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81. 发明授权

US5978513A Picture encoding method and apparatus and picture decoding method and apparatus 失效
标题翻译：图像编码方法及装置及图像解码方法及装置
公开(公告)号：US5978513A
公开(公告)日：1999-11-02
申请号：US858056
申请日：1997-05-16
申请人： Jun Murayama
发明人： Jun Murayama
IPC分类号： H04N19/00 , G06T9/00 , G06T9/20 , H03M7/30 , H04N1/41 , H04N19/102 , H04N19/134 , H04N19/136 , H04N19/149 , H04N19/15 , H04N19/192 , H04N19/196 , H04N19/20 , H04N19/423 , H04N19/46 , H04N19/70 , G06K9/48
CPC分类号： G06T9/20
摘要： In a picture encoding and decoding method and apparatus, an object contour can be chain coded precisely even in the case where noise exists in the vicinity of object contour, and the object contour branched off can be coded with small quantity of codes. In the case where the branched part occurs in a feature point chain, by multiplexing branch code D1 to chain codes S23 and S22 and expressing as a tree structured feature point chain including the branch part of the object contour, an increase in number of chains can be controlled and the efficient chain coding can be conducted. Moreover, since the terminal branch chains having no branch point in the chain become the objects of thresholding, only noise elements can be effectively eliminated without cutting off the feature point chain showing the object contours.
摘要翻译：在图像编码和解码方法和装置中，即使在对象轮廓附近存在噪声的情况下，也能精确地对目标轮廓进行链式编码，并且可以用少量的代码来编码对象轮廓分支。在分支部分发生在特征点链中的情况下，通过将分支代码D1复用到链码S23和S22，并且表示为包括对象轮廓的分支部分的树结构特征点链，链的数量的增加并进行有效的链式编码。此外，由于在链条中没有分支点的端子分支链成为阈值化的对象，所以只有噪声元素才能被有效地消除，而不会中断显示对象轮廓的特征点链。

82. 发明授权

US5978030A Method and apparatus for encoding a video signal using feature point based motion estimation 失效
标题翻译：使用基于特征点的运动估计对视频信号进行编码的方法和装置
公开(公告)号：US5978030A
公开(公告)日：1999-11-02
申请号：US435688
申请日：1995-05-05
申请人： Hae-Mook Jung , Min-Sub Lee
发明人： Hae-Mook Jung , Min-Sub Lee
IPC分类号： H04N19/50 , G06T1/00 , G06T9/00 , H04N19/105 , H04N19/107 , H04N19/139 , H04N19/162 , H04N19/176 , H04N19/192 , H04N19/196 , H04N19/20 , H04N19/423 , H04N19/46 , H04N19/463 , H04N19/503 , H04N19/51 , H04N19/517 , H04N19/53 , H04N19/54 , H04N19/543 , H04N19/57 , H04N19/577 , H04N19/59 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85 , H04N19/91 , H04N7/32
CPC分类号： H04N19/54
摘要： An apparatus for encoding a digital video signal to reduce a transmission rate of the digital video signal, which comprises a feature point based motion compensation circuit for selecting a set of feature points from the reconstructed reference frame to detect a set of motion vectors between a current frame and a original reference frame corresponding to the set of feature points by using a feature point based motion estimation, and for generating a second predicted frame based on the set of motion vectors and the reconstructed reference frame. The feature point based motion estimation employs a convergence process in which a displacement of each of the feature points are given to a motion vector thereof and the six triangles of each of the hexagon are affine-transformed independently using the displacements of their vertex feature points. If the displacements provide a better PSNR, the motion vector of the subject feature point is sequentially updated. Therefore, the inventive convergence process is very efficient in the matching process to determine the predicted image as close as possible to the original image having zooming, rotation or scaling of objects.
摘要翻译：一种用于对数字视频信号进行编码以减少数字视频信号的传输速率的装置，其包括基于特征点的运动补偿电路，用于从重建的参考帧中选择一组特征点，以检测电流之间的一组运动矢量帧和通过使用基于特征点的运动估计对应于特征点集合的原始参考帧，并且用于基于运动矢量和重建的参考帧的集合来生成第二预测帧。基于特征点的运动估计使用收敛过程，其中每个特征点的位移被赋予其运动矢量，并且使用其顶点特征点的位移来对每个六边形的六个三角形进行仿射变换。如果位移提供更好的PSNR，则主题特征点的运动矢量被顺序更新。因此，本发明的融合过程在匹配过程中非常有效，以将预测图像尽可能接近具有对象的变焦，旋转或缩放的原始图像。

