公开(公告)号：US5602654A

公开(公告)日：1997-02-11

申请号：US369847

申请日：1995-01-06

申请人： Andrew J. Patti ,  Jonathan K. Riek ,  M. Ibrahim Sezan

发明人： Andrew J. Patti ,  Jonathan K. Riek ,  M. Ibrahim Sezan

IPC分类号： H04N5/44 ,  H04N1/40 ,  G06K9/40 ,  H04N7/01

CPC分类号： H04N7/012

摘要： The present invention is a two-step, contour-sensitive deinterlacing technique. The first step of the technique determines for each missing pixel of an interlaced frame of image pixels whether the absolute difference between the pixels above and below the missing pixel is greater than a preselected threshold value. If it is decided that the missing pixel lies at a low-vertical frequency location, its value is estimated via vertical interpolation. Otherwise, the second step is carried out. The goal of the second step is to determine whether or not there is a well-defined contour passing through the missing pixel, and to determine its direction if there is one. In the presence of a well-defined contour, the missing pixel is obtained by averaging the intensity values along the direction of the contour in the field lines immediately above and below the missing field line. Otherwise the process effectively falls back to vertical interpolation. The presence of a well-defined contour is detected by comparing the summed absolute differences (SAD) of blocks of pixels along a predetermined set of candidate directions, including the vertical direction, and selecting the direction associated with the least SAD. The fall-back to vertical interpolation in the absence of a well-defined contour is implicit due to the weighting of the SAD corresponding to the vertical direction.

摘要翻译： 本发明是两步轮廓敏感的去隔行技术。 该技术的第一步确定图像像素的隔行帧的每个丢失像素，无论丢失像素之上和之下的像素之间的绝对差是否大于预先选择的阈值。 如果确定丢失的像素位于低垂直频率位置，则通过垂直插值估计其值。 否则，执行第二步。 第二步的目标是确定是否存在通过缺失像素的明确定义的轮廓，并确定其方向是否存在。 在存在明确定义的轮廓的情况下，通过在紧邻失踪场线上方和下方的场线中对沿着轮廓方向的强度值进行平均来获得缺失像素。 否则，该过程有效地回到垂直内插。 通过比较沿着包括垂直方向的预定候选方向集合的像素块的总和绝对差（SAD）以及选择与最小SAD相关联的方向来检测明确定义的轮廓的存在。 由于对应于垂直方向的SAD的加权，在没有明确定义的轮廓的情况下，回退到垂直内插是隐含的。

公开(公告)号：US5521644A

公开(公告)日：1996-05-28

申请号：US268363

申请日：1994-06-30

申请人： M. Ibrahim Sezan ,  Andrew J. Patti

发明人： M. Ibrahim Sezan ,  Andrew J. Patti

IPC分类号： H04N11/22 ,  H04N5/44 ,  H04N7/01

CPC分类号： H04N7/012

摘要： A hybrid deinterlace mechanism employs motion detection as a precursor to select the value for each missing pixel of a deinterlaced frame, which is generated by using four consecutive fields to produce a motion detection map that is subsequently coupled to a deinterlacer, together with a selected two of the four consecutive fields. These two selected fields and the motion map are sufficient for the deinterlacer to completely characterize the resulting deinterlaced frame. The deinterlacer switches between vertical interpolation and merging based upon motion. Motion is detected by applying a logic OR operation to respective even and odd field binary motion detection signals. In the absence of motion, the pixel values of an odd field and its immediately succeeding even field are merged. On the other hand, if motion is detected, vertical interpolation is carried out for the even field, by a linear combination of immediately adjacent pixels, respectively above and below the pixel of interest.

