公开(公告)号：US09445089B2

公开(公告)日：2016-09-13

申请号：US14001841

申请日：2012-03-06

申请人： Naoki Ono ,  Atsushi Shimizu ,  Masaki Kitahara ,  Seisuke Kyochi

发明人： Naoki Ono ,  Atsushi Shimizu ,  Masaki Kitahara ,  Seisuke Kyochi

IPC分类号： H04N19/103 ,  H04N19/176 ,  H04N19/517 ,  H04N19/57 ,  H04N19/17 ,  H04N19/139 ,  H04N19/137

CPC分类号： H04N19/17 ,  H04N19/103 ,  H04N19/137 ,  H04N19/139 ,  H04N19/176 ,  H04N19/517 ,  H04N19/57

摘要： A video encoding device, which uses intra encoding and inter encoding with motion compensation with respect to an input video signal, includes a determination unit which determines whether the input video signal to be encoded corresponds to a stationary region, a region having minute motion, or a region having normal motion, a first encoding unit which performs inter encoding of a motion vector (0, 0) with respect to a region determined as a stationary region by the determination unit, a second encoding unit which performs motion search and inter encoding in a limited search range with respect to a region determined as a region having minute motion by the determination unit, and a third encoding unit which performs motion search and inter encoding in a normal search range with respect to a region determined as a region having normal motion by the determination unit.

摘要翻译： 一种视频编码装置，其使用相对于输入视频信号的运动补偿的帧内编码和帧间编码，包括确定单元，其确定要编码的输入视频信号是否对应于静止区域，具有微小运动的区域，或者 具有正常运动的区域，第一编码单元，其通过所述确定单元相对于被确定为静止区域的区域执行运动矢量（0,0）的编码;第二编码单元，其执行运动搜索和帧间编码 相对于由确定单元确定为具有微小运动的区域的区域的有限搜索范围，以及第三编码单元，其针对被确定为具有正常运动的区域的正常搜索范围进行运动搜索和帧间编码 由确定单元。

公开(公告)号：US20130343453A1

公开(公告)日：2013-12-26

申请号：US13978099

申请日：2012-03-05

申请人： Masaki Kitahara ,  Atsushi Shimizu ,  Naoki Ono ,  Seisuke Kyochi

发明人： Masaki Kitahara ,  Atsushi Shimizu ,  Naoki Ono ,  Seisuke Kyochi

IPC分类号： H04N7/26

CPC分类号： H04N19/196 ,  H04N19/124 ,  H04N19/14 ,  H04N19/593

摘要： A quantization control apparatus provided in a video encoding apparatus which utilizes intra slices. The quantization control apparatus includes a similarity computation device that computes similarity between an intra slice region of an encoding target picture and an intra slice region of each of previously-encoded pictures, where the similarity is an index determined such that the closer the images of the two different intra slices, the higher the similarity; a picture selection device that selects a picture having the highest similarity from among the previously-encoded pictures, based on the similarity computed by the similarity computation device; and a quantization step determination device that determines a quantization step used for encoding the encoding target picture, based on encoding information for the picture selected by the picture selection device.

摘要翻译： 一种量化控制装置，其设置在利用片内的视频编码装置中。 量化控制装置包括相似度计算装置，该相似度计算装置计算编码对象图像的片内区域与每个先前编码图像的帧内片区域之间的相似度，其中相似度被确定为使得近似图像 两个不同的片段，相似度越高; 图像选择装置，基于由相似度计算装置计算的相似度，从先前编码的图像中选择具有最高相似度的图像; 以及量化步骤确定装置，其基于由图像选择装置选择的图像的编码信息，确定用于对编码对象图像进行编码的量化步长。

公开(公告)号：US08548064B2

公开(公告)日：2013-10-01

申请号：US12087040

申请日：2006-12-29

申请人： Masaki Kitahara ,  Hideaki Kimata ,  Shinya Shimizu ,  Kazuto Kamikura ,  Yoshiyuki Yashima ,  Masayuki Tanimoto ,  Toshiaki Fujii ,  Kenji Yamamoto