83. 发明授权

US5966183A Signal converter and signal conversion method 失效
标题翻译：信号转换器和信号转换方法
公开(公告)号：US5966183A
公开(公告)日：1999-10-12
申请号：US619182
申请日：1996-03-21
申请人： Tetsujiro Kondo , Yasuhiro Fujimori
发明人： Tetsujiro Kondo , Yasuhiro Fujimori
IPC分类号： G06T9/00 , H03M7/30 , H04N7/01 , H04N19/00 , H04N19/102 , H04N19/132 , H04N19/136 , H04N19/182 , H04N19/189 , H04N19/19 , H04N19/192 , H04N19/196 , H04N19/59 , H04N19/60 , H04N19/80 , H04N19/98 , H04N5/21
CPC分类号： H04N19/80 , H04N7/0125 , H04N7/0135
摘要： The present invention relates to a signal converter and a signal conversion method in which an interpolated image is formed on the basis of suitable classification according to features of an input image signal to obtain a high-definition image signal. In a frequency characteristic determination section, frequency characteristics of an input image signal are classified and evaluated with respect to each of predetermined unit blocks. On the basis of the result of this classification, the desired one of a plurality of pixel patterns is selected with respect to each of the unit blocks of the input image signal, thereby setting a spatial class. In a classification section, the input image signal forming the selected pixel pattern undergoes data compression processing by the number of quantization bits according to the frequency characteristics, thereby forming a spatial class after compression. Interpolated pixels are formed from the input image signal by using prediction coefficients or predicted values based on the spatial class after compression.
摘要翻译：本发明涉及一种信号转换器和信号转换方法，其中根据输入图像信号的特征，根据合适的分类形成内插图像以获得高分辨率图像信号。在频率特性确定部分中，输入图像信号的频率特性对于每个预定单位块进行分类和评估。基于该分类的结果，相对于输入图像信号的每个单位块选择多个像素图案中的期望的一个，从而设置空间等级。在分类部分中，形成所选择的像素图案的输入图像信号根据频率特性进行量化位数的数据压缩处理，从而在压缩之后形成空间等级。通过使用基于压缩后的空间等级的预测系数或预测值，从输入图像信号形成插值像素。

84. 发明授权

US5911006A Method and apparatus for controlling a quantity of codes representative of image data 失效
标题翻译：用于控制表示图像数据的代码量的方法和装置
公开(公告)号：US5911006A
公开(公告)日：1999-06-08
申请号：US906698
申请日：1997-08-06
申请人： Kenji Funamoto , Kenji Ito
发明人： Kenji Funamoto , Kenji Ito
IPC分类号： H04N19/60 , G06T9/00 , H03M7/30 , H04N1/41 , H04N19/124 , H04N19/132 , H04N19/149 , H04N19/172 , H04N19/186 , H04N19/192 , H04N19/196 , H04N19/423 , H04N19/59 , H04N19/625 , H04N19/91 , G06K9/36
CPC分类号： G06T9/00
摘要： A method and an apparatus for controlling the quantity of codes representative of image data are disclosed. Image data representative of a single scene are thinned and then subjected to orthogonal transform in order to generate transform coefficients. The transform coefficients are normalized in accordance with the initial value of a normalization factor and then coded by compression. The quantity of the resulting codes is compared with a first target value. A value of the normalization factor corresponding to the first target value is calculated on the basis of the result of the above comparison in accordance with a relation between the normalization factor and the quantity of codes. Subsequently, the entire image data representative of a single scene are subjected to orthogonal transform, and the resulting transform coefficients are normalized by the above value of the normalization factor. The transform coefficients normalized by this normalization are coded by compression. The quantity of the resulting codes is compared with a second target value. A value of the normalization factor corresponding to the second target value is calculated on the basis of the result of the comparison using the second target value. The value corresponding to the second target value is used to repeat the normalization of the transform coefficients and coding. Such a procedure is repeated until the count of the compressed data satisfies the second target value within a preselected range.
摘要翻译：公开了一种用于控制表示图像数据的代码量的方法和装置。表示单个场景的图像数据被稀疏化，然后进行正交变换，以便生成变换系数。变换系数根据归一化因子的初始值进行归一化，然后通过压缩进行编码。将所得代码的数量与第一目标值进行比较。根据归一化因子与代码量之间的关系，根据上述比较的结果计算与第一目标值对应的归一化因子的值。随后，对表示单个场景的整个图像数据进行正交变换，并且通过归一化因子的上述值对所得到的变换系数进行归一化。通过归一化归一化的变换系数通过压缩进行编码。将所得代码的数量与第二目标值进行比较。基于使用第二目标值的比较结果，计算与第二目标值对应的归一化因子的值。对应于第二目标值的值用于重复变换系数和编码的归一化。重复这样一个过程，直到压缩数据的计数满足预选范围内的第二目标值。