摘要翻译： 混合去隔行机构采用运动检测作为前兆，为去隔行帧的每个丢失像素选择值，其通过使用四个连续的场来产生运动检测图，随后与选择的两个 的四个连续的领域。 这两个所选择的场和运动图足以使去隔行扫描器完全表征所得到的去隔行帧。 去隔行扫描器基于运动在垂直内插和合并之间切换。 通过对相应的偶场和奇数二进制运动检测信号应用逻辑“或”运算来检测运动。 在不存在运动的情况下，合并奇数场及其紧随其后的偶数场的像素值。 另一方面，如果检测到运动，则通过分别在感兴趣像素的上方和下方的直接相邻像素的线性组合对偶数场执行垂直内插。

公开(公告)号：US5682205A

公开(公告)日：1997-10-28

申请号：US709525

申请日：1996-09-06

申请人： M. Ibrahim Sezan ,  Andrew J. Patti

发明人： M. Ibrahim Sezan ,  Andrew J. Patti

IPC分类号： H04N11/04 ,  H04N5/44 ,  H04N7/32 ,  H04N7/01 ,  H04N5/228

CPC分类号： H04N7/012

摘要： A process and apparatus for generating a deinterlaced digital output image from a plurality of sequential interlaced image fields processes selected ones (a pair of immediately successive fields of the same polarity) of the plurality of sequential interlaced image fields, so as to produce a global motion vector estimate of global translational motion between the selected image fields. An accuracy map representative of accuracy of motion compensation is then generated in accordance with the global motion vector estimate. An adaptive deinterlacer selectively deinterlaces one of the image fields in accordance with the accuracy map. The selectively deinterlaced image field is subjected to postprocessing in order to remove judder artifacts that may be present in the deinterlaced image field as a result of a misclassification of the global motion vector estimate as being accurate in one or more image regions of the deinterlaced image field.

摘要翻译： 用于从多个顺序隔行图像场产生去隔行数字输出图像的处理和装置处理多个顺序隔行扫描图像场中所选择的一个（相同极性的一对直接连续的场），以产生全局运动 所选图像场之间的全局平移运动的向量估计。 然后根据全局运动矢量估计产生代表运动补偿精度的精度图。 自适应去隔行扫描器根据准确度图选择性地去交织一个图像场。 选择性去隔行扫描的图像场被进行后处理，以便去除可能存在于去隔行扫描图像场中的抖动伪影，这是由于全局运动矢量估计的错误分类在去隔行图像场的一个或多个图像区域中精确的结果 。

公开(公告)号：US5696848A

公开(公告)日：1997-12-09

申请号：US588004

申请日：1996-01-17

申请人： Andrew J. Patti ,  M. Ibrahim Sezan ,  P. Erhan Eren

发明人： Andrew J. Patti ,  M. Ibrahim Sezan ,  P. Erhan Eren

IPC分类号： H04N1/387 ,  G06T1/00 ,  G06T3/40 ,  G06T5/50 ,  G06T13/00 ,  H04N5/14 ,  H04N7/01 ,  H04N7/26 ,  G06K9/40

CPC分类号： G06T3/4053 ,  G06T5/003 ,  H04N19/23 ,  H04N5/14 ,  H04N7/0125 ,  H04N7/014

摘要： A robust system, adaptive to motion estimation accuracy, for creating a high resolution image from a sequence of lower resolution motion images produces a mapping transformation for each low resolution image to map pixels in each low resolution image into locations in the high resolution image. A combined point spread function (PSF) is computed for each pixel in each lower resolution image employing the mapping transformations provided that they describe accurate motion vectors. The high resolution image is generated from the lower resolution images employing the combined PSF's by projection onto convex sets (POCS), where sets and associated projections are defined only for those pixels whose motion vector estimates are accurate.

