公开(公告)号：US20050243215A1

公开(公告)日：2005-11-03

申请号：US10837835

申请日：2004-05-03

申请人： Daniel Doswald ,  Patrick Ng

发明人： Daniel Doswald ,  Patrick Ng

IPC分类号： H04N5/44 ,  H04N7/01 ,  H04N5/217

CPC分类号： H04N7/0115 ,  H04N7/012

摘要： A film mode detector detects film mode of a series of fields of video by comparing pixels in a field adjacent the current field, with corresponding pixels directly above and directly below the pixels in an adjacent field. The number of pixels in the adjacent in time to the current field having (or not having) a value approximately between values of the pixels above and below in the current field is assessed. Film mode for a current field may be detected by monitoring the assessment from field to field. Alternatively or additionally, the detector may detect film mode by assessing for each current field, whether a relatively large or relatively small number of pixels in the immediately previous field have values outside a specified distance of values of a corresponding pixel in the immediately subsequent field, for at least a portion of the immediately previous and subsequent fields. Again, film mode may be detected by monitoring this second assessment from field to field.

摘要翻译： 电影模式检测器通过将与当前场相邻的场中的像素与相邻场中的像素正上方和正下方的像素进行比较，来检测一系列视频的胶片模式。 评估与当前场中具有（或不具有）像素高于和低于的像素值之间的值的当前场的相邻时间中的相邻像素的数量。 可以通过监视从场到场的评估来检测当前场的胶片模式。 或者或另外，检测器可以通过评估每个当前场来检测胶片模式，无论在紧接的前一场中相对较大或相对较少数量的像素是否具有在紧随其后的场中相应像素的特定距离值之外的值， 对于紧接的前一个和后续的场的至少一部分。 再次，可以通过从现场到场监视该第二评估来检测电影模式。

公开(公告)号：US08134640B2

公开(公告)日：2012-03-13

申请号：US11616188

申请日：2006-12-26

申请人： Daniel Doswald

发明人： Daniel Doswald

IPC分类号： H04N7/01

CPC分类号： H04N7/0112 ,  H04N7/0127 ,  H04N7/0137

摘要： A video processor, upstream of a frame rate converter determines video attribute data. This attribute data is formatted and passed along a channel to the frame rate converter. The frame rate converter extracts the attribute data from the channel for use in frame rate conversion. The frame rate converter may thus rely on attribute data obtained by the video processor, and need not re-analyze video frames.

摘要翻译： 帧速率转换器上游的视频处理器确定视频属性数据。 该属性数据被格式化并且沿着一个通道传送到帧速率转换器。 帧频转换器从频道中提取属性数据以用于帧速率转换。 因此，帧速率转换器可以依赖于由视频处理器获得的属性数据，并且不需要重新分析视频帧。

公开(公告)号：US20080151109A1

公开(公告)日：2008-06-26

申请号：US11616192

申请日：2006-12-26

申请人： Daniel Doswald

发明人： Daniel Doswald

IPC分类号： H04N7/01

CPC分类号： H04N7/0135 ,  H04N7/0115 ,  H04N7/0127 ,  H04N7/0147

摘要： A frame rate converter sequentially buffers video frames in a sequence of video frames in a buffer and interpolates at least two of the plurality of video frames in the buffer based on at least one interpolation parameter, to form interpolated output frames. Conveniently, the interpolation parameter is adjusted with each newly buffered frame in dependence on the current value of the cadence of the frame sequence. In this way, delays associated with cadence detection may be reduced.

摘要翻译： 帧速率转换器顺序地缓冲在缓冲器中的视频帧序列中的视频帧，并且基于至少一个内插参数内插缓冲器中的多个视频帧中的至少两个，以形成内插的输出帧。 方便地，根据帧序列的节奏的当前值，每个新缓存的帧调整插值参数。 以这种方式，可以减少与节奏检测有关的延迟。

公开(公告)号：US20110001873A1

公开(公告)日：2011-01-06

申请号：US12727796

申请日：2010-03-19

申请人： Daniel Doswald ,  Michael Joseph Erwin ,  Samir Narayan Hulyalkar

发明人： Daniel Doswald ,  Michael Joseph Erwin ,  Samir Narayan Hulyalkar

IPC分类号： H04N7/01

CPC分类号： H04N7/013

摘要： A frame rate converter device and method for interpolation during frame rate conversion are disclosed. The method includes, receiving input frames containing film content and video content. The film content exhibits a 3:2 pull-down cadence while video content that does not exhibit such cadence. Consecutive frames Cn and Cn+1 are interpolated to form Fn using the frame rate converter. The frame rate converter further selects as an output frame, either current or previous ones of interpolated frames or input frames. The selection is made so as to reduce both film judder and video judder. The invention is suitable for use on video input frames at 60 frames per second (fps) derived from a 24 fps cinema using 3:2 pull-down, and also blended with 60 Hz overlay video such as subtitle text. The invention can be used to obtain a good overall reduction in both overlay video judder and film judder.