发明人： Masaki Kitahara ,  Hideaki Kimata ,  Shinya Shimizu ,  Kazuto Kamikura ,  Yoshiyuki Yashima ,  Masayuki Tanimoto ,  Toshiaki Fujii ,  Kenji Yamamoto

IPC分类号： H04N7/12

CPC分类号： H04N19/147 ,  H04N13/122 ,  H04N19/19 ,  H04N19/503 ,  H04N19/597

摘要： A video encoding method for encoding video images as a single video image by using parallax compensation which performs prediction by using parallax between the video images, and a corresponding decoding method. The number of parameters as parallax data used for the parallax compensation is selected and set for each reference image. Data of the set number of parameters is encoded, and parallax data in accordance with the number of parameters is encoded. During decoding, parallax-parameter number data, which is included in encoded data and designates the number of parameters as parallax data for each reference image, is decoded, and parallax data in accordance with the number of parameters is decoded, where the parallax data is included in the encoded data.

摘要翻译： 一种视频编码方法，用于通过使用通过使用视频图像之间的视差执行预测的视差补偿来将视频图像编码为单个视频图像，以及相应的解码方法。 为每个参考图像选择并设置用于视差补偿的视差信息的参数的数量。 对设定参数数量的数据进行编码，并且对根据参数数量的视差数据进行编码。 在解码期间，解码编码数据中包含的视差参数号码数据，并指定作为每个参照图像的视差数据的参数个数，根据参数数量对视差数据进行解码， 包含在编码数据中。

公开(公告)号：US08451894B2

公开(公告)日：2013-05-28

申请号：US12086709

申请日：2007-01-04

申请人： Masayuki Tanimoto ,  Toshiaki Fujii ,  Kenji Yamamoto ,  Masaki Kitahara ,  Hideaki Kimata ,  Shinya Shimizu ,  Kazuto Kamikura ,  Yoshiyuki Yashima

发明人： Masayuki Tanimoto ,  Toshiaki Fujii ,  Kenji Yamamoto ,  Masaki Kitahara ,  Hideaki Kimata ,  Shinya Shimizu ,  Kazuto Kamikura ,  Yoshiyuki Yashima

IPC分类号： H04N7/12 ,  H04N7/50

CPC分类号： H04N19/64 ,  H04N19/105 ,  H04N19/147 ,  H04N19/176 ,  H04N19/597 ,  H04N19/61

摘要： By using parallax compensation which performs prediction by using parallax between video images, the video images are encoded as a single video image. Reference parallax for a target image to be encoded is set, wherein the reference parallax is estimated using a reference image; area division in an image frame is set; parallax displacement for each divided area is set, wherein the parallax displacement is the difference between the reference parallax and parallax for the parallax compensation; data of the area division is encoded; and data for indicating the parallax displacement is encoded. During decoding, reference parallax for a target image to be decoded is set, wherein it is estimated using a reference image; data for indicating area division, which is included in encoded data, is decoded; and data of parallax displacement, which is included in the encoded data, is decoded for each area indicated by the area division data.

摘要翻译： 通过使用通过使用视频图像之间的视差执行预测的视差补偿，将视频图像编码为单个视频图像。 设置要编码的目标图像的参考视差，其中使用参考图像来估计参考视差; 设置图像帧中的区域划分; 设定每个分割区域的视差位移，其中视差位移是视差补偿的参考视差和视差之差; 区域划分的数据被编码; 并且用于指示视差位移的数据被编码。 在解码期间，设置要解码的目标图像的参考视差，其中使用参考图像来估计; 包含在编码数据中的用于指示区域划分的数据被解码; 并且包括在编码数据中的视差位移的数据对于由区域划分数据指示的每个区域被解码。

