公开(公告)号：US20130083838A1

公开(公告)日：2013-04-04

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: H04N11/02

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: 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

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

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

IPC: H04N7/26 ,  H04N7/46 ,  H04N7/32

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110293247A1

公开(公告)日：2011-12-01

申请号：US13138384

申请日：2010-01-05

Applicant: Sitaram Bhagavathy ,  Joan Llach

Inventor： Sitaram Bhagavathy ,  Joan Llach

IPC: G11B27/00

CPC classification number: G06T7/254 ,  G06T7/174 ,  G06T2207/10016 ,  G06T2207/20092 ,  G06T2207/20096

Abstract: 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.

Abstract translation: 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：US08014558B2

公开(公告)日：2011-09-06

申请号：US11246474

申请日：2005-10-07

Applicant: Jeffrey Allen Cooper ,  Joan Llach ,  Cristina Gomila

Inventor： Jeffrey Allen Cooper ,  Joan Llach ,  Cristina Gomila

IPC: G06K9/00

CPC classification number: G06T5/002 ,  G06F17/30784 ,  G06T2207/10016 ,  G06T2207/20204 ,  G11B27/031 ,  H04N5/775 ,  H04N9/8715 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/467 ,  H04N19/85

Abstract: The present invention provides a method, apparatus and system for providing fast access to film grain patterns in a film grain simulation process including providing a first memory storing at least one film grain pattern and in response to a film grain pattern required by the film grain simulation process not being stored in the first memory, updating the first memory to obtain at least the required film grain pattern from at least a second memory. In one embodiment, the first memory is a local cache, the second memory is a film grain pattern database and a controller causes the examination of the local cache for a particular film grain pattern required in the film grain simulation process. In response to the required film grain pattern not being stored in the local cache, the controller causes the update of the local cache using the film grain pattern database.

Abstract translation: 本发明提供了一种用于在胶片颗粒模拟过程中提供对胶片颗粒图案的快速访问的方法，装置和系统，包括提供存储至少一个胶片颗粒图案的第一存储器和响应于胶片颗粒模拟所需的胶片颗粒图案 处理不被存储在第一存储器中，更新第一存储器以从至少第二存储器获得至少所需的胶片颗粒图案。 在一个实施例中，第一存储器是本地高速缓存，第二存储器是胶片颗粒图案数据库，并且控制器对胶片颗粒模拟过程中所需的特定胶片颗粒图案的本地高速缓存进行检查。 响应于所需的胶片颗粒图案不存储在本地高速缓存中，控制器使用胶片颗粒图案数据库来使本地高速缓存更新。

公开(公告)号：US07982743B2

公开(公告)日：2011-07-19

申请号：US11251696

申请日：2005-10-17

Applicant: Jeffrey Allen Cooper ,  Joan Llach ,  Cristina Gomila

Inventor： Jeffrey Allen Cooper ,  Joan Llach ,  Cristina Gomila

IPC: G09G5/00

CPC classification number: G06T5/002 ,  G06F17/30784 ,  G06T2207/10016 ,  G06T2207/20204 ,  G11B27/031 ,  H04N5/775 ,  H04N9/8715 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/467 ,  H04N19/85

Abstract: The present invention provides a method and apparatus for reading film grain patterns in a raster order in film grain simulation including establishing a pseudo-random starting position, repeating the pseudo-random starting position for each line of a group of film grain blocks, and using a different pseudo-random starting position for each display line of a next group of film grain blocks. In various embodiments of the present invention, the different pseudo-random starting positions are triggered by resetting at least one seed value of a pseudo-random number generator implemented to determine said pseudo-random starting positions.

Abstract translation: 本发明提供了一种用于在胶片颗粒模拟中以光栅顺序读取胶片颗粒图案的方法和装置，包括建立伪随机开始位置，重复一组胶片颗粒块的每一行的伪随机起始位置，以及使用 对于下一组胶片颗粒块的每个显示线的不同的伪随机开始位置。 在本发明的各种实施例中，不同的伪随机起始位置通过复位实现以确定所述伪随机起始位置的伪随机数发生器的至少一个种子值来触发。

公开(公告)号：US20110026607A1

公开(公告)日：2011-02-03

申请号：US12736496

申请日：2009-04-07

Applicant: Sitaram Bhagavathy ,  Joan Llach ,  Yu Huang

Inventor： Sitaram Bhagavathy ,  Joan Llach ,  Yu Huang

IPC: H04N7/26 ,  G06K9/40 ,  H04N5/21

CPC classification number: G06T5/002 ,  G06T5/003 ,  G06T5/20 ,  G06T2207/10016 ,  H04N19/119 ,  H04N19/124 ,  H04N19/162 ,  H04N19/167 ,  H04N19/17 ,  H04N19/20 ,  H04N19/46 ,  H04N19/80 ,  H04N19/85

