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1. 发明授权

US6122321A Methods and apparatus for reducing the complexity of inverse quantization operations 失效
标题翻译：用于降低逆量化操作的复杂度的方法和装置
公开(公告)号：US6122321A
公开(公告)日：2000-09-19
申请号：US76448
申请日：1998-05-12
申请人： Sharif M. Sazzad , Larry Pearlstein
发明人： Sharif M. Sazzad , Larry Pearlstein
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50 , H04N7/12
CPC分类号： H04N19/423 , H04N19/124 , H04N19/17 , H04N19/186 , H04N19/45 , H04N19/60 , H04N19/61 , H04N19/70
摘要： Methods and apparatus for implementing video decoders at a lower cost than known video decoders are described. The methods include data reduction techniques, simplified inverse quantization techniques, and dynamically varying prediction filter complexity as a function of whether luminance or chrominance data is being processed. In various embodiments, data representing portions of B frames which will not be displayed is identified and discarded, e.g., without performing a decoding operation thereon. Portions of I and P frames which will not be displayed are identified and decoded at a reduced resolution and/or using simplified inverse quantization techniques. The decoded I and P frame data is stored for use when making subsequent predictions if required. Another data reduction technique involves applying different amounts of downsampling to different image portions with no or little downsampling being performed on image portions located at or nearest to the image's center of interest as determined from information included in a received encoded bitstream. Simplified inverse quantization techniques of the present invention which are suitable for use when processing data from P or B frames involve performing a simplified non-MPEG compliant inverse quantization operation. The inverse quantization operation of the present invention is implemented by treating an additive factor, k, as having a value of zero for both predictively and intra-coded data and/or by eliminating the mismatch control operation normally performed as part of an MPEG compliant inverse quantization operation.
摘要翻译：描述了以比已知的视频解码器更低的成本实现视频解码器的方法和装置。这些方法包括数据简化技术，简化逆量化技术以及动态变化的预测滤波器复杂度，作为是否处理亮度或色度数据的函数。在各种实施例中，表示不显示的B帧的部分的数据被识别和丢弃，例如不对其执行解码操作。以降低的分辨率和/或使用简化的逆量化技术来识别和解码不显示的I帧和P帧的部分。如果需要，进行后续预测时，解码的I和P帧数据被存储以供使用。另一种数据缩减技术涉及对不同图像部分应用不同量的下采样，在从包含在接收的编码比特流中的信息确定的位于或最靠近图像的感兴趣中心的图像部分上执行没有或很少的下采样。适用于处理来自P或B帧的数据的本发明的简化逆量化技术涉及执行简化的非MPEG兼容逆量化操作。本发明的逆量化操作是通过将预测和帧内编码数据中的加法因子k处理为零的值来实现的，和/或通过消除作为MPEG兼容逆的一部分正常执行的失配控制操作来实现量化操作。

