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。

公开(公告)号：US09554056B2

公开(公告)日：2017-01-24

申请号：US13618403

申请日：2012-09-14

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

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

IPC: H04N7/12 ,  H04N5/235 ,  H04N5/355 ,  H04N19/70 ,  H04N19/46 ,  H04N19/33 ,  H04N19/98 ,  H04N19/59 ,  H04N5/345

CPC classification number: H04N5/2355 ,  H04N5/2356 ,  H04N5/3456 ,  H04N5/355 ,  H04N19/33 ,  H04N19/46 ,  H04N19/59 ,  H04N19/70 ,  H04N19/98

Abstract: 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.

Abstract translation: 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：US20130091430A1

公开(公告)日：2013-04-11

申请号：US13805185

申请日：2011-06-23

Applicant: Jiefu Zhai ,  Joan Llach ,  Zhe Wang

Inventor： Jiefu Zhai ,  Joan Llach ,  Zhe Wang

IPC: G06F3/0484

CPC classification number: G06F3/0484 ,  G06T5/007 ,  G06T5/40 ,  G06T2200/24 ,  G06T2207/10016 ,  G06T2207/20092 ,  G06T2207/20208

Abstract: A tone mapping graphical user interface 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.

Abstract translation: 提供了一种色调映射图形用户界面，其允许视频工程师使用一组用于将高动态范围数据改变为较低动态范围数据的工具来处理视频。

公开(公告)号：US08345975B2

公开(公告)日：2013-01-01

申请号：US12803371

申请日：2010-06-25

Applicant: Zhe Wang ,  Jiefu Zhai ,  Joan Llach

Inventor： Zhe Wang ,  Jiefu Zhai ,  Joan Llach

IPC: G06K9/34

CPC classification number: G06K9/6223 ,  G06K9/6226 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/20208 ,  H04N1/40062 ,  H04N1/4074

Abstract: 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.

Abstract translation: 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：US20120263437A1

公开(公告)日：2012-10-18

申请号：US13516228

申请日：2010-12-10

Applicant: Jesus Barcons-Palau ,  Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

Inventor： Jesus Barcons-Palau ,  Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

IPC: H04N9/80

CPC classification number: G06K9/00711 ,  G06K9/00335 ,  G06K9/00724 ,  G06K9/033 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/30228 ,  G06T2207/30241

Abstract: A method and associated apparatus for using a trajectory-based technique to detect a moving object in a video sequence at incorporates human interaction through a user interface. The method comprises steps of identifying and evaluating sets of connected components in a video frame, filtering the list of connected components by comparing features of the connected components to predetermined criteria, identifying candidate trajectories across multiple frames, evaluating the candidate trajectories to determine a selected trajectory, eliminating incorrect trajectories through use of the interface and processing images in said video sequence responsive to the evaluating and eliminating steps.

Abstract translation: 一种用于使用基于轨迹的技术来检测视频序列中的移动对象的方法和相关联的装置，其通过用户界面并入人类交互。 该方法包括以下步骤：识别和评估视频帧中的连接分量集合，通过将所连接分量的特征与预定标准进行比较来过滤所连接分量的列表，识别跨多个帧的候选轨迹，评估候选轨迹以确定所选择的轨迹 通过使用界面消除不正确的轨迹，并响应于评估和消除步骤来处理所述视频序列中的图像。

公开(公告)号：US08159606B2

公开(公告)日：2012-04-17

申请号：US12460814

申请日：2009-07-24

Applicant: Joel Sole ,  Joan Llach

Inventor： Joel Sole ,  Joan Llach

IPC: H04N7/01 ,  H04N11/20

CPC classification number: G06T3/4007

Abstract: A method and apparatus are provided for reversible, polynomial based image scaling. The apparatus includes a video scaler for performing image scaling from a first base resolution image to a higher resolution image, and from the higher resolution image to a second base resolution image. The first and the second base resolution images are equal on a pixel-by-pixel basis for an entirety of the first and the second base resolution images. A scaling function used for the image scaling is based on a polynomial function having two or more degrees.

Abstract translation: 提供了一种用于可逆的，基于多项式的图像缩放的方法和装置。 该装置包括用于执行从第一基本分辨率图像到较高分辨率图像以及从较高分辨率图像到第二基本分辨率图像的图像缩放的视频缩放器。 对于第一和第二基本分辨率图像的整体，第一和第二基本分辨率图像在逐个像素的基础上是相等的。 用于图像缩放的缩放函数基于具有两度或更多度的多项式函数。