公开(公告)号：US20130058584A1

公开(公告)日：2013-03-07

申请号：US13610948

申请日：2012-09-12

申请人： Shinya SHIMIZU ,  Masaki KITAHARA ,  Kazuto KAMIKURA ,  Yoshiyuki YASHIMA

发明人： Shinya SHIMIZU ,  Masaki KITAHARA ,  Kazuto KAMIKURA ,  Yoshiyuki YASHIMA

IPC分类号： G06K9/36

CPC分类号： H04N19/527 ,  H04N19/147 ,  H04N19/19 ,  H04N19/523 ,  H04N19/597

摘要： An image encoding method includes determining corresponding points on an encoding target image, which correspond to pixels on a reference image, based on distance from a camera of the reference image to an object, and positional relationship between cameras; computing a parallax vector from each pixel position to the corresponding point in pixel space; computing a target predictive vector having the same start as the parallax vector and components obtained by rounding off components of the parallax vector; computing a target reference vector having the same start as the parallax vector and the same size and direction as a differential vector between the target predictive vector and the parallax vector; and setting a predicted value of a pixel on the encoding target image, which is indicated by the target predictive vector, to a value of a pixel on the reference image, which is indicated by the target reference vector.

摘要翻译： 图像编码方法包括基于从参考图像的相机到对象的距离以及相机之间的位置关系来确定与参考图像上的像素相对应的编码对象图像上的对应点; 计算从每个像素位置到像素空间中对应点的视差矢量; 计算具有与视差矢量相同的开始的目标预测矢量，以及通过舍入视差矢量的分量而获得的分量; 计算具有与视差矢量相同的开始和与目标预测矢量和视差矢量之间的差分矢量相同的大小和方向的目标参考矢量; 以及将由目标预测矢量表示的编码对象图像上的像素的预测值设定为由目标参照矢量表示的参照图像上的像素的值。

公开(公告)号：US20130058396A1

公开(公告)日：2013-03-07

申请号：US13695768

申请日：2011-04-20

申请人： Atsushi Shimizu ,  Naoki Ono ,  Masaki Kitahara

发明人： Atsushi Shimizu ,  Naoki Ono ,  Masaki Kitahara

IPC分类号： H04N7/26

CPC分类号： H04N19/164 ,  H04N19/124 ,  H04N19/132 ,  H04N19/152 ,  H04N19/172 ,  H04N19/61

摘要： A video encoding control method for controlling encoding of an input video signal. The method includes the steps of detecting an underflow of a decoder buffer; if the underflow of the decoder buffer has been detected, suppressing an amount of generated code by skipping an encoding target picture or by encoding the encoding target picture so as to produce a minimum amount of generated code; after suppressing the amount of generated code, comparing a current rate of occupancy in the decoder buffer with a predetermined threshold for the rate of occupancy in the decoder buffer; and performing a control for continuously suppressing the amount of code generated for each encoding target image by using the above step of suppressing the amount of generated code until the rate of occupancy in the decoder buffer exceeds the threshold based on a result of the above comparison.

摘要翻译： 一种用于控制输入视频信号的编码的视频编码控制方法。 该方法包括检测解码器缓冲器的下溢的步骤; 如果已经检测到解码器缓冲器的下溢，则通过跳过编码目标图像来抑制所生成的代码量，或通过对编码目标图像进行编码以产生最小量的生成代码; 在抑制所生成的代码量之后，将解码器缓冲器中的当前占用率与解码器缓冲器中占用率的预定阈值进行比较; 基于上述比较的结果，通过使用上述抑制生成代码量的步骤，直到解码器缓冲器的占有率超过阈值，执行连续地抑制针对每个编码对象图像生成的代码量的控制。