2. 发明授权

US06385248B1 Methods and apparatus for processing luminance and chrominance image data 失效
标题翻译：用于处理亮度和色度图像数据的方法和装置
公开(公告)号：US06385248B1
公开(公告)日：2002-05-07
申请号：US09105224
申请日：1998-06-26
申请人： Larry Pearlstein , Sharif M. Sazzad
发明人： Larry Pearlstein , Sharif M. Sazzad
IPC分类号： H04N712
CPC分类号： H04N19/423 , H04N19/45 , H04N19/60 , H04N19/61 , H04N19/70
摘要： Methods and apparatus for implementing video decoders at a reduced cost are described. The methods include data reduction techniques, simplified inverse quantization techniques, and dynamically varying the complexity of image enhancement operations, e.g., prediction filtering operations, as a function of whether luminance or chrominance data is being processed. In order to reduce data storage requirements, luminance and chrominance data corresponding to previously encoded images may be stored at different resolutions with, in some embodiments, chrominance data being stored at less than half the resolution of luminance data. In various embodiments, data representing portions of B frames which will not be displayed is identified and discarded, e.g., without performing a decoding operation thereon. Portions of I and P frames which will not be displayed are identified and decoded at a reduced resolution and/or using simplified inverse quantization techniques. The decoded I and P frame data is stored for use when making subsequent predictions if required. Another data reduction technique involves applying different amounts of data reduction, e.g., downsampling, to different image portions with no or little downsampling being performed on image portions located at or nearest to the image's center of interest as determined from information included in a received encoded bitstream.
摘要翻译：描述了以降低的成本实现视频解码器的方法和装置。该方法包括数据简化技术，简化逆量化技术，以及动态地改变图像增强操作的复杂性，例如预测滤波操作，作为是否正在处理亮度或色度数据的函数。为了减少数据存储要求，与以前编码的图像相对应的亮度和色度数据可以以不同的分辨率存储，在一些实施例中，色度数据被存储在亮度数据的分辨率的一半以下。在各种实施例中，表示不显示的B帧的部分的数据被识别和丢弃，例如不对其执行解码操作。以降低的分辨率和/或使用简化的逆量化技术来识别和解码不显示的I帧和P帧的部分。如果需要，进行后续预测时，解码的I和P帧数据被存储以供使用。另一种数据缩减技术涉及对不同的图像部分应用不同数量的数据缩减，例如下采样，在从包含在接收的编码比特流中的信息确定的位于或最靠近图像的感兴趣中心的图像部分上执行没有或很少的下采样。

3. 发明授权

US06539058B1 Methods and apparatus for reducing drift due to averaging in reduced resolution video decoders 失效
标题翻译：降低分辨率视频解码器平均的减少漂移的方法和装置
公开(公告)号：US06539058B1
公开(公告)日：2003-03-25
申请号：US09059069
申请日：1998-04-13
申请人： Larry Pearlstein , Frank A. Lane , Sharif M. Sazzad
发明人： Larry Pearlstein , Frank A. Lane , Sharif M. Sazzad
IPC分类号： H04N712
CPC分类号： H04N19/184 , H04N19/51 , H04N19/59
摘要： Methods and apparatus for simulating, in reduced resolution video decoders, the biasing effect associated with MPEG's specified rounding of pixel values including a fractional component of 0.5 to the next highest integer value are described. In one embodiment, the biasing effect is simulated by generating luminance and chrominance DC DCT coefficient bias values from, e.g., motion vector offset data. The DC DCT bias values are then added to the DC DCT coefficients of the luminance and chrominance blocks, respectively, which correspond to the same image block to which the motion vector data used to generate the bias values corresponds. In another embodiment, pixel values are directly adjusted to simulate the biasing effect associated with MPEG compliant rounding. In such an embodiment, luminance and chrominance pixel biasing values are generated as a function of, e.g., motion vector offset information. The bias values are added to the pixel values generated through the use of motion compensated prediction. The pixel values are then rounded by performing a non-biased rounding operation to generate integer pixel values.
摘要翻译：描述了在缩小分辨率视频解码器中模拟与MPEG指定的四舍五入像素值相关联的偏置效果的方法和装置，包括0.5分数分数到下一最高整数值。在一个实施例中，通过从例如运动矢量偏移数据生成亮度和色度DC DCT系数偏置值来模拟偏置效果。 DC DCT偏置值然后分别相应于对应于用于产生偏置值的运动矢量数据对应的相同图像块的亮度和色度块的DC DCT系数。在另一个实施例中，直接调整像素值以模拟与MPEG兼容舍入相关联的偏移效果。在这样的实施例中，作为例如运动矢量偏移信息的函数产生亮度和色度像素偏置值。偏移值被添加到通过使用运动补偿预测生成的像素值。然后通过执行非偏置舍入操作来生成整数像素值来舍入像素值。

