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1.发明授权Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using spatial filtering 有权使用空间滤波的视频序列数据缩减和压缩视频序列比特率降低的预处理方法和系统公开(公告)号：US07809207B2
公开(公告)日：2010-10-05
申请号：US12185777
申请日：2008-08-04
CPC分类号： H04N19/117 , G06K9/00234 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/14 , H04N19/17 , H04N19/186 , H04N19/192 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. Also, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. Pre-processing may include spatial anisotropic diffusion filtering such as Perona-Malik filtering, Fallah-Ford filtering, or omni-directional filtering that extends Perona-Malik filtering to perform filtering in at least one diagonal direction. Pre-processing may also include performing filtering differently on a foreground region than on a background region of a video frame. This method includes identifying pixel locations having pixel values matching characteristics of human skin and determining a bounding shape for each contiguous grouping of matching pixel locations. The foreground region is comprised of pixel locations contained in a bounding shape and the background region is comprised of all other pixel locations.
摘要翻译： 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在经过预处理的视频序列的压缩之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 预处理可以包括空间各向异性扩散滤波，例如Perona-Malik滤波，Fallah-Ford滤波或全向滤波，其延伸Perona-Malik滤波以在至少一个对角线方向上执行滤波。 预处理还可以包括在前景区域上比在视频帧的背景区域上执行不同的滤波。 该方法包括识别具有与人皮肤特征相匹配的像素值的像素位置，并确定匹配像素位置的每个连续分组的边界形状。 前景区域由包含在边界形状中的像素位置组成，并且背景区域由所有其它像素位置组成。
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公开(公告)号：US20080284904A1
公开(公告)日：2008-11-20
申请号：US12107072
申请日：2008-04-21
IPC分类号： H04N11/02
CPC分类号： H04N19/117 , G06K9/00234 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/14 , H04N19/17 , H04N19/186 , H04N19/192 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. Also, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. Pre-processing may include spatial anisotropic diffusion filtering such as Perona-Malik filtering, Fallah-Ford filtering, or omni-directional filtering that extends Perona-Malik filtering to perform filtering in at least one diagonal direction. Pre-processing may also include performing filtering differently on a foreground region than on a background region of a video frame. This method includes identifying pixel locations having pixel values matching characteristics of human skin and determining a bounding shape for each contiguous grouping of matching pixel locations. The foreground region is comprised of pixel locations contained in a bounding shape and the background region is comprised of all other pixel locations.
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3.发明申请PRE-PROCESSING METHOD AND SYSTEM FOR DATA REDUCTION OF VIDEO SEQUENCES AND BIT RATE REDUCTION OF COMPRESSED VIDEO SEQUENCES USING SPATIAL FILTERING 有权使用空间滤波的压缩视频序列的视频序列数据减少和比特速率减少的预处理方法和系统公开(公告)号：US20080292201A1
公开(公告)日：2008-11-27
申请号：US12185777
申请日：2008-08-04
IPC分类号： G06K9/40
CPC分类号： H04N19/117 , G06K9/00234 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/14 , H04N19/17 , H04N19/186 , H04N19/192 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. Also, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. Pre-processing may include spatial anisotropic diffusion filtering such as Perona-Malik filtering, Fallah-Ford filtering, or omni-directional filtering that extends Perona-Malik filtering to perform filtering in at least one diagonal direction. Pre-processing may also include performing filtering differently on a foreground region than on a background region of a video frame. This method includes identifying pixel locations having pixel values matching characteristics of human skin and determining a bounding shape for each contiguous grouping of matching pixel locations. The foreground region is comprised of pixel locations contained in a bounding shape and the background region is comprised of all other pixel locations.
