公开(公告)号：US5412435A

公开(公告)日：1995-05-02

申请号：US84708

申请日：1993-06-25

申请人： Yasuyuki Nakajima

发明人： Yasuyuki Nakajima

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/133 ,  H04N7/137

CPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/112 ,  H04N19/51

摘要： A coder with a motion estimation system, which comprises a same parity field motion estimator, a near field motion estimator, an inter-field interpolated motion estimator, a comparator for selecting the smallest one of prediction errors E1 to E3 output from the respective motion estimators, and a selector for selectively outputting a motion vector from the motion estimator providing the smallest prediction error.

摘要翻译： 具有运动估计系统的编码器，其包括相同的奇偶校验场运动估计器，近场运动估计器，场间内插运动估计器，用于选择从各个运动估计器输出的最小预测误差E1至E3的比较器 以及选择器，用于从提供最小预测误差的运动估计器选择性地输出运动矢量。

公开(公告)号：US5408274A

公开(公告)日：1995-04-18

申请号：US29435

申请日：1993-03-11

申请人： Shih-Fu Chang ,  David Messerschmitt ,  Wen-Lung Chen

发明人： Shih-Fu Chang ,  David Messerschmitt ,  Wen-Lung Chen

IPC分类号： H04N5/262 ,  H04N7/26 ,  H04N7/50 ,  H04N21/2365 ,  H04N21/434 ,  H04N7/133 ,  H04N7/137

CPC分类号： H04N5/262 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61 ,  H04N19/90 ,  H04N21/2365 ,  H04N21/4347

摘要： Inverse motion compensating devices are used to transform motion compensated transform domain video signals to corresponding transform domain video signals. A compositing mechanism receives the transform domain video signals from the inverse motion compensating devices and performs transform domain video compositing operations directly on the transform domain video signals. The compositing operations result in a single composited signal incorporating each of the transform domain video signals. The single composited signal may be encoded for motion compensation to generate a single motion compensated transform domain video signal suitable for transmission. After transmission, inverse transform domain operations and inverse motion compensation operations may be performed to reconstruct the composited signal. The composited signal may then be projected on a video display device.

摘要翻译： 逆运动补偿装置用于将运动补偿的变换域视频信号转换成相应的变换域视频信号。 合成机构从逆运动补偿装置接收变换域视频信号，直接对变换域视频信号进行变换域视频合成操作。 合成操作导致结合每个变换域视频信号的单个合成信号。 单个合成信号可以被编码用于运动补偿以产生适合于传输的单个运动补偿变换域视频信号。 在传输之后，可以执行逆变换域操作和反向运动补偿操作以重建合成信号。 合成信号然后可以投影在视频显示设备上。

公开(公告)号：US5408269A

公开(公告)日：1995-04-18

申请号：US66723

申请日：1993-05-24

申请人： Ikuo Tsukagoshi

发明人： Ikuo Tsukagoshi

IPC分类号： H04N5/93 ,  G06T9/00 ,  H04N19/423 ,  H04N19/426 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/523 ,  H04N19/53 ,  H04N19/59 ,  H04N19/61 ,  H04N19/625 ,  H04N19/85 ,  H04N19/91 ,  H04N7/137 ,  H04N7/133

CPC分类号： G06T9/008 ,  H04N19/433 ,  H04N19/523 ,  H04N19/61

摘要： In a picture encoding apparatus, detection of a moving vector of half-pixel precision is executed by using a single clock without increasing the number of frame memories. Time-series input pixel data is transformed into parallel pixel data; the parallel pixel data obtained through the transformation is interpolated to thereby generate interpolating data on each pixel in an area specified by a moving vector of one-pixel precision. The interpolation data is output in parallel as pixel data on a plurality of interpolation block areas obtained by displacing by 1/2 pixel the block area specified by the moving vector at one-pixel unit, thereby making it possible to quickly obtain interpolation data solely on a region around the area specified by the moving vector at one-pixel unit. With this arrangement, interpolation can be executed with a substantially simplified construction as compared to the prior art, making it possible to easily detect a moving vector of half-pixel precision without increasing the number of frame memories of clock frequency.