4. 发明授权

US6141456A Methods and apparatus for combining downsampling and inverse discrete cosine transform operations 失效
标题翻译：用于组合下采样和逆离散余弦变换操作的方法和装置
公开(公告)号：US6141456A
公开(公告)日：2000-10-31
申请号：US1700
申请日：1997-12-31
申请人： Larry Pearlstein , Sharif M. Sazzad
发明人： Larry Pearlstein , Sharif M. Sazzad
IPC分类号： H04N7/30 , G06T3/40 , G06T9/00 , H04N1/387 , H04N7/26 , H04N7/46 , H04N7/50 , G06K9/36 , G06K9/32 , G06K9/46
CPC分类号： G06T3/4084 , H04N19/126 , H04N19/48 , H04N19/59 , H04N19/61 , H04N19/90
摘要： Methods and apparatus for combining linear image post-processing operations with an inverse discrete cosine transform (IDCT) operation are described. In accordance with various embodiments of the present invention IDCT and downsampling operations are combined into a single operation to achieve the same image processing result as sequential IDCT and downsampling operations. By combining the two operations and performing downsampling in the DCT, as opposed to pixel domain, significant complexity reduction is achieved over embodiments where the two operations are performed sequentially. In one particular embodiment, when interlaced images are being processed, combined IDCT/downsampling circuits which perform field based, as opposed to frame based, downsampling in the DCT domain are employed. The method and apparatus of the present invention can be used to implement circuits which perform a combined full order IDCT/downsampling operation and/or a reduced complexity combined full order IDCT/downsampling operation. The combined IDCT/downsampling methods and apparatus of the present invention are capable of supporting a wide range of downsampling ratios using, at least in some cases, fewer math operators, than are required to implement zonal filtering followed by a reduced order IDCT operation which requires the use of a contiguous subblock of DCT coefficients.
摘要翻译：描述了将线性图像后处理操作与逆离散余弦变换（IDCT）操作组合的方法和装置。根据本发明的各种实施例，IDCT和下采样操作被组合成单个操作以实现与顺序IDCT和下采样操作相同的图像处理结果。通过组合这两个操作并在DCT中执行下采样，与像素域相反，实现了在顺序执行两个操作的实施例中显着的复杂度降低。在一个特定实施例中，当正在处理隔行扫描图像时，采用在DCT域中执行基于场的组合IDCT /下采样电路，而不是基于帧的下采样。本发明的方法和装置可用于实现执行组合的全序IDCT /下采样操作和/或降低复杂度的组合式全序列IDCT /下采样操作的电路。本发明的组合的IDCT /下采样方法和装置能够使用至少在一些情况下使用较少的数学运算符来支持大范围的下采样比率，而不是实现区域过滤，然后是减少订单IDCT操作所需的，这需要使用DCT系数的连续子块。

5. 发明授权

US6148032A Methods and apparatus for reducing the cost of video decoders 失效
标题翻译：降低视频解码器成本的方法和设备
公开(公告)号：US6148032A
公开(公告)日：2000-11-14
申请号：US105223
申请日：1998-06-26
申请人： Larry Pearlstein , Sharif M. Sazzad
发明人： Larry Pearlstein , Sharif M. Sazzad
IPC分类号： H04N7/32 , H04N7/26 , H04N7/30 , H04N7/50 , H04N7/12
CPC分类号： H04N19/00 , H04N19/17 , H04N19/186 , H04N19/423 , H04N19/45 , H04N19/60 , H04N19/61 , H04N19/30 , H04N19/70
摘要： Methods and apparatus for implementing video decoders at a reduced cost are described. The methods include data reduction techniques, simplified inverse quantization techniques, and dynamically varying the complexity of image enhancement operations, e.g., prediction filtering operations, as a function of whether luminance or chrominance data is being processed. In order to reduce data storage requirements, luminance and chrominance data corresponding to previously encoded images may be stored at different resolutions with, in some embodiments, chrominance data being stored at less than half the resolution of luminance data. In various embodiments, data representing portions of B frames which will not be displayed is identified and discarded, e.g., without performing a decoding operation thereon. Portions of I and P frames which will not be displayed are identified and decoded at a reduced resolution and/or using simplified inverse quantization techniques. The decoded I and P frame data is stored for use when making subsequent predictions if required. Another data reduction technique involves applying different amounts of data reduction, e.g., downsampling, to different image portions with no or little downsampling being performed on image portions located at or nearest to the image's center of interest as determined from information included in a received encoded bitstream.
摘要翻译：描述了以降低的成本实现视频解码器的方法和装置。该方法包括数据简化技术，简化逆量化技术，以及动态地改变图像增强操作的复杂性，例如预测滤波操作，作为是否正在处理亮度或色度数据的函数。为了减少数据存储要求，与以前编码的图像相对应的亮度和色度数据可以以不同的分辨率存储，在一些实施例中，色度数据被存储在亮度数据的分辨率的一半以下。在各种实施例中，表示不显示的B帧的部分的数据被识别和丢弃，例如不对其执行解码操作。以降低的分辨率和/或使用简化的逆量化技术来识别和解码不显示的I帧和P帧的部分。如果需要，进行后续预测时，解码的I和P帧数据被存储以供使用。另一种数据缩减技术涉及对不同的图像部分应用不同数量的数据缩减，例如下采样，在从包含在接收的编码比特流中的信息确定的位于或最靠近图像的感兴趣中心的图像部分上执行没有或很少的下采样。