85. 发明授权

US5903669A Image processing apparatus and method 失效
标题翻译：图像处理装置及方法
公开(公告)号：US5903669A
公开(公告)日：1999-05-11
申请号：US591154
申请日：1996-01-25
申请人： Yasuji Hirabayashi
发明人： Yasuji Hirabayashi
IPC分类号： H04N19/00 , G06T9/00 , H04N19/119 , H04N19/136 , H04N19/14 , H04N19/192 , H04N19/196 , H04N19/36 , H04N19/46 , H04N19/463 , H04N19/625 , H04N19/70 , H04N19/90 , H04N19/91 , G06K9/36
CPC分类号： G06T9/007
摘要： In compressing an image in units of blocks, the image is compressed in accordance with the size of a redundant portion of the image to increase the compression factor of the image data. An image compression apparatus for encoding an image in units of blocks includes a size discrimination unit for discriminating a block image size suitable for encoding and compressing a predetermined image area, a generation unit for dividing the image area to generate a plurality of block images having different sizes on the basis of the discrimination result of the size discrimination unit, and a compression unit for compressing each block image data representing a block image and generated from the generation unit, on the basis of the size of the block image data.
摘要翻译：在以块为单位压缩图像时，根据图像的冗余部分的大小压缩图像，以增加图像数据的压缩因子。用于以块为单位对图像进行编码的图像压缩装置包括用于鉴别适合于对预定图像区域进行编码和压缩的块图像尺寸的尺寸鉴别单元，用于分割图像区域以生成具有不同的多个块图像的生成单元基于尺寸判别单元的判别结果的尺寸;以及压缩单元，用于根据块图像数据的大小来压缩表示块图像并从生成单元生成的块图像数据。