摘要翻译： 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在经过预处理的视频序列的压缩之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 预处理可以包括空间各向异性扩散滤波，例如Perona-Malik滤波，Fallah-Ford滤波或全向滤波，其延伸Perona-Malik滤波以在至少一个对角线方向上执行滤波。 预处理还可以包括在前景区域上比在视频帧的背景区域上执行不同的滤波。 该方法包括识别具有与人皮肤特征相匹配的像素值的像素位置，并确定匹配像素位置的每个连续分组的边界形状。 前景区域由包含在边界形状中的像素位置组成，并且背景区域由所有其它像素位置组成。
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4.发明申请PRE-PROCESSING METHOD FOR DATA REDUCTION OF VIDEO SEQUENCES AND BIT RATE REDUCTION OF COMPRESSED VIDEO SEQUENCES USING TEMPORAL FILTERING 有权用于数据减少的视频序列的预处理方法和使用时间滤波的压缩视频序列的比特速率减少公开(公告)号：US20080292006A1
公开(公告)日：2008-11-27
申请号：US12140254
申请日：2008-06-16
IPC分类号： H04N11/02
CPC分类号： H04N19/117 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/17 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. In addition, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. A temporal filtering method is provided for pre-processing of video frames of a video sequence. In the method, pixel values of successive frames are filtered when the difference in the pixel values between the successive frames are within high and low threshold values. The high and low threshold values are determined adaptively depending on the illumination level of a video frame to provide variability of filtering strength depending on the illumination levels of a video frame.
摘要翻译： 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在压缩预处理的视频序列之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 提供了用于对视频序列的视频帧进行预处理的时间滤波方法。 在该方法中，当连续帧之间的像素值的差在高和低阈值之间时，连续帧的像素值被滤波。 根据视频帧的照明级别自适应地确定高和低阈值，以根据视频帧的照明级别提供滤波强度的变化性。
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5.发明授权Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using temporal filtering 失效使用时间滤波的视频序列数据缩减和压缩视频序列比特率降低的预处理方法和系统公开(公告)号：US07403568B2
公开(公告)日：2008-07-22
申请号：US10640734
申请日：2003-08-13
CPC分类号： H04N19/117 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/17 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. In addition, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. A temporal filtering method is provided for pre-processing of video frames of a video sequence. In the method, pixel values of successive frames are filtered when the difference in the pixel values between the successive frames are within high and low threshold values. The high and low threshold values are determined adaptively depending on the illumination level of a video frame to provide variability of filtering strength depending on the illumination levels of a video frame.
摘要翻译： 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在压缩预处理的视频序列之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 提供了用于对视频序列的视频帧进行预处理的时间滤波方法。 在该方法中，当连续帧之间的像素值的差在高和低阈值之间时，连续帧的像素值被滤波。 根据视频帧的照明级别自适应地确定高和低阈值，以根据视频帧的照明级别提供滤波强度的变化性。
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6.发明授权Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using spatial filtering 有权使用空间滤波的视频序列数据缩减和压缩视频序列比特率降低的预处理方法和系统公开(公告)号：US08615042B2
公开(公告)日：2013-12-24
申请号：US12107072
申请日：2008-04-21
IPC分类号： H04N11/02
CPC分类号： H04N19/117 , G06K9/00234 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/14 , H04N19/17 , H04N19/186 , H04N19/192 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. Also, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. Pre-processing may include spatial anisotropic diffusion filtering such as Perona-Malik filtering, Fallah-Ford filtering, or omni-directional filtering that extends Perona-Malik filtering to perform filtering in at least one diagonal direction. Pre-processing may also include performing filtering differently on a foreground region than on a background region of a video frame. This method includes identifying pixel locations having pixel values matching characteristics of human skin and determining a bounding shape for each contiguous grouping of matching pixel locations. The foreground region is comprised of pixel locations contained in a bounding shape and the background region is comprised of all other pixel locations.