公开(公告)号：US20130051458A1

公开(公告)日：2013-02-28

申请号：US13695865

申请日：2011-05-02

申请人： Masaki Kitahara ,  Atsushi Shimizu ,  Naoki Ono

发明人： Masaki Kitahara ,  Atsushi Shimizu ,  Naoki Ono

IPC分类号： H04N7/26

CPC分类号： H04N19/117 ,  H04N19/124 ,  H04N19/15 ,  H04N19/172 ,  H04N19/177 ,  H04N19/192 ,  H04N19/196 ,  H04N19/198

摘要： Video encoding is realized with small deterioration in image quality while suppressing underflow of a coded picture buffer (CPB) and with a smaller calculation amount than conventional 2-pass encoding. A video encoding control method which encodes an input video signal by controlling a generated bit rate so that a hypothetical buffer in a decoder does not fail includes: a step of sequentially encoding each picture in an encoding-order picture group in accordance with a predetermined encoding parameter, the encoding-order picture group including a predetermined number of pictures and being a collection of successive pictures in the order of encoding; a step of calculating a quantization statistic of each picture based on quantization parameter information used to encode each picture each time each picture is encoded, and checking whether or not the quantization statistic exceeds a predetermined threshold value, and a step of if the quantization statistic exceeds the predetermined threshold value, changing the encoding parameter so that the generated bit rate resulting from encoding is reduced and performing re-encoding from a first picture of an encoding-order picture group that is being encoded using the changed encoding parameter.

摘要翻译： 在抑制编码图像缓冲器（CPB）的下溢并且以比传统的2遍编码更小的计算量的情况下，以较小的图像质量劣化实现视频编码。 一种视频编码控制方法，其通过控制生成的比特率来对输入视频信号进行编码，使得解码器中的假想缓冲器不失败包括：根据预定编码对编码次序图像组中的每个图像进行顺序编码的步骤 参数，编码顺序图像组包括预定数量的图像，并且是编码顺序的连续图像的集合; 在每个图像被编码时，基于用于对每个图像进行编码的量化参数信息，并且检查量化统计量是否超过预定阈值，并且如果量化统计量超过的步骤，则计算每个图像的量化统计量的步骤 预定阈值，改变编码参数，使得由编码产生的生成比特率减小，并且使用改变后的编码参数从编码顺序图像组的第一图像执行重新编码。

公开(公告)号：US20120320985A1

公开(公告)日：2012-12-20

申请号：US13576617

申请日：2011-02-04

申请人： Masaki Kitahara ,  Atsushi Shimizu ,  Mayuko Watanabe

发明人： Masaki Kitahara ,  Atsushi Shimizu ,  Mayuko Watanabe

IPC分类号： H04N7/26

CPC分类号： H04N19/521 ,  H04N19/52 ,  H04N19/61

摘要： In a moving picture encoding apparatus, a primary candidate reference motion vector-setting unit sets N primary candidate reference motion vectors. A degree of reliability calculation unit calculates the reliability of each primary candidate reference motion vector, which represents effectiveness in predicting a motion vector of a block to be decoded, using coded or decoded image information. A reference motion vector determination unit selects secondary candidate reference motion vectors with reliability higher than a predetermined threshold value from the N primary candidate reference motion vectors. A motion vector prediction unit creates a predictive motion vector of a block to be coded using M (M

摘要翻译： 在运动图像编码装置中，主要候选基准运动矢量设定部设定N个主要候选基准运动矢量。 一定程度的可靠性计算单元使用编码或解码图像信息来计算表示用于预测要解码的块的运动矢量的有效性的每个主要候选参考运动矢量的可靠性。 参考运动矢量确定单元从N个主要候选参考运动矢量中选择具有高于预定阈值的可靠性的次要候选参考运动矢量。 运动矢量预测单元使用具有高可靠性的M（M