摘要翻译： 在图像编码装置中，通过使用单个时钟来执行半像素精度的运动矢量的检测，而不增加帧存储器的数量。 时间序列输入像素数据被变换为并行像素数据; 通过变换获得的并行像素数据被内插，从而在由一像素精度的移动矢量指定的区域中的每个像素上生成内插数据。 插补数据作为像素数据并行地输出到通过以一个像素单位移动由移动矢量指定的块区域1/2像素而获得的多个插值块区域，从而可以快速获得插值数据 由运动矢量以一个像素单位指定的区域周围的区域。 利用这种布置，与现有技术相比，可以以基本上简化的结构执行插值，使得可以容易地检测半像素精度的运动矢量，而不增加时钟频率的帧存储器的数量。

公开(公告)号：US5398078A

公开(公告)日：1995-03-14

申请号：US969351

申请日：1992-10-30

申请人： Tadaaki Masuda ,  Yoshiharu Uetani ,  Toshinori Odaka ,  Tadahiro Oku ,  Tomoo Yamakage

发明人： Tadaaki Masuda ,  Yoshiharu Uetani ,  Toshinori Odaka ,  Tadahiro Oku ,  Tomoo Yamakage

IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N7/36 ,  H04N7/50 ,  H04N7/137

CPC分类号： H04N19/59 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/142 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/53 ,  H04N19/60 ,  H04N19/61 ,  H04N19/13 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/91

摘要： A method of detecting a motion vector in an image coding apparatus, including blocking an input image block to be coded into a plurality of input blocks each consisting of a plurality of pixels; sub-sampling a coded image signal to obtain a coded and sub-sampled image signal; sub-sampling the input image block at a predetermined pixel interval to obtain a sub-sampled input block; searching a primary block most correlated with the sub-sampled input block from the coded and sub-sampled image signal in a predetermined range, to output a primary motion vector which indicates the primary block most correlated with the sub-sampled input blocks; and controlling at least one of a central position of a searching area and a searching pel accuracy in accordance with a type of the primary motion vector, to search a secondary block most correlated with one of the input blocks from a coded image signal, to obtain a secondary motion vector.

摘要翻译： 一种检测图像编码装置中的运动矢量的方法，包括将要编码的输入图像块阻塞到由多个像素组成的多个输入块中; 对编码图像信号进行子采样以获得编码和次采样图像信号; 以预定的像素间隔对输入图像块进行子采样以获得子采样输入块; 在预定范围内从编码和次采样图像信号中搜索与子采样输入块最相关的主块，以输出指示与子采样输入块最相关的主块的主运动矢量; 以及根据主要运动矢量的类型来控制搜索区域的中心位置和搜索像素精度中的至少一个，从编码图像信号搜索与输入块中的一个最相关的次块，以获得 二次运动矢量。

公开(公告)号：US5398068A

公开(公告)日：1995-03-14

申请号：US114961

申请日：1993-09-02

申请人： Bede Liu ,  Andre Zaccarin

发明人： Bede Liu ,  Andre Zaccarin

IPC分类号： H04N7/26 ,  H04N7/50 ,  H04N7/137

CPC分类号： H04N19/61 ,  H04N19/51 ,  H04N19/56

摘要： In an image coding system, block based motion estimation is used to determine motion vectors for blocks of pixels in a current frame or field. Only a portion of blocks from a predetermined pattern of blocks in a current frame or field are searched for a match with a block of pixels in a previous frame or field over a designated search area. Motion vectors for the blocks of the current frame or field not selected for searching are obtained by interpolation from motion vectors obtained for associated searched neighboring blocks, respectively, or by using the zero motion vector, or by performing a search over a limited range around the position defined by each of the motion vectors from neighboring blocks.

摘要翻译： 在图像编码系统中，使用基于块的运动估计来确定当前帧或场中的像素块的运动矢量。 搜索来自当前帧或场中的预定模式块的块的一部分，以便与指定搜索区域上的先前帧或场中的像素块进行匹配。 通过针对相关联的搜索到的相邻块获得的运动矢量或通过使用零运动矢量进行插值，或者通过在周围的有限范围内执行搜索来获得用于未选择用于搜索的当前帧或场的块的运动矢量 由相邻块的每个运动矢量定义的位置。

公开(公告)号：US5394196A

公开(公告)日：1995-02-28

申请号：US946371

申请日：1992-11-19

申请人： Philippe Robert

发明人： Philippe Robert

IPC分类号： H04N7/26 ,  G06T7/20 ,  H04N5/14 ,  H04N7/46 ,  H04N7/137

CPC分类号： H04N5/145 ,  G06T7/20 ,  H04N19/577

摘要： The present invention relates to a method of classifying the pixels of an image belonging to a sequence of moving images, as well as to a method of temporal interpolation of images using this classification. The method of classifying the pixels of an image t(j+1) pertains to temporal projection of the field of motion of an image t(j) belonging to a sequence of moving images, with the pixels of the image t(j) being defined by a motion vector and by a tag belonging to a class such as "normal", "occluding" or "appearing". The method is characterized by the fact that, before projection, all pixels of t(j) are tagged "appearing", and then, during the temporal projection, the tagging is modified as a function of the tagging of the pixels of t(j) in such a way as to obtain a tagging according to the same above classes (i.e., normal, occluding, or appearing).

