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公开(公告)号：US10108314B2
公开(公告)日：2018-10-23
申请号：US13805185
申请日：2011-06-23
Applicant: Jiefu Zhai , Joan Llach , Zhe Wang
Inventor： Jiefu Zhai , Joan Llach , Zhe Wang
Abstract: A tone mapping graphical user interface (GUI) 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. The tone mapping GUI includes a video player region that includes the current video output section for a region-based method of performing HDR conversion, and a current video output section for a reference method that performs HDR conversion using, for example, a global process.
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公开(公告)号：US09117260B2
公开(公告)日：2015-08-25
申请号：US11252320
申请日：2005-10-17
Applicant: Jeffrey Allen Cooper , Joan Llach , Cristina Gomila
Inventor： Jeffrey Allen Cooper , Joan Llach , Cristina Gomila
IPC: H04N11/02 , H04N11/04 , H04N7/12 , H04B1/66 , G06T5/00 , H04N19/46 , H04N19/44 , H04N19/467 , H04N19/423 , H04N19/85
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 methods for determining block averages in film grain simulation including determining block averages during a display process and determining block averages during a decoding process. The methods of the present invention exhibit different characteristics in terms of memory requirements and computational cost. More specifically, the first method uses no external memory, but requires either extra reads of the blocks, or internal memory in the display pipeline, while the second method requires extra memory bandwidth and extra external memory (e.g., RAM).
Abstract translation: 本发明提供用于确定胶片颗粒模拟中的块平均的方法，包括在显示处理期间确定块平均值，并在解码过程期间确定块平均值。 本发明的方法在记忆要求和计算成本方面表现出不同的特征。 更具体地说，第一种方法不使用外部存储器，但是需要对显示管道中的块或内部存储器进行额外读取，而第二种方法需要额外的存储器带宽和额外的外部存储器（例如，RAM）。
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43.发明授权Bit-accurate film grain simulation method based on pre-computed transformed coefficients 有权基于预先计算的变换系数的位精度胶片颗粒模拟方法公开(公告)号：US09098916B2
公开(公告)日：2015-08-04
申请号：US11667629
申请日：2005-10-26
Applicant: Joan Llach , Cristina Gomila , Jeffrey Allen Cooper
Inventor： Joan Llach , Cristina Gomila , Jeffrey Allen Cooper
IPC: G06K9/36 , G06K9/40 , G06T5/10 , G06T5/00 , H04N19/176 , H04N19/46 , H04N19/117 , H04N19/136 , H04N19/80 , H04N19/85
CPC classification number: G06T5/10 , G06T5/002 , G06T2207/10016 , G06T2207/20052 , G06T2207/20204 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/46 , H04N19/80 , H04N19/85
Abstract: Creation of a Bit-accurate film grain pattern for blending in an image block occurs by first establishing a set of bit-accurate transformed coefficients. The set of bit-accurate transformed coefficients undergo frequency filtering and a subsequent bit-accurate inverse transformation to yield the film grain pattern. The film grain pattern can then undergo blending with an image block to restore the look of film to the image.
Abstract translation: 通过首先建立一组比特精确的变换系数，产生用于在图像块中混合的比特精确的胶片颗粒图案。 位精度变换系数的集合经历频率滤波和随后的比特精确逆变换以产生胶片颗粒图案。 然后可以将胶片颗粒图案与图像块进行混合，以恢复胶片对图像的外观。
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公开(公告)号：US09087382B2
公开(公告)日：2015-07-21
申请号：US13381224
申请日：2010-06-29
Applicant: Jiefu Zhai , Joan Llach
Inventor： Jiefu Zhai , Joan Llach
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。
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公开(公告)号：US08611728B2
公开(公告)日：2013-12-17
申请号：US13138384
申请日：2010-01-05
Applicant: Sitaram Bhagavathy , Joan Llach
Inventor： Sitaram Bhagavathy , Joan Llach
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。
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Patent Agency Ranking
公开(公告)号：US08467626B2
公开(公告)日：2013-06-18
申请号：US12311452
申请日：2007-06-25
Applicant: Sitaram Bhagavathy , Joan Llach
Inventor： Sitaram Bhagavathy , Joan Llach
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.
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47.发明授权Film grain simulation for normal play and trick mode play for video playback systems 有权视频播放系统的正常播放和特技模式播放的胶片颗粒模拟公开(公告)号：US08447124B2
公开(公告)日：2013-05-21
申请号：US11268070
申请日：2005-11-07
Applicant: Joan Llach , Jeffrey Allen Cooper , Cristina Gomila
Inventor： Joan Llach , Jeffrey Allen Cooper , Cristina Gomila
CPC classification number: H04N5/783 , G06T5/002 , G06T5/10 , G06T2207/10016 , G06T2207/20204 , H04N9/8042 , H04N19/117 , H04N19/159 , H04N19/172 , H04N19/44 , H04N19/46 , H04N19/61 , H04N19/85 , H04N19/86
Abstract: There is provided method and apparatus for film grain simulation for normal play and trick mode play for video playback systems. A method for simulating film grain in video includes the step of performing (214) film grain simulation on a sequence of decoded video pictures in decode order.
Abstract translation: 提供了用于视频播放系统的正常播放和特技模式播放的胶片颗粒模拟的方法和装置。 用于模拟视频中的胶片颗粒的方法包括以解码顺序对解码的视频图像序列执行（214）胶片颗粒模拟的步骤。
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48.发明申请METHOD OF AND DEVICE FOR ENCODING AN HDR IMAGE, METHOD OF AND DEVICE FOR RECONSTRUCTING AN HDR IMAGE AND NON-TRANSITORY STORAGE MEDIUM 有权用于编码HDR图像的方法和装置，用于重建HDR图像和非存储存储介质的方法和装置公开(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。
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49.发明申请METHODS AND APPARATUS FOR SAMPLING-BASED SUPER RESOLUTION VIDEO ENCODING AND DECODING 有权基于采样的超分辨率视频编码和解码的方法和装置公开(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
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。
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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。
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