-
21.发明申请Technique for film grain simulation using a database of film grain patterns 审中-公开使用胶片颗粒图案数据库进行胶片颗粒模拟的技术公开(公告)号：US20070117291A1
公开(公告)日：2007-05-24
申请号：US10581151
申请日：2004-12-01
申请人： Jeffrey Cooper , Jill Boyce , Alexandros Tourapis , Cristina Gomila , Joan Llach , Peng Yin
发明人： Jeffrey Cooper , Jill Boyce , Alexandros Tourapis , Cristina Gomila , Joan Llach , Peng Yin
CPC分类号： G06T11/00 , G06T5/002 , G06T2207/20021 , G06T2207/20204 , H04N5/262 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/46 , H04N19/85
摘要： 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.
摘要翻译： 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：US20080152250A1
公开(公告)日：2008-06-26
申请号：US11667846
申请日：2005-09-26
IPC分类号： G06K9/40
CPC分类号： G06T5/10 , G06T5/002 , G06T2207/10016 , G06T2207/20052 , G06T2207/20204 , H04N19/46 , H04N19/467 , H04N19/85
摘要： The simulation of film grain in a video image occurs by first creating a block (i.e., a matrix array) of transformed coefficients for a set of cut frequencies fHL, fVL, fHH and fVH associated with a desired grain pattern. (The cut frequencies fHL, fVL, fHH and fVH represent cut-off frequencies, in two dimensions, of a filter that characterizes the desired film grain pattern). The block of transformed coefficients undergoes an inverse transform to yield a bit-accurate film grain sample and the bit accurate sample undergoes scaling to enable blending with a video signal to simulate film grain in the signal.
摘要翻译： 视频图像中的胶片颗粒的模拟是通过首先为一组切割频率f LF，V V L和V L而产生变换系数的块（即，矩阵阵列） ，f H HH和f V H H N，与期望的颗粒图案相关联。 （截止频率f L HL，f VL，f HH和f H V H表示截止频率，在 表示所需胶片颗粒图案的过滤器的两个尺寸）。 变换后的系数块进行逆变换以产生位精确的胶片颗粒样品，并且比特精确的样本进行缩放以使得能够与视频信号混合以模拟信号中的胶片颗粒。
-
23.发明申请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确的电影粒度模拟方法公开(公告)号：US20070269125A1
公开(公告)日：2007-11-22
申请号：US11667629
申请日：2005-10-26
申请人： Joan Llach , Cristina Gomila , Jeffrey Cooper
发明人： Joan Llach , Cristina Gomila , Jeffrey Cooper
CPC分类号： G06T5/10 , G06T5/002 , G06T2207/10016 , G06T2207/20052 , G06T2207/20204 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/46 , H04N19/80 , H04N19/85
摘要： Bit-accurate creation of a film grain pattern 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.
摘要翻译： 通过首先建立一组比特精确的变换系数来产生胶片颗粒图案的位精确的创建。 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。
-
公开(公告)号：US20070058866A1
公开(公告)日：2007-03-15
申请号：US10575501
申请日：2004-10-12
申请人： Jill Boyce , Cristina Gomila , Joan Llach , Alexandros Tourapis , Jeffrey Cooper , Peng Yin
发明人： Jill Boyce , Cristina Gomila , Joan Llach , Alexandros Tourapis , Jeffrey Cooper , Peng Yin
IPC分类号： G06K9/00
CPC分类号： H04N5/262 , G06T5/002 , G06T5/20 , G06T2207/10016 , G06T2207/20204 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/46 , H04N19/85 , H04N19/86
摘要： 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.
摘要翻译： 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。
-
25.发明授权Methods, apparatus and system for film grain cache splitting for film grain simulation 有权胶片颗粒高速分割用于胶片颗粒模拟的方法，装置和系统公开(公告)号：US08483288B2
公开(公告)日：2013-07-09
申请号：US11284378
申请日：2005-11-21
IPC分类号： H04N7/12
CPC分类号： G06T5/002 , G06T2207/20204 , H04N19/423 , H04N19/61 , H04N19/80
摘要： The present invention provides a method, apparatus and system for film grain cache splitting for film grain simulation. In one embodiment of the present invention a method for storing film grain patterns includes storing at least a first portion of film grain patterns in an internal memory and storing at least a second portion of the film grain patterns in an external memory. That is, in the present invention a method for film grain cache splitting for film grain simulation includes splitting the storage of film grain patterns between an internal cache and an external memory. In one embodiment of the present invention, the internal cache is integrated into an integrated circuit chip of a decoder.