公开(公告)号：US20120294371A1

公开(公告)日：2012-11-22

申请号：US13576609

申请日：2011-02-08

申请人： Masaki Kitahara ,  Atsushi Shimizu ,  Mayuko Watanabe

发明人： Masaki Kitahara ,  Atsushi Shimizu ,  Mayuko Watanabe

IPC分类号： H04N7/32

CPC分类号： H04N19/521 ,  H04N19/52 ,  H04N19/533 ,  H04N19/56

摘要： In motion vector prediction encoding, the efficiency of motion vector prediction is improved and the efficiency of moving picture encoding is improved. A motion search is performed for a block to be encoded in a picture to be encoded using an encoded reference picture to calculate a motion vector. A plurality of blocks which include at least one of encoded blocks in the picture to be encoded and encoded blocks in an encoded picture and in predetermined positions relative to the position of the block to be encoded in the picture to be encoded are set as primary candidate blocks, and N primary candidate reference motion vectors are determined from motion vectors used in encoding the primary candidate blocks. The degrees of reliability of the primary candidate reference motion vectors which quantitatively represent effectiveness in motion vector prediction of the block to be encoded is calculated using encoded picture information for each of the primary candidate reference motion vectors. Top M primary candidate reference motion vectors with higher degrees of reliability are selected from the primary candidate reference motion vectors as secondary candidate reference motion vectors. A predictive motion vector of the block to be encoded is calculated using the secondary candidate reference motion vectors, and a residual between the motion vector obtained through the motion search of the block to be encoded and the predictive motion vector is encoded as encoded information of the motion vector.

摘要翻译： 在运动矢量预测编码中，提高了运动矢量预测的效率，提高了运动图像编码的效率。 对要编码的图像中的块进行运动搜索，以使用编码的参考图片来编码，以计算运动矢量。 将要编码的图像中的编码块和编码图像中的编码块中的至少一个相对于要编码的图像中要编码的块的位置的预定位置中的至少一个的块设置为主要候选 块和N个主要候选参考运动矢量由用于编码主候选块的运动矢量确定。 使用用于每个主要候选参考运动矢量的编码图像信息来计算定量表示要编码的块的运动矢量预测中的有效性的主要候选参考运动矢量的可靠度。 从主要候选参考运动矢量中选择具有较高可靠度的顶级M个主要候选参考运动矢量作为次要候选参考运动矢量。 使用第二候选参考运动矢量来计算要编码的块的预测运动矢量，并且通过运动搜索获得的要被编码的块的运动矢量与预测运动矢量之间的残差被编码为 运动矢量。

公开(公告)号：US20100086222A1

公开(公告)日：2010-04-08

申请号：US12441234

申请日：2007-09-18

申请人： Shinya Shimizu ,  Masaki Kitahara ,  Kazuto Kamikura ,  Yoshiyuki Yashima

发明人： Shinya Shimizu ,  Masaki Kitahara ,  Kazuto Kamikura ,  Yoshiyuki Yashima

IPC分类号： G06K9/36

CPC分类号： H04N19/103 ,  H04N19/147 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597 ,  H04N19/61

摘要： An image encoding method includes determining and encoding global parallax data which is probably correct parallax data in consideration of the Epipolar geometry constraint between a camera of a standard viewpoint, which is selected from the entire multi-viewpoint images, and images obtained by all the other viewpoints; generating base parallax data for each camera as a viewpoint other than the standard viewpoint, where the base parallax data is probably correct parallax data in consideration of the Epipolar geometry constraint between the image of the relevant camera and the images of all the other cameras based on the global parallax data and the camera parameters; determining and encoding correction parallax data used for correcting the base parallax data, so as to indicate parallax data between the image of the relevant camera and an already-encoded reference viewpoint image used for parallax compensation; and encoding the image of the relevant camera by using parallax data obtained by correcting the base parallax data by means of the correction parallax data.

摘要翻译： 图像编码方法包括：考虑到从整个多视点图像中选择的标准视点的相机之间的双极几何约束，以及所有其他图像获得的图像，确定和编码可能是正确的视差数据的全局视差数据 观点; 生成基准视差数据作为除了标准视点以外的视点的基准视差数据，其中考虑到相机的图像和所有其它相机的图像之间的对极几何约束，基准视差数据可能是正确的视差信息，基于 全局视差数据和摄像机参数; 确定和编码用于校正基准视差数据的校正视差数据，以便指示相关摄像机的图像与用于视差补偿的已经编码的参考视点图像之间的视差信息; 并且通过使用通过校正视差数据校正基准视差数据而获得的视差信息来对相关相机的图像进行编码。