摘要翻译： PCT No.PCT / FR92 / 00278 Sec。 371日期：1992年11月19日 102（e）日期1992年11月19日PCT提交1992年3月27日PCT公布。 WO92 / 17983 PCT公开号 日期为1992年10月15日。本发明涉及对属于运动图像序列的图像的像素进行分类的方法以及使用该分类的图像的时间插值方法。 对图像t（j + 1）的像素进行分类的方法属于属于运动图像序列的图像t（j）的运动场的时间投影，图像t（j）的像素为 由运动矢量和属于诸如“正常”，“闭塞”或“出现”之类的标签定义。 该方法的特征在于，在投影之前，t（j）的所有像素被标记为“出现”，然后在时间投影期间，标签被修改为t（j）的像素的标记的函数 ）以获得根据上述类别（即，正常，闭塞或出现）相同的标签的方式。

公开(公告)号：US5365271A

公开(公告)日：1994-11-15

申请号：US988722

申请日：1992-12-10

申请人： Kenichi Asano

发明人： Kenichi Asano

IPC分类号： G06T9/00 ,  H04N7/14 ,  H04N19/126 ,  H04N19/136 ,  H04N19/159 ,  H04N19/196 ,  H04N19/60 ,  H04N19/625 ,  H04N19/86 ,  H04N7/133 ,  H04N7/137

CPC分类号： H04N19/82 ,  H04N19/107 ,  H04N19/126 ,  H04N19/14 ,  H04N19/152 ,  H04N19/176 ,  H04N19/18 ,  H04N19/48 ,  H04N19/61 ,  H04N19/124 ,  H04N19/132 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/60

摘要： An information source encoding system in which overload noise and block noise are less recognized and quantizing overload and large quantizing distortion can reduced within an intra-frame mode encoding region even when intra-frame and inter-frame mode encoding regions coexist in an image screen. An orthogonal converter outputs conversion coefficients in a predetermined spatial frequency region. A coefficient separating unit selectively separates the conversion coefficients. With the separated coefficient from the coefficient separating unit, a power is calculated. The calculated power is compared with a predetermined threshold value by a coefficient power determining unit. A step width controller sets a quantizing step width, based on the combination of a power determining ON/OFF signal the coefficient power determining unit and an adaptive control ON/OFF signal from the encoding controller, when the coefficient power is larger than the threshold value in the intra-frame mode, and sets a quantizing step width determined by the quantization characteristic designation signal from the encoding controller in remaining cases. As a result, a combined adaptive quantization characteristic signal having a quantizing step width for combined adaptive control is output to the quantizer.

摘要翻译： 即使在帧内和帧间模式编码区域共同存在于图像画面中的情况下，也可以在帧内模式编码区域内减少过载噪声和块噪声较少识别并量化过载和大量化失真的信息源编码系统。 正交变换器在预定的空间频率区域中输出转换系数。 系数分离单元选择性地分离转换系数。 利用系数分离单元的分离系数，计算功率。 将计算出的功率与系数功率确定单元与预定阈值进行比较。 步进宽度控制器基于系数功率确定单元的功率确定ON / OFF信号和来自编码控制器的自适应控制ON / OFF信号的组合，当系数功率大于阈值时，设置量化步长 在帧内模式中，并且在剩余的情况下设置由编码控制器的量化特性指定信号确定的量化步长。 结果，具有用于组合自适应控制的量化步长的组合自适应量化特征信号被输出到量化器。

公开(公告)号：US5351095A

公开(公告)日：1994-09-27

申请号：US678278

申请日：1991-04-29

申请人： Michel Kerdranvat

发明人： Michel Kerdranvat

IPC分类号： G06T7/20 ,  G06T9/00 ,  G06T9/40 ,  H03M7/30 ,  H04N7/26 ,  H04N7/32 ,  H04N7/137

CPC分类号： G06T7/2026 ,  G06T9/40 ,  H04N19/53 ,  H04N19/96

摘要： A method for estimating motion which calculates a priori for a current image a first field of motion for blocks of a first level resulting from a partition of the image into blocks of a so-called maximum size, on the basis of a symmetric estimation algorithm, using the preceding and following images in the sequence to calculate the displaced inter-raster differences. Then, a second field of motion for blocks resulting from the partition of a block of the first level are calculated, and so on until a level of blocks of a minimum size. The final field of motion results from the selection of the most suited motion vectors from those of the various levels and is directly associated with a quadtree coding tree. Such a method finds particular application to image transmission chains, and in particular high-definition.

