公开(公告)号：US08532375B2

公开(公告)日：2013-09-10

申请号：US12448966

申请日：2008-01-18

Applicant: Sitaram Bhagavathy ,  Joan Llach ,  Zhai Jie Fu

Inventor： Sitaram Bhagavathy ,  Joan Llach ,  Zhai Jie Fu

IPC: G06K9/00

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：US08447127B2

公开(公告)日：2013-05-21

申请号：US12589217

申请日：2009-10-20

Applicant: Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper

Inventor： Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper

IPC: G06K9/46 ,  G06K9/66 ,  G06K9/62 ,  G06K9/40 ,  H04N7/01 ,  H04N11/20 ,  H04N1/32 ,  H04N1/41 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66 ,  G06K9/36

CPC classification number: H04N5/262 ,  G06T5/002 ,  G06T2207/10016 ,  G06T2207/20204 ,  H04N19/117 ,  H04N19/176 ,  H04N19/46 ,  H04N19/467 ,  H04N19/80 ,  H04N19/85 ,  H04N19/86

Abstract: Briefly, in accordance with a preferred embodiment of the present principles, simulation of a block of film grain for addition to a block of an image occurs by first establishing at least one image parameter in accordance with at least one attribute of the block. Thereafter, a block of film grain is established in accordance with the image parameter. Deblocking filtering can be applied to the film grain block.

Abstract translation: 简而言之，根据本原理的优选实施例，通过首先根据块的至少一个属性建立至少一个图像参数来发生用于添加到图像块的胶片颗粒块的模拟。 此后，根据图像参数建立胶片颗粒块。 去块滤波可以应用于胶片颗粒块。

公开(公告)号：US08346009B2

公开(公告)日：2013-01-01

申请号：US12803370

申请日：2010-06-25

Applicant: Jiefu Zhai ,  Joan Llach ,  Zhe Wang

Inventor： Jiefu Zhai ,  Joan Llach ,  Zhe Wang

IPC: G06K9/36

CPC classification number: H04N5/202 ,  G09G3/2003 ,  G09G2340/0428 ,  G09G2340/06

Abstract: A method for tone mapping high dynamic range images for display on low dynamic range displays wherein high dynamic range images are first accessed. The high dynamic range images are divided the 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 value. An exposure of each region is determined or calculated by estimating an anchor point in each region such that most pixels in each region are mapped to mid grey and the anchor points are adjusted to a key of the images to preserve overall brightness. The regions are then placed or mapped to zones and exposure values are applied to the regions responsive to the weight or probability. The regions are fused together to obtain a final tone mapped image.

Abstract translation: 一种用于将高动态范围图像进行色调映射以在低动态范围显示器上显示的方法，其中首先访问高动态范围图像。 高动态范围图像被划分成不同的区域，使得每个区域由矩阵表示，其中矩阵的每个元素是像素值的权重或概率。 通过估计每个区域中的锚点来确定或计算每个区域的曝光，使得每个区域中的大多数像素被映射到中间灰色，并且将锚点调整为图像的关键以保持整体亮度。 然后将区域放置或映射到区域，并且响应于重量或概率将曝光值应用于区域。 将这些区域融合在一起以获得最终的色调映射图像。

公开(公告)号：US20120320153A1

公开(公告)日：2012-12-20

申请号：US13580757

申请日：2010-12-20

Applicant: Jesus Barcons-Palau ,  Joan Llach

Inventor： Jesus Barcons-Palau ,  Joan Llach

IPC: H04N13/00

CPC classification number: G06T7/33 ,  G06T2207/10021 ,  H04N13/10 ,  H04N13/156 ,  H04N13/183 ,  H04N13/361

Abstract: In various embodiment of the present invention, the difference of disparity between subtitles in stereoscopic content along time is restrained by a function of time and disparity. This guarantees that two consecutive subtitles will have similar disparity if they are close in time. More specifically, a method for the positioning of subtitles in stereoscopic content includes estimating a position for a subtitle in at least one frame of the stereoscopic content and restraining a difference in disparity between subtitles in at least two frames by a function of time and disparity. In such an embodiment, the estimating can include computing a disparity value for the subtitle using a disparity of an object in a region in the at least one frame in which the subtitle is to be inserted. The subtitle can then be adjusted to be in front of or behind the object.