摘要翻译： 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在经过预处理的视频序列的压缩之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 预处理可以包括空间各向异性扩散滤波，例如Perona-Malik滤波，Fallah-Ford滤波或全向滤波，其延伸Perona-Malik滤波以在至少一个对角线方向上执行滤波。 预处理还可以包括在前景区域上比在视频帧的背景区域上执行不同的滤波。 该方法包括识别具有与人皮肤特征相匹配的像素值的像素位置，并确定匹配像素位置的每个连续分组的边界形状。 前景区域由包含在边界形状中的像素位置组成，并且背景区域由所有其它像素位置组成。
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7.发明授权Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using spatial filtering 有权使用空间滤波的视频序列数据缩减和压缩视频序列比特率降低的预处理方法和系统公开(公告)号：US07430335B2
公开(公告)日：2008-09-30
申请号：US10640944
申请日：2003-08-13
CPC分类号： H04N19/117 , G06K9/00234 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/14 , H04N19/17 , H04N19/186 , H04N19/192 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. Also, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. Pre-processing may include spatial anisotropic diffusion filtering such as Perona-Malik filtering, Fallah-Ford filtering, or omni-directional filtering that extends Perona-Malik filtering to perform filtering in at least one diagonal direction. Pre-processing may also include performing filtering differently on a foreground region than on a background region of a video frame. This method includes identifying pixel locations having pixel values matching characteristics of human skin and determining a bounding shape for each contiguous grouping of matching pixel locations. The foreground region is comprised of pixel locations contained in a bounding shape and the background region is comprised of all other pixel locations.
摘要翻译： 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在经过预处理的视频序列的压缩之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 预处理可以包括空间各向异性扩散滤波，例如Perona-Malik滤波，Fallah-Ford滤波或全向滤波，其延伸Perona-Malik滤波以在至少一个对角线方向上执行滤波。 预处理还可以包括在前景区域上比在视频帧的背景区域上执行不同的滤波。 该方法包括识别具有与人皮肤特征相匹配的像素值的像素位置，并确定匹配像素位置的每个连续分组的边界形状。 前景区域由包含在边界形状中的像素位置组成，并且背景区域由所有其它像素位置组成。
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8.发明授权Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using temporal filtering 有权使用时间滤波的视频序列数据缩减和压缩视频序列比特率降低的预处理方法和系统公开(公告)号：US08208565B2
公开(公告)日：2012-06-26
申请号：US12140254
申请日：2008-06-16
IPC分类号： H04N7/12
CPC分类号： H04N19/117 , H04N5/21 , H04N9/8042 , H04N19/136 , H04N19/17 , H04N19/80
摘要： Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. In addition, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. A temporal filtering method is provided for pre-processing of video frames of a video sequence. In the method, pixel values of successive frames are filtered when the difference in the pixel values between the successive frames are within high and low threshold values. The high and low threshold values are determined adaptively depending on the illumination level of a video frame to provide variability of filtering strength depending on the illumination levels of a video frame.
摘要翻译： 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在压缩预处理的视频序列之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 提供了用于对视频序列的视频帧进行预处理的时间滤波方法。 在该方法中，当连续帧之间的像素值的差在高和低阈值之间时，连续帧的像素值被滤波。 根据视频帧的照明级别自适应地确定高和低阈值，以根据视频帧的照明级别提供滤波强度的变化性。
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公开(公告)号：US20150117541A1
公开(公告)日：2015-04-30
申请号：US14530519
申请日：2014-10-31
IPC分类号： H04N19/52 , H04N19/587
CPC分类号： H04N19/52 , H04N7/50 , H04N19/107 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/146 , H04N19/15 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/46 , H04N19/463 , H04N19/48 , H04N19/51 , H04N19/513 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/625
摘要： A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.
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公开(公告)号：US08942287B2
公开(公告)日：2015-01-27
申请号：US13161478
申请日：2011-06-15
IPC分类号： H04N7/12 , G06K9/36 , H04N19/463 , H04N19/196 , H04N19/51 , H04N19/583 , H04N19/107 , H04N19/176 , H04N19/159 , H04N19/61 , H04N19/124 , H04N19/40 , H04N19/577 , H04N19/46 , H04N19/48 , H04N19/152 , H04N19/15
CPC分类号： H04N19/52 , H04N7/50 , H04N19/107 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/146 , H04N19/15 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/46 , H04N19/463 , H04N19/48 , H04N19/51 , H04N19/513 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/625
摘要： A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.
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