公开(公告)号：US20120113130A1

公开(公告)日：2012-05-10

申请号：US13381224

申请日：2010-06-29

Applicant: Jiefu Zhai ,  Joan Llach

Inventor： Jiefu Zhai ,  Joan Llach

IPC: G09G5/02

CPC classification number: G06T5/008 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20208

Abstract: 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.

Abstract translation: 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：US08023567B2

公开(公告)日：2011-09-20

申请号：US11285540

申请日：2005-11-22

Applicant: Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper

Inventor： Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper

IPC: H04N7/12

CPC classification number: H04N5/262 ,  G06T5/002 ,  G06T2207/10016 ,  G06T2207/20204 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/46 ,  H04N19/59 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85 ,  H04N19/86

Abstract: Simulation of a block of film grain for addition to a block of an image occurs by first establishing at least one parameter at least in part in accordance with an attribute of the image block. At least one at least one block of film grain is simulated from at least one film grain pattern generated in accordance with the at least one parameter. In particular, the film grain pattern is generated using a bit accurate technique.

Abstract translation: 通过首先至少部分地根据图像块的属性建立至少一个参数来模拟用于添加到图像块的胶片颗粒块。 根据至少一个参数产生的至少一个胶片颗粒图案来模拟至少一个至少一个胶片颗粒块。 特别地，使用比特精确技术产生胶片颗粒图案。

公开(公告)号：US20110211634A1

公开(公告)日：2011-09-01

申请号：US12932169

申请日：2011-02-18

Applicant: Richard Edwin Goedeken ,  Joan Llach

Inventor： Richard Edwin Goedeken ,  Joan Llach

IPC: H04N7/24 ,  H04N7/26

CPC classification number: H04N19/597 ,  H04N21/2365 ,  H04N21/4347 ,  H04N21/4882 ,  H04N21/84 ,  H04N21/8451

Abstract: A method and apparatus are disclosed and described for providing Offset Metadata insertion in multi-view coded video. The apparatus includes an offset metadata inserter (235) for receiving a first bitstream compressed using a single-view based two-dimensional video compression scheme, a second bitstream compressed using a multi-view based two-dimensional video compression scheme, and disparity information, and outputting a third bitstream based on the first bitstream, the second bitstream, and the disparity information. Each of the first bitstream, the second bitstream, and the disparity information correspond to a same video sequence. The third bitstream includes group of pictures information extracted from the first bitstream and underlying content of the video sequence at least some of which is extracted from the second bitstream. The third bitstream has embedded therein one or more messages that specify the disparity information for use in overlaying information on the underlying content of the video sequence during a subsequent displaying of the overlaying information on the underlying content.

Abstract translation: 公开和描述了一种用于在多视图编码视频中提供偏移元数据插入的方法和装置。 该装置包括用于接收使用基于单视图的二维视频压缩方案压缩的第一比特流的偏移元数据插入器（235），使用基于多视图的二维视频压缩方案压缩的第二比特流和视差信息， 以及基于所述第一比特流，所述第二比特流和所述视差信息输出第三比特流。 第一比特流，第二比特流和视差信息中的每一个对应于相同的视频序列。 第三比特流包括从第一比特流提取的图像组信息以及视频序列的底层内容，其中至少一些是从第二比特流中提取的。 第三比特流在其中嵌入了一个或多个消息，其指定在随后显示关于底层内容的重叠信息的视频序列的底层内容上叠加信息时使用的视差信息。

公开(公告)号：US20110157229A1

公开(公告)日：2011-06-30

申请号：US12737890

申请日：2009-08-28

Applicant: Zefeng Ni ,  Dong Tian ,  Sitaram Bhagavathy ,  Joan Llach

Inventor： Zefeng Ni ,  Dong Tian ,  Sitaram Bhagavathy ,  Joan Llach

IPC: G09G5/00

CPC classification number: H04N13/128 ,  H04N13/111 ,  H04N2213/003 ,  H04N2213/005

Abstract: Various implementations are described. Several implementations relate to view synthesis with heuristic view blending for 3D Video (3DV) applications. According to one aspect, at least one reference picture, or a portion thereof, is warped from at least one reference view location to a virtual view location to produce at least one warped reference. A first candidate pixel and a second candidate pixel are identified in the at least one warped reference. The first candidate pixel and the second candidate pixel are candidates for a target pixel location in a virtual picture from the virtual view location. A value for a pixel at the target pixel location is determined based on values of the first and second candidate pixels.