Abstract translation: 在本发明的各种实施例中，随时间和视差的函数来限制立体内容中的字幕与时间的差异。 这确保了两个连续的字幕在时间上是接近的时候会有相似的差异。 更具体地说，用于在立体内容中定位字幕的方法包括估计立体内容的至少一帧中的字幕的位置，并且通过时间和视差的函数来抑制至少两帧中的字幕之间的差异的差异。 在这样的实施例中，估计可以包括使用要插入字幕的至少一个帧中的区域中的对象的视差来计算字幕的视差值。 然后可以将字幕调整为在对象的前面或后面。

公开(公告)号：US20120288015A1

公开(公告)日：2012-11-15

申请号：US13522024

申请日：2011-01-21

Applicant: Dong-Qing Zhang ,  Sitaram Bhagavathy ,  Joan Llach

Inventor： Dong-Qing Zhang ,  Sitaram Bhagavathy ,  Joan Llach

IPC: H04N7/12

CPC classification number: H04N19/105 ,  H04N7/0125 ,  H04N7/54 ,  H04N19/139 ,  H04N19/14 ,  H04N19/146 ,  H04N19/149 ,  H04N19/152 ,  H04N19/154 ,  H04N19/46 ,  H04N19/59 ,  H04N19/94

Abstract: Methods and apparatuses for data pruning for video compression using example-based super resolution are provided. A method and apparatus for encoding is provided in which patches of video are extracted from input video, grouped together using a clustering method, and representative patches are packed into patch frames. The original video is downsized and sent either along with, or in addition to, the patch frames. At a decoder, the method and apparatus provided extract patches from the patch frames and create a patch library. The regular video frames are upsized and the low resolution patches are replaced by patches from the patch library by searching the library using the patches in the decoded regular frames as keywords. If there are no appropriate patches, no replacement is made. A post processing procedure is used to enhance the spatiotemporal smoothness of the recovered video.

Abstract translation: 提供了使用基于示例的超分辨率进行视频压缩的数据剪枝的方法和装置。 提供了一种用于编码的方法和装置，其中使用聚类方法从输入视频中提取视频片段，将其分组在一起，并将代表性的片段打包到片段中。 原始视频被缩小，并且或者与补丁帧一起发送。 在解码器中，所提供的方法和装置从补丁帧提取补丁并创建补丁库。 常规视频帧大小，低分辨率补丁由补丁库中的补丁替换，通过使用解码的常规帧中的补丁作为关键字搜索库。 如果没有适当的补丁，则不进行更换。 后处理程序用于增强恢复的视频的时空平滑度。

公开(公告)号：US08238613B2

公开(公告)日：2012-08-07

申请号：US10575676

申请日：2004-10-12

Applicant: Jill MacDonald Boyce ,  Cristina Gomila ,  Joan Llach ,  Alexandros Michael Tourapis ,  Jeffrey Allen Cooper ,  Peng Yin

Inventor： Jill MacDonald Boyce ,  Cristina Gomila ,  Joan Llach ,  Alexandros Michael Tourapis ,  Jeffrey Allen Cooper ,  Peng Yin

IPC: G06K9/00

CPC classification number: H04N5/262 ,  G06T5/002 ,  G06T5/10 ,  G06T2207/20021 ,  G06T2207/20052 ,  G06T2207/20204 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/85

Abstract: The simulation of film grain in an image makes use of parameters contained in a Supplemental Enhancement Information (SEI) message that accompanies the image upon transmission. The SEI message specifies film grain simulation parameters such as the film simulation model, the blending mode, and color space.

Abstract translation: 图像中的胶片颗粒的模拟利用包含在补充增强信息（SEI）消息中的参数，该信息伴随着传输时的图像。 SEI消息指定胶片模拟参数，如电影模拟模型，混合模式和颜色空间。

公开(公告)号：US20120144304A1

公开(公告)日：2012-06-07

申请号：US13389465

申请日：2009-08-12

Applicant: Ju Guo ,  Ying Luo ,  Joan Llach

Inventor： Ju Guo ,  Ying Luo ,  Joan Llach

IPC: G06F3/01

CPC classification number: G06T7/20

Abstract: A system and method reduce artifacts in images in a manner that efficiently incorporates user feedback, minimizes user effort, and adaptively processes images. According to one exemplary embodiment, the method includes executing an algorithm to remove artifacts in a first region of a first frame, regions outside of the first region being unaffected; identifying a second region of a second frame following the first frame, the second region of the second frame corresponding to the first region of the first frame; displaying the second frame with an indication of the second region; receiving a first user input defining a third region inside the second region; and executing the algorithm to remove artifacts in the second region excluding the third region.

