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：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。

公开(公告)号：US20090251490A1

公开(公告)日：2009-10-08

申请号：US12227465

申请日：2007-05-08

Applicant: Dekun Zou ,  Jun Tian ,  Jiefu Zhai ,  Jeffrey Adam Bloom ,  Joan Llach

Inventor： Dekun Zou ,  Jun Tian ,  Jiefu Zhai ,  Jeffrey Adam Bloom ,  Joan Llach

IPC: G09G5/00

CPC classification number: H04N1/32251 ,  H04N1/32309 ,  H04N2201/3205 ,  H04N2201/3214 ,  H04N2201/3215 ,  H04N2201/323 ,  H04N2201/3236 ,  H04N2201/3239

Abstract: Information available at a decoder is embedded into image content after decoding by first representing that information by at least one film grain pattern and then blending that at least one film grain pattern with the decoded image content. Such image content is typically in the form of a movie and examples of the information to be embedded include identification of the specific decoding device, the user of the decoding device, the time and date of decoding, the model number of the device, the versions of software running on the device, the status of the device or connections to the device, the contents of device registers or memory locations within the device, among many other possible data. When an unauthorized copy of image content is discovered, the copied image content undergoes a comparison to the decoded image content to generate difference data. Thereafter, the difference data undergoes comparison with a database of film grain patterns to recover the embedded data.

Abstract translation: 通过首先通过至少一个胶片颗粒图案表示该信息，然后将该至少一个胶片颗粒图案与解码的图像内容进行混合，将解码器可用的信息嵌入到解码之后的图像内容中。 这样的图像内容通常是电影的形式，并且要嵌入的信息的示例包括特定解码装置的识别，解码装置的用户，解码的时间和日期，装置的型号，版本 在设备上运行的软件，设备的状态或与设备的连接，设备寄存器的内容或设备内的存储器位置以及许多其他可能的数据。 当发现图像内容的未授权复制时，复制的图像内容经历与解码图像内容的比较以产生差异数据。 此后，差分数据与胶片颗粒图案的数据库进行比较以恢复嵌入数据。

公开(公告)号：US20060292837A1

公开(公告)日：2006-12-28

申请号：US10569318

申请日：2004-04-07

Applicant: Cristina Gomila ,  Joan Llach

Inventor： Cristina Gomila ,  Joan Llach

IPC: H01L21/20

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：US20060193526A1

公开(公告)日：2006-08-31

申请号：US10563711

申请日：2004-05-28

Applicant: Jill Boyce ,  Joan Llach

Inventor： Jill Boyce ,  Joan Llach

IPC: G06K9/36

CPC classification number: H04N19/117 ,  H04N19/139 ,  H04N19/176

Abstract: Noise reduction is achieved during video encoding with low complexity by making use of the motion estimation decision sets for noise reduction. Motion estimation is performed N times (where N is integer) on each macroblock to yield N sets of motion estimation data, each set including a reference picture index and a motion vector. Typically, although not necessarily, each set of motion estimation data makes use of a different reference picture. For each macroblock, the N sets of motion estimation data are used to create a noise-reduced macroblock, which is then encoded.

Abstract translation: 通过利用用于降噪的运动估计决策集，在低复杂度的视频编码期间实现降噪。 在每个宏块上执行N次（其中N是整数）的运动估计，以产生N组运动估计数据，每组包括参考图像索引和运动矢量。 通常，虽然不一定，每组运动估计数据使用不同的参考图片。 对于每个宏块，N组运动估计数据用于创建噪声降低的宏块，然后对其进行编码。