Abstract: The visibility of an object in a digital picture is enhanced by comparing an input video of the digital picture with stored information representative of the nature and characteristics of the object to develop object localization information that identifies and locates the object. The input video and the object localization information are encoded and transmitted to a receiver where the input video and the object localization information are decoded and the decoded input video is enhanced by the decoded object localization information

Abstract translation: 通过将数字图像的输入视频与表示对象的性质和特征的存储信息进行比较，以开发识别和定位对象的对象定位信息来增强数字图像中对象的可视性。 输入视频和对象定位信息被编码并发送到接收机，其中输入视频和对象定位信息被解码，并且解码的输入视频被解码的对象定位信息增强

公开(公告)号：US20100098307A1

公开(公告)日：2010-04-22

申请号：US12450410

申请日：2007-11-06

Applicant: Yu Huang ,  Joan Llach ,  Sitaram Bhagavathy

Inventor： Yu Huang ,  Joan Llach ,  Sitaram Bhagavathy

IPC: G06K9/62

CPC classification number: G06K9/00711 ,  G06K9/44 ,  G06K9/4652

Abstract: A method is disclosed for detecting and locating players in soccer video frames without errors caused by artifacts by a shape analysis-based approach to identify the players and the ball from roughly extracted foregrounds obtained by color segmentation and connected component analysis, by performing a Euclidean distance transform to extract skeletons for every foreground blob, by performing a shape analysis to remove false alarms (non-players and non-ball), and then by performing skeleton pruning and a reverse Euclidean distance transform to cut-off the artifacts primarily caused by playing field lines.

Abstract translation: 公开了一种用于通过基于形状分析的方法来检测和定位足球视频帧中的玩家而产生错误的方法，以通过执行欧几里德距离从颜色分割和连接分量分析获得的大致提取的前景识别玩家和球， 通过执行形状分析来消除假警报（非玩家和非球），然后通过执行骨架修剪和反向欧几里得距离变换来截取主要由玩耍造成的伪影，从而转换为每个前景斑点提取骨架 现场线。

公开(公告)号：US20100067802A1

公开(公告)日：2010-03-18

申请号：US12312743

申请日：2007-11-30

Applicant: Yu Huang ,  Joan Llach

Inventor： Yu Huang ,  Joan Llach

IPC: G06K9/46

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

Abstract: An implementation provides a method for estimating a location for an object in a particular image of a sequence of images. The location is estimated using a particle-based framework, such as a particle filter. It is determined that the estimated location for the object in the particular image is occluded. A trajectory is estimated for the object based on one or more previous locations of the object in one or more previous images in the sequence of images. The estimated location of the object is changed based on the estimated trajectory.

Abstract translation: 实现提供了一种用于估计图像序列的特定图像中的对象的位置的方法。 使用基于粒子的框架（如粒子滤波器）来估计位置。 确定特定图像中对象的估计位置被遮挡。 基于图像序列中的一个或多个先前图像中的物体的一个或多个先前位置来估计对象的轨迹。 基于估计的轨迹改变对象的估计位置。

公开(公告)号：US07680356B2

公开(公告)日：2010-03-16

申请号：US10575501

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: G06K9/40

CPC classification number: H04N5/262 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10016 ,  G06T2207/20204 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/85 ,  H04N19/86

Abstract: The addition of comfort noise to an image serves to hide compression artifacts. To facilitate comfort noise addition, supplemental information accompanying a video image contains at least one parameter that specifies an attribute regarding comfort noise. Typically, the supplemental information includes parameters that function to turn the comfort noise on and off, as well as to indicate the level of noise to add, based on the expected level of compression artifacts.

Abstract translation: 向图像添加舒适噪声用于隐藏压缩伪影。 为了促进舒适噪声添加，附带视频图像的补充信息包含至少一个指定关于舒适噪声的属性的参数。 通常，补充信息包括用于打开和关闭舒适噪声的参数，以及基于预期的压缩伪像水平来指示要添加的噪声的水平。

公开(公告)号：US20070047658A1

公开(公告)日：2007-03-01

申请号：US10572690

申请日：2004-09-21

Applicant: Alexandros Tourapis ,  Jill MacDonald ,  Joan Llach

Inventor： Alexandros Tourapis ,  Jill MacDonald ,  Joan Llach

IPC: H04N11/02 ,  H04B1/66

CPC classification number: H04N19/85 ,  G06T5/001 ,  G06T2207/20204 ,  H04N5/21 ,  H04N5/4401 ,  H04N19/86 ,  Y02E60/324

Abstract: A decoding arrangement for decoding pictures in an incoming video stream includes a noise generator for adding a dither signal containing random noise to the pictures after video decoding, to improve the subjective video quality. The noise generator adds noise to each pixel in an amount correlated to the luminance of at least a portion of the current picture.

Abstract translation: 用于对输入视频流中的图像进行解码的解码装置包括：噪声发生器，用于在视频解码之后将包含随机噪声的抖动信号加到图像上，以改善主观视频质量。 噪声发生器以与当前图像的至少一部分的亮度相关的量向每个像素增加噪声。