6. 发明授权

US08760574B2 Image processing methods and systems for frame rate conversion 有权
标题翻译：用于帧速率转换的图像处理方法和系统
公开(公告)号：US08760574B2
公开(公告)日：2014-06-24
申请号：US12433686
申请日：2009-04-30
申请人： Larry Pearlstein , Samir Hulyalkar
发明人： Larry Pearlstein , Samir Hulyalkar
IPC分类号： H04N7/01
CPC分类号： G06T3/4007 , G09G5/006 , G09G2340/0435 , H04N7/0132 , H04N7/0135
摘要： An image processing method for frame rate conversion, comprising: receiving a stream of input pictures at an input frame rate, at least some of the input pictures being new pictures, the new pictures appearing within the stream of input pictures at an underlying new picture rate; generating interpolated pictures from certain ones of the input pictures; outputting a stream of output pictures at an output frame rate, the stream of output pictures including a blend of the new pictures and the interpolated pictures, the interpolated pictures appearing in the stream of output pictures at an average interpolated picture rate; and causing a variation in the average interpolated picture rate in response to detection of a variation in the underlying new picture rate.
摘要翻译：一种用于帧速率转换的图像处理方法，包括：以输入帧速率接收输入图像流，所述输入图像中的至少一些是新图像，所述新图像以基本新图像速率出现在所述输入图像流内 ; 从某些输入图像生成内插图像; 以输出帧速率输出输出图像流，输出图像流包括新图像和内插图像的混合，内插图像以平均内插图像速率出现在输出图像流中; 并且响应于底层新图像速率的变化的检测而导致平均内插图像速率的变化。

7. 发明授权

US07782938B2 Methods for reduced cost insertion of video subwindows into compressed video 失效
标题翻译：将视频子窗口成本插入压缩视频的方法
公开(公告)号：US07782938B2
公开(公告)日：2010-08-24
申请号：US10617605
申请日：2003-07-11
申请人： Larry Pearlstein
发明人： Larry Pearlstein
IPC分类号： H04B1/66
CPC分类号： H04N19/51 , H04N19/55 , H04N21/23892
摘要： Methods and apparatus for encoding image data to facilitate subsequent insertion of local image data. Also methods and apparatus for inserting image data, e.g., at local broadcast stations, without having to fully decode a received encoded bitstream. The encoding methods involve treating images to be encoded as a plurality of distinct, non-overlapping image regions or segments for encoding purposes. Image segments which are designated for use for local data insertion are not used as reference data for motion compensated prediction purposes when generating motion vectors to represent image areas, e.g., the area representing the main picture, which are outside the local data insertion segments. Because image segments which may be replaced are not used as reference data for image segments which will not be replaced, unintentional prediction errors which might otherwise result from replacing one or more image segments as part of a local data insertion operation are avoided.
摘要翻译：用于编码图像数据以便于随后插入局部图像数据的方法和装置。以及用于例如在本地广播站插入图像数据的方法和装置，而不必完全解码所接收的编码比特流。编码方法涉及将图像编码为用于编码目的的多个不同的，不重叠的图像区域或片段。指定用于本地数据插入的图像段在生成用于表示图像区域（例如，表示主图像的区域）的运动矢量时不用作用于运动补偿预测目的的参考数据，其在本地数据插入段之外。由于可以替换的图像段不被用作不被替换的图像段的参考数据，因此避免了由于将一个或多个图像段替换为本地数据插入操作的一部分而导致的意外预测误差。