86. 发明授权

US5859673A Motion estimation method and apparatus for calculating a motion vector 失效
标题翻译：用于计算运动矢量的运动估计方法和装置
公开(公告)号：US5859673A
公开(公告)日：1999-01-12
申请号：US880646
申请日：1997-06-23
申请人： Takayuki Kobayashi , David Wuertele , Yutaka Okada
发明人： Takayuki Kobayashi , David Wuertele , Yutaka Okada
IPC分类号： H04N19/50 , G06T7/20 , H03M7/30 , H03M7/40 , H04N5/14 , H04N19/102 , H04N19/105 , H04N19/134 , H04N19/136 , H04N19/137 , H04N19/167 , H04N19/176 , H04N19/189 , H04N19/192 , H04N19/196 , H04N19/42 , H04N19/503 , H04N19/51 , H04N19/57 , H04N9/64
CPC分类号： G06T7/202 , H04N19/43 , H04N19/51 , H04N5/145 , G06T2207/10016
摘要： Herein described are a motion estimation method and a motion estimation apparatus for calculating a motion vector to estimate a current picture based on a reference picture. The current picture is partially formed by a current block represented by pel values. The reference picture is partially formed by a search window represented by pel values and having a plurality of candidate blocks. There are provided processor elements and side register units arranged in the form of a matrix array. The pel values of the search window are fed to the processor elements and the side register units. The pel values of the current block are fed to the processor elements. Between the processor elements and the side register units, are shifted pel values of the search window. The processor elements are designed to calculate distortion values each indicative of a difference between the current block and each of the candidate blocks on the basis of the received pel values of the search window and the received pel values of the current block. The method and apparatus are characterized in that, at one of the adjoining two columns of the matrix array, the pel values of the search window are shifted only in an upward direction, while, at the other of the adjoining two columns of the matrix array, the pel values of the search window are shifted only in a downward direction.
摘要翻译：这里描述了一种运动估计方法和运动估计装置，用于基于参考图像计算运动矢量以估计当前图像。当前图像部分地由由像素值表示的当前块形成。参考图片由由像素值表示并具有多个候选块的搜索窗口部分地形成。提供了以矩阵阵列的形式布置的处理器元件和侧面寄存器单元。搜索窗口的像素值被馈送到处理器元件和侧寄存器单元。当前块的像素值被馈送到处理器元件。在处理器元件和侧面寄存器单元之间，是搜索窗口的偏移像素值。处理器元件被设计为基于接收的搜索窗口的像素值和当前块的接收像素值来计算每个指示当前块和每个候选块之间的差异的失真值。该方法和装置的特征在于，在矩阵阵列的相邻两列之一处，搜索窗口的像素值仅在向上方向移动，而在矩阵阵列的相邻两列中的另一列搜索窗口的像素值仅向下移动。

87. 发明授权

US5734743A Image processing method and apparatus for block-based corresponding point extraction 失效
标题翻译：基于块的对应点提取的图像处理方法和装置
公开(公告)号：US5734743A
公开(公告)日：1998-03-31
申请号：US503405
申请日：1995-07-11
申请人： Masakazu Matsugu , Katsumi Iijima
发明人： Masakazu Matsugu , Katsumi Iijima
IPC分类号： G01B11/00 , G06T1/00 , G06T7/00 , H04N5/208 , H04N5/268 , H04N13/00 , H04N19/102 , H04N19/105 , H04N19/119 , H04N19/134 , H04N19/136 , H04N19/139 , H04N19/14 , H04N19/167 , H04N19/176 , H04N19/192 , H04N19/196 , H04N19/20 , H04N19/423 , H04N19/46 , H04N19/50 , H04N19/51 , H04N19/537 , H04N19/57 , H04N19/70 , H04N19/80 , H04N19/85 , G06T9/20
CPC分类号： G06T1/00
摘要： An image processing method and apparatus for block-based corresponding-point extraction with high-precision, even if an image includes a discontinuous portion. The method comprises an extraction step of extracting edges or outline of a plurality of images, a dividing step of dividing the images into a plurality of blocks in such a manner that every block contains no edge and the sides of every block do not intersect with an edge, and a corresponding-point determination step of determining corresponding points between the images, based on similarity between one block of one image and a corresponding block of another image. Thus, even if one of the images includes a discontinuous portion, the corresponding-point extraction can be smoothly performed.
摘要翻译：即使图像包括不连续部分，也可以高精度地进行基于块的对应点提取的图像处理方法和装置。该方法包括：提取步骤，提取多个图像的边缘或轮廓;分割步骤，将图像分割成多个块，使得每个块不包含边缘，并且每个块的边不与边缘，以及基于一个图像的一个块和另一个图像的对应块之间的相似度来确定图像之间的对应点的对应点确定步骤。因此，即使图像中的一个包括不连续部分，也可以平滑地进行对应点提取。