Abstract translation: 描述各种实施方式。 几个实现涉及用于3D视频（3DV）应用的启发式视图混合的视图合成。 根据一个方面，至少一个参考图片或其一部分从至少一个参考视图位置扭曲到虚拟视图位置以产生至少一个翘曲参考。 在所述至少一个翘曲参考中识别第一候选像素和第二候选像素。 第一候选像素和第二候选像素是来自虚拟视图位置的虚拟图像中的目标像素位置的候选。 基于第一和第二候选像素的值来确定目标像素位置处的像素的值。

公开(公告)号：US07889939B2

公开(公告)日：2011-02-15

申请号：US10571148

申请日：2004-09-22

Applicant: Joan Llach ,  Jill MacDonald Boyce ,  Alexandros Tourapis

Inventor： Joan Llach ,  Jill MacDonald Boyce ,  Alexandros Tourapis

IPC: G06K9/40 ,  G06T5/00 ,  H04N17/00 ,  H04N17/02

CPC classification number: H04N5/262 ,  G06T5/002 ,  G06T5/10 ,  G06T11/001 ,  G06T2207/20021 ,  G06T2207/20052 ,  G06T2207/20204 ,  H04N19/86

Abstract: Simulation of film grain in an image can occur by compressing a video image, then transmitting compressed video together with a message containing at least one parameter indicative of the original film grain, to a decoder, and restoring the original grainy appearance of images by having the decoder simulating film grain based on the content of the film grain message. To improve efficiency, one or more parameters of film grain information undergo scaling in accordance with a target pixel block size for pixel blocks in the image. Such scaling allows for the use of conventional circuitry for performing block-based operations in connection with the film grain simulation.

Abstract translation: 图像中的胶片颗粒的模拟可以通过压缩视频图像，然后将压缩视频与包含至少一个表示原始胶片颗粒的参数的消息一起发送到解码器，并且通过使图像恢复原始的颗粒状外观， 基于胶片信息内容的解码器模拟胶片颗粒。 为了提高效率，胶片颗粒信息的一个或多个参数根据图像中的像素块的目标像素块尺寸进行缩放。 这种缩放允许使用常规电路来执行与胶片颗粒模拟相关的基于块的操作。

公开(公告)号：US07738721B2

公开(公告)日：2010-06-15

申请号：US10569318

申请日：2004-04-07

Applicant: Cristina Gomila ,  Joan Llach

Inventor： Cristina Gomila ,  Joan Llach

IPC: G06K9/00 ,  G06K9/40 ,  G06K9/38 ,  G09G5/00 ,  G06T15/50 ,  G06T15/60 ,  H04N5/262 ,  H04N9/74

CPC classification number: G06T5/002 ,  G06T5/10 ,  G06T2207/10016 ,  G06T2207/20204 ,  H04N19/467 ,  H04N19/70 ,  H04N19/86

Abstract: Film grain patterns can be modeled in the frequency domain by estimating the cut frequencies that define a 2D band-pass filter. The film grain parameters can be conveyed in accordance with the ITU-T H.264|MPEG-4 AVC standard in an SEI message allowing film grain reinsertion at a decoder.

Abstract translation: 通过估计定义2D带通滤波器的切割频率，可以在频域中建模胶片颗粒图案。 可以根据ITU-T H.264 | MPEG-4AVC标准在SEI消息中传送胶片颗粒参数，从而允许在解码器处重新插入胶片。

公开(公告)号：US20100142808A1

公开(公告)日：2010-06-10

申请号：US12448966

申请日：2008-01-18

Applicant: Sitaram Bhagavat ,  Joan Llach ,  Zhai Jie Fu

Inventor： Sitaram Bhagavat ,  Joan Llach ,  Zhai Jie Fu

IPC: G06K9/46

CPC classification number: G06T5/002 ,  G06T2207/10024 ,  H04N1/409

Abstract: One or more implementations access a digital image and determine whether at least one portion of the digital image includes one or more bands having a difference in color. The determination is based on at least two candidate scales. One or more implementations access a digital image and assess at least a portion of the digital image for the existence of one or more bands having a difference in color. The assessing includes determining a fraction of pixels in the portion having a color value offset by an offset value from a color value of a particular pixel in the portion.