摘要翻译： 用于从较低分辨率运动图像序列创建高分辨率图像的适用于运动估计精度的鲁棒系统产生用于每个低分辨率图像的映射变换，以将每个低分辨率图像中的像素映射到高分辨率图像中的位置。 对于使用映射变换的每个较低分辨率图像中的每个像素计算组合点扩散函数（PSF），只要它们描述精确的运动矢量。 高分辨率图像是通过投影到凸集（POCS）上的采用组合PSF的较低分辨率图像产生的，其中集合和相关联的投影仅针对运动矢量估计准确的那些像素定义。

公开(公告)号：US5579054A

公开(公告)日：1996-11-26

申请号：US426309

申请日：1995-04-21

申请人： M. Ibrahim Sezan ,  Andrew J. Patti

发明人： M. Ibrahim Sezan ,  Andrew J. Patti

IPC分类号： H04N5/91 ,  H04N5/44 ,  H04N7/01

CPC分类号： H04N5/4448

摘要： A system and method for creating a high quality still image from a series of interlaced video fields of the type employing local motion detection between first and third fields of the series, merging the first and second fields in areas of no motion and performing spatial interpolation on the first field in areas containing local motion, including removing dominant motion from the second and third fields prior to local motion detection.

摘要翻译： 一种系统和方法，用于从采用该系列的第一和第三场之间的局部运动检测的一系列隔行扫描视频场创建高质量静止图像，在不运动的区域中合并第一和第二场并执行空间插值 包括局部运动的区域中的第一场，包括在局部运动检测之前从第二和第三场去除主要运动。

公开(公告)号：US5473383A

公开(公告)日：1995-12-05

申请号：US259830

申请日：1994-06-15

申请人： M. Ibrahim Sezan ,  Andrew J. Patti

发明人： M. Ibrahim Sezan ,  Andrew J. Patti

IPC分类号： H04N11/04 ,  H04N1/17 ,  H04N5/44 ,  H04N7/01

CPC分类号： H04N7/012

摘要： A hybrid deinterlace mechanism employs motion detection as a precursor to select the value for each missing pixel of a deinterlaced frame. If the missing pixel is found to belong to a steady or non-motion portion of the image, then its value is replaced by the corresponding value in the adjacent field (i.e., merging is performed). Otherwise, (where image motion is present) spatial interpolation, preferably edge-adaptive interpolation, is employed to determine the value of the missing pixel.

摘要翻译： 混合去隔行机构采用运动检测作为前导，为去隔行帧的每个丢失像素选择值。 如果发现丢失的像素属于图像的稳定或非运动部分，则其值被相邻场中的对应值替代（即，执行合并）。 否则，（其中存在图像运动的情况）空间插值，优选边缘自适应内插，以确定丢失像素的值。

公开(公告)号：US09264939B2

公开(公告)日：2016-02-16

申请号：US14345268

申请日：2011-10-07

申请人： Andrew J. Patti ,  Wai-Tian Tan

发明人： Andrew J. Patti ,  Wai-Tian Tan

IPC分类号： H04W28/06 ,  H04L1/18

CPC分类号： H04W28/06 ,  H04L1/1867

摘要： Data transmission over a wireless connection is improved by determining whether packets include a packet containing an end of a data frame, and if the packets are determined to include such a packet, transmitting the packets together over the wireless connection.

摘要翻译： 通过确定分组是否包括包含数据帧的结束的分组，并且如果分组被确定为包括这样的分组，则通过无线连接将分组发送到一起，来改进无线连接上的数据传输。

公开(公告)号：US20130039410A1

公开(公告)日：2013-02-14

申请号：US13205389

申请日：2011-08-08

申请人： Wai-Tian Tan ,  Andrew J. Patti ,  Mitchell Trott

发明人： Wai-Tian Tan ,  Andrew J. Patti ,  Mitchell Trott

IPC分类号： H04N7/64 ,  H04N7/26 ,  H04B1/66

CPC分类号： H03M13/373 ,  H03M13/05 ,  H03M13/35 ,  H04N19/159 ,  H04N19/172 ,  H04N19/66 ,  H04N19/895

摘要： Methods for adapting the sliding window of sliding window-based error correcting codes based on the coding structure of a compressed media stream are disclosed. In one aspect, a sender packetizes each frame of a media stream to be sent to a receiver into a set of frame packets. The sender also determines compression dependence of each frame and adapts a sliding window of a sliding window-based error correcting code based on the compression dependence of the frame. The sender encodes the frame packets into at least one associated parity packet according to the error correcting code with the adapted sliding window, and sends the frame packets and the at least one associated parity packet to the receiver.