Abstract translation: 系统和方法以有效地结合用户反馈，最小化用户努力和自适应地处理图像的方式减少图像中的伪像。 根据一个示例性实施例，所述方法包括执行算法以去除第一帧的第一区域中的伪像，所述第一区域之外的区域不受影响; 识别在所述第一帧之后的第二帧的第二区域，所述第二帧的所述第二区域对应于所述第一帧的所述第一区域; 用第二区域的指示显示第二帧; 接收限定第二区域内的第三区域的第一用户输入; 以及执行所述算法以去除除了所述第三区域之外的所述第二区域中的伪影。

公开(公告)号：US20120056906A1

公开(公告)日：2012-03-08

申请号：US13148819

申请日：2010-02-09

Applicant: Jiefu Zhai ,  Joan Llach

Inventor： Jiefu Zhai ,  Joan Llach

IPC: G09G5/10

CPC classification number: G09G3/3426 ,  G09G2320/0646 ,  G09G2360/16

Abstract: A method of operating a high dynamic range display device comprises the steps of: accessing an image signal; generating an intermediate backlighting driver signal for individual backlight elements for a backlighting unit responsive to the image signal; convoluting the intermediate backlighting driver signals with a point spread function of the backlighting unit; deriving at least one new backlighting driver signal responsive to the convoluting step; determining display error associated with a plurality of available light shutter signals of a front-end unit having individual light shutters and associated with the at least one new backlighting driver signal, the front-end unit having a higher resolution than the backlighting unit; driving the display device with a combination of shutter signals and new backlighting driver signals that causes a reduction in the display error with respect to other generated intermediate backlighting driver signals and other available light shutter signals.

Abstract translation: 操作高动态范围显示装置的方法包括以下步骤：访问图像信号; 针对所述图像信号产生用于背光单元的各个背光元件的中间背光驱动器信号; 用背光单元的点扩散函数对中间背光驱动器信号进行卷积; 响应于所述卷积步骤导出至少一个新的背光驱动器信号; 确定与具有各个光闸的前端单元的多个可用光快门信号相关联的显示误差，并与所述至少一个新的背光驱动器信号相关联，所述前端单元具有比所述背光单元更高的分辨率; 通过组合快门信号和新的背光驱动器信号来驱动显示设备，这导致相对于其他产生的中间背光驱动器信号和其它可用光快门信号的显示误差的降低。

公开(公告)号：US07852409B2

公开(公告)日：2010-12-14

申请号：US11273067

申请日：2005-11-14

Applicant: Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper ,  Jill MacDonald Boyce

Inventor： Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper ,  Jill MacDonald Boyce

IPC: G06F7/58 ,  H04N9/74

CPC classification number: G06F7/582 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/85

Abstract: There are provided methods and apparatus for bit-accurate seed initialization for pseudo-random number generators used in a video system. A method includes the steps of creating (205) a look-up table of PRNG seeds, and initializing (210) one of the PRNG seeds from the look-up table for a picture by accessing the look-up table using a value corresponding to an order of the picture.

Abstract translation: 提供了用于在视频系统中使用的伪随机数发生器的比特精确种子初始化的方法和装置。 一种方法包括以下步骤：创建（205）PRNG种子的查找表，以及通过使用对应于...的值访问查找表，从图形的查找表中初始化（210）PRNG种子之一 照片的顺序。

公开(公告)号：US20070117291A1

公开(公告)日：2007-05-24

申请号：US10581151

申请日：2004-12-01

Applicant: Jeffrey Cooper ,  Jill Boyce ,  Alexandros Tourapis ,  Cristina Gomila ,  Joan Llach ,  Peng Yin

Inventor： Jeffrey Cooper ,  Jill Boyce ,  Alexandros Tourapis ,  Cristina Gomila ,  Joan Llach ,  Peng Yin

IPC: H01L33/00 ,  H01L21/84

CPC classification number: G06T11/00 ,  G06T5/002 ,  G06T2207/20021 ,  G06T2207/20204 ,  H04N5/262 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/85

Abstract: Individual pixels in an image block undergo blending with film grain from a film grain block randomly selected from among a pool of previously established film grain blocks in accordance with a luma characteristic of the image block. Prior to blending, the selected film grain block undergoes deblocking by a deblocking filter (28). Following blending, a clipper clips the individual pixels prior to display. The pool of film grain blocks is created by scaling a set of film grain patterns in accordance with at least one parameter of a film grain information message that accompanies the image block.

Abstract translation: 根据图像块的亮度特性，图像块中的各个像素经历与从先前建立的胶片颗粒块池中随机选择的胶片颗粒块的胶片颗粒混合。 在混合之前，所选择的胶片颗粒块通过去块过滤器（28）进行解块。 混合之后，剪辑器会在显示之前剪辑各个像素。 通过根据伴随图像块的胶片颗粒信息消息的至少一个参数缩放一组胶片颗粒图案来创建胶片颗粒块的池。