方法接收比特流并且使用解码器解码低分辨率图像和元数据; 然后使用低分辨率图像和元数据重建分别对应于低分辨率图像的高分辨率图像。