摘要翻译： 公开了基于压缩媒体流的编码结构来适应基于滑动窗口的纠错码的滑动窗口的方法。 在一个方面，发送方将要发送到接收机的媒体流的每个帧打包成一组帧分组。 发送者还确定每个帧的压缩依赖性，并且基于帧的压缩依赖性来适配基于滑动窗口的纠错码的滑动窗口。 发送者根据具有适应的滑动窗口的纠错码将帧分组编码成至少一个相关联的奇偶校验分组，并将帧分组和至少一个相关联的奇偶校验分组发送到接收机。

公开(公告)号：US08634300B2

公开(公告)日：2014-01-21

申请号：US13386633

申请日：2009-08-31

申请人： Wai-Tian Tan ,  Andrew J. Patti

发明人： Wai-Tian Tan ,  Andrew J. Patti

IPC分类号： H04N7/24 ,  H04N17/00

CPC分类号： H04N21/23805 ,  H04L65/1083 ,  H04L65/608 ,  H04L65/80 ,  H04N21/6437 ,  H04N21/64723 ,  H04N21/64761

摘要： According to one embodiment, video data from a video transmitter (110) is received (420) at a network buffer (130). Information that pertains to a network buffer drain rate (14) of the network buffer (1q3) is monitored (430). The network buffer drain rate (140) is a rate that the video data is removed from the network buffer (130). The network buffer drain rate (140) is estimated (440) based on the monitored information. A transmission rate (120) that the video transmitter (110) transmits future video data is adjusted (450) to not exceed an allowed transmission rate (ATR) that is calculated based on the estimation of the network buffer drain rate (140).

摘要翻译： 根据一个实施例，来自视频发射器（110）的视频数据在网络缓冲器（130）处被接收（420）。 监视与网络缓冲器（1q3）的网络缓冲器排出速率（14）有关的信息（430）。 网络缓冲器排出速率（140）是从网络缓冲器（130）移除视频数据的速率。 基于监视的信息估计（440）网络缓冲器排出速率（140）。 将视频发送器（110）发送未来视频数据的传输速率（120）（450）调整为不超过基于网络缓冲器排出速率（140）的估计而计算的允许传输速率（ATR）。

公开(公告)号：US08411743B2

公开(公告)日：2013-04-02

申请号：US12771554

申请日：2010-04-30

申请人： Debargha Mukherjee ,  Wai-Tian Tan ,  Andrew J. Patti

发明人： Debargha Mukherjee ,  Wai-Tian Tan ,  Andrew J. Patti

IPC分类号： H04N7/12

CPC分类号： H04N19/395 ,  H04N19/12 ,  H04N19/132 ,  H04N19/14 ,  H04N19/164 ,  H04N19/187 ,  H04N19/61

摘要： A computer-implemented method for encoding using feedback. A base layer of a current frame is encoded. The residue of the current frame is generated. The residue of the current frame is encoded. Also, in response to feedback from a receiver, a coding strategy for each block of the current frame is determined and coding is performed according to one or more of source coding and Wyner-Ziv coding. The feedback is based on the base layer of the current frame and previous correctly received enhancement frames.

摘要翻译： 一种用计算机实现的使用反馈进行编码的方法。 编码当前帧的基本层。 生成当前帧的残差。 当前帧的残差被编码。 此外，响应于来自接收机的反馈，确定当前帧的每个块的编码策略，并且根据源编码和Wyner-Ziv编码中的一个或多个来执行编码。 反馈基于当前帧的基本层和先前正确接收到的增强帧。