Abstract translation: 一个或多个实现访问数字图像并确定数字图像的至少一部分是否包括具有不同颜色的一个或多个频带。 该决定基于至少两个候选量表。 一个或多个实现访问数字图像并且评估数字图像的至少一部分是否存在具有不同颜色的一个或多个频带。 评估包括确定具有偏移值的部分中的像素的一部分中的像素的部分中的特定像素的颜色值。

公开(公告)号：US20100128789A1

公开(公告)日：2010-05-27

申请号：US12451264

申请日：2008-04-25

Applicant: Joel Sole ,  Yu Huang ,  Joan Llach

Inventor： Joel Sole ,  Yu Huang ,  Joan Llach

IPC: H04N7/30 ,  H04N7/26 ,  H04N7/64

CPC classification number: G06T7/2006 ,  G06T5/005 ,  G06T7/194 ,  G06T7/215 ,  G06T2207/10016

Abstract: A method for processing a video sequence having a plurality of frames includes the steps of: extracting features from each of the frames, determining correspondences between the extracted features from two of the frames, estimating motion in the video sequence based on the determined correspondences, generating a background mosaic for the video sequence based on the estimated motion, and performing foreground-background segmentation on each of the frames based on the background mosaic.

Abstract translation: 一种用于处理具有多个帧的视频序列的方法包括以下步骤：从每个帧中提取特征，确定来自两帧中提取的特征之间的对应关系，基于所确定的对应度估计视频序列中的运动，产生 基于估计运动的视频序列的背景马赛克，以及基于背景马赛克对每个帧执行前景背景分割。

公开(公告)号：US20100054536A1

公开(公告)日：2010-03-04

申请号：US12312737

申请日：2007-11-30

Applicant: Yu Huang ,  Joan Llach

Inventor： Yu Huang ,  Joan Llach

IPC: G06K9/00

CPC classification number: G06K9/32 ,  G06K2009/3291 ,  G06T7/277 ,  G06T2207/10016 ,  G06T2207/30224 ,  G06T2207/30241

Abstract: An implementation provides a method including forming a metric surface in a particle-based framework for tracking an object, the metric surface relating to a particular image in a sequence of digital images. Multiple hypotheses are formed of a location of the object in the particular image, based on the metric surface. The location of the object is estimated based on probabilities of the multiple hypotheses.

Abstract translation: 实现提供了一种方法，包括在用于跟踪对象的基于粒子的框架中形成度量表面，该度量表面与数字图像序列中的特定图像相关。 基于公制表面，由特定图像中对象的位置形成多个假设。 基于多个假设的概率来估计对象的位置。

公开(公告)号：US20090324121A1

公开(公告)日：2009-12-31

申请号：US12311452

申请日：2007-06-25

Applicant: Sitaram Bhagavathy ,  Joan Llach

Inventor： Sitaram Bhagavathy ,  Joan Llach

IPC: G06K9/40

CPC classification number: G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20182

Abstract: 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.

Abstract translation: 一种特定的自动参数估计方法和装置从一个或多个用户控制的高级过滤参数估计低级过滤参数。 高电平滤波参数是强度和质量，其中强度指示将执行多少降噪，并且质量表示控制滤波均匀性和细节损失之间的平衡的公差。 可以估计的低电平滤波参数包括从其选择像素候选的空间邻域和/或时间邻域大小，以及用于验证空间或时间预测候选像素的“良好”的阈值。 更一般地，访问用于过滤数字图像数据的标准，并且确定用于过滤数字图像数据的参数的值，该值是基于该值是否导致对至少一部分 数字图像。