摘要翻译： 公开了一种帧速率转换器装置和帧速转换时的插值方法。 该方法包括：接收包含电影内容和视频内容的输入帧。 电影内容呈现出3：2的下拉式节奏，而视频内容则不表现出这样的节奏。 连续帧Cn和Cn + 1被内插以使用帧速率转换器形成Fn。 帧速率转换器进一步选择内插帧或输入帧中的当前帧或前一帧的输出帧。 进行选择以减少胶片抖动和视频抖动。 本发明适用于从使用3：2下拉的24 fps影院得到的每秒60帧（fps）的视频输入帧，并且与60Hz重叠视频（例如字幕文本）混合使用。 本发明可以用于在重叠视频抖动和胶片抖动中获得良好的整体减小。

公开(公告)号：US20080151108A1

公开(公告)日：2008-06-26

申请号：US11616188

申请日：2006-12-26

申请人： Daniel Doswald

发明人： Daniel Doswald

IPC分类号： H04N11/22

CPC分类号： H04N7/0112 ,  H04N7/0127 ,  H04N7/0137

摘要： A video processor, upstream of a frame rate converter determines video attribute data. This attribute data is formatted and passed along a channel to the frame rate converter. The frame rate converter extracts the attribute data from the channel for use in frame rate conversion. The frame rate converter may thus rely on attribute data obtained by the video processor, and need not re-analyze video frames.

摘要翻译： 帧速率转换器上游的视频处理器确定视频属性数据。 该属性数据被格式化并且沿着一个通道传送到帧速率转换器。 帧频转换器从频道中提取属性数据以用于帧速率转换。 因此，帧速率转换器可以依赖于由视频处理器获得的属性数据，并且不需要重新分析视频帧。

公开(公告)号：US20070258014A1

公开(公告)日：2007-11-08

申请号：US11381234

申请日：2006-05-02

申请人： Daniel Doswald

发明人： Daniel Doswald

IPC分类号： H04N5/14

CPC分类号： H04N17/00 ,  H04N7/0115 ,  H04N7/012

摘要： A field sequence detector determines the field sequence of a series of fields of video by assessing the vertical frequency content of hypothetical de-interlaced images. Hypothetical images are formed from a currently processed field and an adjacent (e.g. previous or next) field. If the vertical frequency content is relatively high (e.g. above ½ the Nyquist frequency for the image), the hypothetical image is assessed to be formed of improperly interlaced fields, belonging to different frames. If the frequency content is relatively low, the hypothetical image is assessed to be properly assembled from fields of the same frame. The field sequence in the series of fields may be detected from the assessed frequency content for several of said series of fields. Known field sequence, such as 3:2 pull-down, 2:2 pull down, and more generally m:n:l:k pull-down sequences.

摘要翻译： 场序列检测器通过评估假设的去隔行扫描图像的垂直频率内容来确定一系列视频场的场序列。 假设图像由当前处理的场和相邻（例如前一个或下一个）场形成。 如果垂直频率含量相对较高（例如，高于图像的奈奎斯特频率的1/2），则假设图像被评估为由属于不同帧的不适当隔行场组成。 如果频率含量相对较低，则假设图像被评估为从相同帧的场适当组合。 可以从所述系列场中的几个的评估频率内容中检测一系列场中的场序列。 已知的场序列，如3：2下拉，2：2下拉，更一般的m：n：l：k下拉序列。

公开(公告)号：US07286185B2

公开(公告)日：2007-10-23

申请号：US10661181

申请日：2003-09-11

申请人： Daniel W. Wong ,  Philip L. Swan ,  Daniel Doswald

发明人： Daniel W. Wong ,  Philip L. Swan ,  Daniel Doswald

IPC分类号： H04N7/01

CPC分类号： H04N7/012 ,  H04N5/144 ,  H04N7/0137 ,  H04N7/014

摘要： A de-interlacer includes recursive motion history map generating circuitry operative to determine a motion value associated with one or more pixels in interlaced fields based on pixel intensity information from at least two neighboring same polarity fields. The recursive motion history map generating circuitry generates a motion history map containing recursively generated motion history values for use in de-interlacing interlaced fields wherein the recursively generated motion history values are based, at least in part, on a decay function.