摘要翻译： 本发明提供了一种胶片颗粒高速缓冲分割用于胶片颗粒模拟的方法，装置和系统。 在本发明的一个实施例中，用于存储胶片颗粒图案的方法包括将至少第一部分胶片颗粒图案存储在内部存储器中，并将胶片颗粒图案的至少第二部分存储在外部存储器中。 也就是说，在本发明中，用于胶片颗粒模拟的胶片颗粒高速缓存分割的方法包括分割内部高速缓存和外部存储器之间的胶片颗粒图案的存储。 在本发明的一个实施例中，内部高速缓存集成到解码器的集成电路芯片中。
-
公开(公告)号：US08023567B2
公开(公告)日：2011-09-20
申请号：US11285540
申请日：2005-11-22
IPC分类号： H04N7/12
CPC分类号： 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
摘要： 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.
摘要翻译： 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。
-
27.发明授权Method and apparatus for modeling film grain patterns in the frequency domain 有权用于在频域中建模胶片颗粒图案的方法和装置公开(公告)号：US07738721B2
公开(公告)日：2010-06-15
申请号：US10569318
申请日：2004-04-07
申请人： Cristina Gomila , Joan Llach
发明人： Cristina Gomila , Joan Llach
CPC分类号： G06T5/002 , G06T5/10 , G06T2207/10016 , G06T2207/20204 , H04N19/467 , H04N19/70 , H04N19/86
摘要： 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.
摘要翻译： 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。
-
28.发明申请Method and apparatus for modelling film grain patterns in the frequency domain 有权用于在频域中建模胶片颗粒图案的方法和装置公开(公告)号：US20060292837A1
公开(公告)日：2006-12-28
申请号：US10569318
申请日：2004-04-07
申请人： Cristina Gomila , Joan Llach
发明人： Cristina Gomila , Joan Llach
IPC分类号： H01L21/20
CPC分类号： G06T5/002 , G06T5/10 , G06T2207/10016 , G06T2207/20204 , H04N19/467 , H04N19/70 , H04N19/86
摘要： 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.
摘要翻译： 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：US20060115175A1
公开(公告)日：2006-06-01
申请号：US11284378
申请日：2005-11-21
申请人： Jeffrey Cooper , Cristina Gomila , Joan Llach
发明人： Jeffrey Cooper , Cristina Gomila , Joan Llach
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T2207/20204 , H04N19/423 , H04N19/61 , H04N19/80
摘要： The present invention provides a method, apparatus and system for film grain cache splitting for film grain simulation. In one embodiment of the present invention a method for storing film grain patterns includes storing at least a first portion of film grain patterns in an internal memory and storing at least a second portion of the film grain patterns in an external memory. That is, in the present invention a method for film grain cache splitting for film grain simulation includes splitting the storage of film grain patterns between an internal cache and an external memory. In one embodiment of the present invention, the internal cache is integrated into an integrated circuit chip of a decoder.
-
公开(公告)号：US20060083314A1
公开(公告)日：2006-04-20
申请号：US11246474
申请日：2005-10-07
申请人： Jeffrey Cooper , Joan Llach , Cristina Gomila
发明人： Jeffrey Cooper , Joan Llach , Cristina Gomila
CPC分类号： G06T5/002 , G06F17/30784 , G06T2207/10016 , G06T2207/20204 , G11B27/031 , H04N5/775 , H04N9/8715 , H04N19/423 , H04N19/44 , H04N19/46 , H04N19/467 , H04N19/85
摘要： 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.
摘要翻译： 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。
-
-
-
-
-
-
-
-
-
搜索结果
119 条记录 (耗时 0.023 秒)