8. 发明申请

US20090316041A1 METHOD AND APPARATUS FOR PROCESSING IMAGE DATA 失效
标题翻译：用于处理图像数据的方法和装置
公开(公告)号：US20090316041A1
公开(公告)日：2009-12-24
申请号：US12144018
申请日：2008-06-23
申请人： Larry Pearlstein , Richard K. Sita
发明人： Larry Pearlstein , Richard K. Sita
IPC分类号： H04N5/917
CPC分类号： H04N5/91 , H04N5/765 , H04N19/184
摘要： A method and apparatus of processing image data comprises receiving a video data signal where each pixel is represented by one or more digitized components, each digitized component being represented by a first set of binary digits and a second set of binary digits. The first set of binary digits is stored in a first memory plane and the second set of binary digits is stored in a second memory plane. The first set of binary digits is extracted and undergoes first and second processing. The second set of binary digits is extracted and undergoes second processing.
摘要翻译：处理图像数据的方法和装置包括：接收视频数据信号，其中每个像素由一个或多个数字化分量表示，每个数字化分量由第二组二进制数字和第二组二进制数字表示。第一组二进制数字存储在第一存储器平面中，第二组二进制数字被存储在第二存储器平面中。提取第一组二进制数字并进行第一和第二处理。提取第二组二进制数字并进行第二次处理。

9. 发明申请

US20090290789A1 METHOD AND APPARATUS FOR REDUCED COMPLEXITY VIDEO PROCESSING VIA SPECIAL CHROMA HANDLING 有权
标题翻译：通过特殊色彩处理降低复杂视频处理的方法和装置
公开(公告)号：US20090290789A1
公开(公告)日：2009-11-26
申请号：US12126321
申请日：2008-05-23
申请人： Kathleen Burns , Larry Pearlstein
发明人： Kathleen Burns , Larry Pearlstein
IPC分类号： G06K9/00
CPC分类号： H04N9/643 , G09G3/2003 , G09G5/02 , G09G5/028 , G09G5/04 , G09G5/363
摘要： A method and apparatus for reduced complexity video and image processing with special chroma handling are disclosed. Frame-type decisions are made on a video stream made up of a sequence of frames. A first subset of the frames are selected to be monochrome and generated without chroma data. A second subset of the frames are selected to be in color and generated with chroma components. In one embodiment, the first subset of frames includes odd frames and the second subset of frames includes even frames in the video stream. Under higher video frame rates, the lack of color in every other frame is not visible to the end viewer. Accordingly, subsequent processing of the output video stream permits luma-only processing of many frames in the video stream, extensively reducing the amount of computation.
摘要翻译：公开了一种用于降低复杂度的具有特殊色度处理的视频和图像处理的方法和装置。在由一系列帧组成的视频流上进行帧型决定。帧的第一子集被选择为单色并且没有色度数据生成。帧的第二子集被选择为彩色并由色度分量生成。在一个实施例中，帧的第一子集包括奇数帧，并且帧的第二子集包括视频流中的偶数帧。在更高的视频帧速率下，每个其他帧中缺少颜色对于终端观看者是不可见的。因此，输出视频流的后续处理允许视频流中许多帧的仅亮度处理，从而大大减少了计算量。

10. 发明授权

US07573938B2 Methods and apparatus for decoding and displaying different resolution video signals 失效
标题翻译：用于解码和显示不同分辨率视频信号的方法和装置
公开(公告)号：US07573938B2
公开(公告)日：2009-08-11
申请号：US11839367
申请日：2007-08-15
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry Pearlstein
IPC分类号： H04N7/24 , H04N5/445
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N5/78263 , H04N9/8042 , H04N9/8227 , H04N19/13 , H04N19/30 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/91 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621
摘要： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

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