88. 发明授权

US5389973A Quantization control circuit 失效
标题翻译：量化控制电路
公开(公告)号：US5389973A
公开(公告)日：1995-02-14
申请号：US38806
申请日：1993-03-29
申请人： Takuya Kitamura , Yoshihiro Murakami
发明人： Takuya Kitamura , Yoshihiro Murakami
IPC分类号： H04N5/92 , G06T9/00 , H04N5/926 , H04N19/126 , H04N19/134 , H04N19/154 , H04N19/174 , H04N19/192 , H04N19/196 , H04N19/42 , H04N19/423 , H04N19/60 , H04N19/625 , H04N19/65 , H04N19/70 , H04N19/85 , H04N19/88 , H04N19/91 , H04N19/93 , H04N7/133
CPC分类号： H04N5/9264 , H04N19/126 , H04N19/147 , H04N19/15 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/85 , H04N19/88 , H04N19/124 , H04N19/146 , H04N19/30 , H04N5/9267
摘要： A quantization control circuit determines an optimum scaling factor for quantizing orthogonal transformation coefficient data that correspond to a predetermined time period of a digital video signal. A first scaling factor is determined from the orthogonal transformation coefficient data as a function of whether a bit rate determined by quantizing the orthogonal transformation coefficient data using an initial scaling factor is greater than a target bit rate. A corrected scaling factor is determined by calculating second scaling factors that are each derived from the first scaling factor. Error values are calculated from the second scaling factors using the orthogonal transformation coefficient data, and the second scaling factor that corresponds to the minimum error value is selected as the corrected scaling factor.
摘要翻译：量化控制电路确定用于量化与数字视频信号的预定时间段相对应的正交变换系数数据的最佳缩放因子。根据通过使用初始缩放因子量化正交变换系数数据确定的比特率是否大于目标比特率，从正交变换系数数据确定第一缩放因子。通过计算每个从第一比例因子导出的第二缩放因子来确定校正的比例因子。使用正交变换系数数据从第二比例因子计算误差值，并且选择对应于最小误差值的第二比例因子作为校正的比例因子。

89. 发明授权

US5136376A Method of coding video signals and transmission system thereof 失效
标题翻译：编码视频信号的方法及其传输系统
公开(公告)号：US5136376A
公开(公告)日：1992-08-04
申请号：US596250
申请日：1990-10-12
申请人： Yoichi Yagasaki , Jun Yonemitsu
发明人： Yoichi Yagasaki , Jun Yonemitsu
IPC分类号： H04N19/50 , G06T9/00 , H04N9/804 , H04N19/115 , H04N19/126 , H04N19/134 , H04N19/149 , H04N19/176 , H04N19/192 , H04N19/196 , H04N19/423 , H04N19/503 , H04N19/593 , H04N19/91
CPC分类号： H04N9/8042 , H04N19/115 , H04N19/126 , H04N19/14 , H04N19/149 , H04N19/172 , H04N19/61 , H04N19/124 , H04N19/146 , H04N19/152
摘要： In a video signal coding method for generating transmission data, a digital video signal is quantized by a quantization step which is controlled on the basis of significant picture information to be transmitted. The significant picture information is, for example, the quantity of information in a main region and in a sub region, the quantity of picture information to be coded, the picture motion in coded regions, the amount of variations in picture information between regions to be coded, or the components of spatial frequency with respect to regions to be coded. By reason of such control of the quantization step, deterioration of picture quality of the transmission data can be avoided, while the quantity of transmitted data is reduced.

90. 发明授权

US11621725B2 Methods and devices for vector segmentation for coding 有权
公开(公告)号：US11621725B2
公开(公告)日：2023-04-04
申请号：US17572808
申请日：2022-01-11
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Tomas Jansson Toftgård , Volodya Grancharov , Jonas Svedberg
IPC分类号： H04N19/124 , H03M7/30 , H04N19/192 , H04N19/94 , G06F17/16 , G10L19/038
摘要： A method for partitioning of input vectors for coding is presented. The method comprises obtaining of an input vector. The input vector is segmented, in a non-recursive manner, into an integer number, NSEG, of input vector segments. A representation of a respective relative energy difference between parts of the input vector on each side of each boundary between the input vector segments is determined, in a recursive manner. The input vector segments and the representations of the relative energy differences are provided for individual coding. Partitioning units and computer programs for partitioning of input vectors for coding, as well as positional encoders, are presented.

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