摘要翻译： 解交织器包括递归运动历史图生成电路，用于基于来自至少两个相邻的相邻极性场的像素强度信息来确定与隔行场中的一个或多个像素相关联的运动值。 递归运动历史图生成电路产生运动历史图，该运动历史图包含递归生成的运动历史值，用于去隔行隔行扫描场，其中递归生成的运动历史值至少部分地基于衰减函数。

公开(公告)号：US07953293B2

公开(公告)日：2011-05-31

申请号：US11381234

申请日：2006-05-02

申请人： Daniel Doswald

发明人： Daniel Doswald

IPC分类号： G06K9/36

CPC分类号： H04N17/00 ,  H04N7/0115 ,  H04N7/012

摘要： A field sequence detector determines the field sequence of a series of fields of video by assessing the vertical frequency content of hypothetical de-interlaced images. Hypothetical images are formed from a currently processed field and an adjacent (e.g. previous or next) field. If the vertical frequency content is relatively high (e.g. above ½ the Nyquist frequency for the image), the hypothetical image is assessed to be formed of improperly interlaced fields, belonging to different frames. If the frequency content is relatively low, the hypothetical image is assessed to be properly assembled from fields of the same frame. The field sequence in the series of fields may be detected from the assessed frequency content for several of said series of fields. Known field sequence, such as 3:2 pull-down, 2:2 pull down, and more generally m:n:l:k pull-down sequences.

摘要翻译： 场序列检测器通过评估假设的去隔行扫描图像的垂直频率内容来确定一系列视频场的场序列。 假设图像由当前处理的场和相邻（例如前一个或下一个）场形成。 如果垂直频率含量相对较高（例如，高于图像的奈奎斯特频率的1/2），则假设图像被评估为由属于不同帧的不适当隔行场组成。 如果频率含量相对较低，则假设图像被评估为从相同帧的场适当组合。 可以从所述系列场中的几个的评估频率内容中检测一系列场中的场序列。 已知的场序列，如3：2下拉，2：2下拉，更一般的m：n：l：k下拉序列。

公开(公告)号：US20090208123A1

公开(公告)日：2009-08-20

申请号：US12032796

申请日：2008-02-18

申请人： Daniel Doswald

发明人： Daniel Doswald

IPC分类号： G06K9/36

CPC分类号： H04N19/86 ,  H04N19/132 ,  H04N19/553 ,  H04N19/587

摘要： A device and method for interpolation during frame rate conversion are disclosed. The method includes, receiving original frames Fn and Fn+1 to interpolate a new frame Fp between the original frames. The method involves forming candidate motion vectors describing possible motion trajectories for groups of pixels between Fn and Fn+1 respectively, and selecting actual motion vectors from the candidate vectors. Each motion vector is selected with respect to a group of pixel locations in the new frame Fp to be interpolated. The device includes a motion estimator, an interpolator and a correction engine. Motion vectors are computed by the estimator, while the new frame is interpolated by the interpolator using motion compensated interpolation. The motion vectors are further used to identify regions of halo artifacts in the interpolated frame and filtering is applied by the correction engine to reduce the halo artifacts.

摘要翻译： 公开了一种用于帧速转换时的插值的装置和方法。 该方法包括：接收原始帧Fn和Fn + 1以在原始帧之间内插新帧Fp。 该方法包括分别形成描述Fn和Fn + 1之间的像素组的可能运动轨迹的候选运动矢量，以及从候选矢量中选择实际的运动矢量。 相对于待内插的新帧Fp中的一组像素位置来选择每个运动矢量。 该装置包括运动估计器，内插器和校正引擎。 运动矢量由估计器计算，而新帧由内插器使用运动补偿插值内插。 运动矢量进一步用于识别内插帧中的晕圈伪影的区域，并且由校正引擎施加滤波以减少光晕伪影。

公开(公告)号：US08542747B2

公开(公告)日：2013-09-24

申请号：US11616192

申请日：2006-12-26

申请人： Daniel Doswald

发明人： Daniel Doswald

IPC分类号： H04N7/50

CPC分类号： H04N7/0135 ,  H04N7/0115 ,  H04N7/0127 ,  H04N7/0147

摘要： A frame rate converter sequentially buffers video frames in a sequence of video frames in a buffer and interpolates at least two of the plurality of video frames in the buffer based on at least one interpolation parameter, to form interpolated output frames. Conveniently, the interpolation parameter is adjusted with each newly buffered frame in dependence on the current value of the cadence of the frame sequence. In this way, delays associated with cadence detection may be reduced.

摘要翻译： 帧速率转换器顺序地缓冲在缓冲器中的视频帧序列中的视频帧，并且基于至少一个内插参数内插缓冲器中的多个视频帧中的至少两个，以形成内插的输出帧。 方便地，根据帧序列的节奏的当前值，每个新缓存的帧调整插值参数。 以这种方式，可以减少与节奏检测有关的延迟。