摘要翻译： PCT No.PCT / FR90 / 00628 Sec。 371日期：1991年4月29日 102（e）1991年4月29日PCT PCT 1990年8月24日PCT公布。 公开号WO91 / 03797 1991年3月21日，1991年。一种用于估计运动的方法，该方法计算当前图像的先验，对于由图像划分成所谓的最大尺寸的块而产生的第一级的块的第一运动场， 对称估计算法的基础，使用序列中的前述和后续图像来计算偏移的光栅间差异。 然后，计算由第一级别的块的分区产生的块的第二运动场，并且依次类推，直到最小大小的块的级别为止。 最后的运动场是从各种级别的运动矢量的选择中产生的，并且与四叉树编码树直接相关。 这种方法特别适用于图像传输链，特别是高清晰度。

公开(公告)号：US5293229A

公开(公告)日：1994-03-08

申请号：US859145

申请日：1992-03-27

申请人： Siu L. Iu

发明人： Siu L. Iu

IPC分类号： H04N7/32 ,  G06T9/00 ,  H04N7/46 ,  H04N7/50 ,  H04N7/137

CPC分类号： H04N19/577 ,  H04N19/61

摘要： A video compression system which is based on the image data compression system developed by the Motion Picture Experts Group (MPEG) uses various group-of-fields configurations to reduce the number of binary bits used to represent an image composed of odd and even fields of video information, where each pair of odd and even fields defines a frame. According to a first method, each field in the group of fields is predicted using the closest field which has previously been predicted as an anchor field. According to a second method, intra fields (I-fields) and predictive fields (P-fields) are distributed in the sequence so that no two I-fields and/or no two P-fields are at adjacent locations in the sequence. According to a third method, the number of I-fields and P-fields in the encoded sequence is reduced by encoding one field in a given frame as a P-field or a B-field where the other field is encoded as an I-field and encoding one field in a further frame as a B-field where the other field is encoded as a P-field.

摘要翻译： 基于由运动图像专家组（MPEG）开发的图像数据压缩系统的视频压缩系统使用各种组域配置来减少用于表示由奇数和偶数场组成的图像的二进制比特数 视频信息，其中每对奇数和偶数场定义一帧。 根据第一种方法，使用先前已被预测为锚定场的最近的场来预测该组场中的每个场。 根据第二种方法，按照序列分配内场（I场）和预测场（P场），使得在序列中的相邻位置处不存在两个I场和/或没有两个P场。 根据第三种方法，通过将给定帧中的一个字段编码为P字段或B字段来减少编码序列中的I字段和P字段的数量，其中另一个字段被编码为I- 并将另一帧中的一个字段编码为B字段，其中另一个字段被编码为P字段。

公开(公告)号：US5276512A

公开(公告)日：1994-01-04

申请号：US831368

申请日：1992-02-04

申请人： Katsumasa Onda

发明人： Katsumasa Onda

IPC分类号： G06T7/20 ,  H04N5/14 ,  H04N5/21 ,  H04N7/137

CPC分类号： H04N19/80 ,  H04N5/144 ,  H04N5/21

摘要： A first motion detection is performed for determining a motion or a still condition by comparing a difference signal .DELTA. between an input video signal of a current frame and a video signal of a previous frame with a preset threshold value. A second motion detection is performed for determining a motion or a still condition by using a difference signal .DELTA. between an input video signal of a current frame and a video signal of a previous frame at surrounding pixels and a center pixel as a target for the second motion detection. A wrong decision correction is performed for correcting an error in a result of motion detection in the first and/or second motion detections by changing a determination of a motion condition to a still condition, or a determination of a still condition to a motion condition, wherein an error is either a wrong determination of a motion condition for a still condition or a wrong determination of a still condition for a motion condition. A transition period detection is performed for detecting a motion-to-still transition period for a pixel whose data is determined as still during the correcting of a wrong decision.

摘要翻译： 通过将当前帧的输入视频信号和前一帧的视频信号之间的差信号（Delta）与预设阈值进行比较来执行第一运动检测以确定运动或静止状态。 执行第二运动检测，以通过使用当前帧的输入视频信号和周围像素之前的帧的视频信号与中心像素之间的差信号（Delta）来确定运动或静止状态，作为目标 第二次运动检测。 执行错误的判定校正，以通过将运动条件的确定改变为静止状态或将静止状态的确定改变为运动条件来校正第一和/或第二运动检测中的运动检测结果中的错误， 其中错误是针对静止状态的运动条件的错误确定或运动条件的静止状态的错误确定。 执行过渡时段检测，用于检测在校正错误决定期间其数据被确定为静止的像素的运动到静止转换周期。