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1. 发明授权

US11516515B2 Image processing apparatus, image processing method and image processing program 有权
公开(公告)号：US11516515B2
公开(公告)日：2022-11-29
申请号：US17273366
申请日：2019-09-11
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Shinobu Kudo , Shota Orihashi , Masaki Kitahara , Atsushi Shimizu
IPC分类号： H04N19/85 , H04N19/80 , H04N19/91
摘要： An image processing apparatus for performing correction for each frame group including a predetermined number of frames into which video data is divided includes a decoding unit configured to obtain a corrected frame group by correcting a second frame group, which is a frame group continuous with a first frame group in time, using a feature quantity of the first frame group. The decoding unit performs the correction so that subjective image quality based on a relationship between the second frame group and a frame group subsequent to the second frame group in time is increased and so that a predetermined classifier classifies that a frame group in which the second frame group is concatenated with the frame group subsequent to the second frame group in time is the same as a frame group in which the corrected frame group is concatenated with a corrected frame group obtained by correcting the frame group subsequent to the second frame group in time.

2. 发明申请

US20140247865A1 VIDEO ENCODING METHOD AND APPARATUS, VIDEO DECODING METHOD AND APPARATUS, AND PROGRAM THEREFOR 审中-公开
标题翻译：视频编码方法和装置，视频解码方法和装置及其程序
公开(公告)号：US20140247865A1
公开(公告)日：2014-09-04
申请号：US14348817
申请日：2012-10-18
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Shohei Matsuo , Yukihiro Bandoh , Takeshi Ito , Seishi Takamura , Atsushi Shimizu , Hirohisa Jozawa
IPC分类号： H04N19/117 , H04N19/139 , H04N19/51 , H04N19/196 , H04N19/182
CPC分类号： H04N19/192 , H04N19/117 , H04N19/15 , H04N19/182 , H04N19/463 , H04N19/523 , H04N19/59
摘要： A generated bit amount of filter coefficients of an adaptive interpolation filter is reduced. A video encoding apparatus using motion compensation includes: a motion detection unit which performs motion search to acquire a motion vector; an interpolation filter coefficient deriving unit which calculates interpolation filter coefficients used for interpolation of a decimal-precision pixel using the motion vector; an interpolation unit which performs the interpolation of the decimal-precision pixel using the interpolation filter coefficients and the motion vector and performs encoding, a parameter selection unit which selects a parameter with which a generated bit amount of the interpolation filter coefficients is minimized from among a plurality of designated parameters in parameters used for entropy encoding of the interpolation filter coefficients, and an encoding processing unit which encodes the selected parameter and the calculated interpolation filter coefficients and outputs an encoded parameter and encoded interpolation filter coefficients.
摘要翻译：自适应内插滤波器的滤波器系数的生成位量减少。使用运动补偿的视频编码装置包括：运动检测单元，执行运动搜索以获取运动矢量; 内插滤波器系数导出单元，其使用所述运动矢量来计算用于十进制精度像素的插值的内插滤波器系数; 内插单元，其使用内插滤波器系数和运动矢量进行十进制精度像素的插值，并进行编码;参数选择单元，从内部滤波器系数的生成位量最小化的参数中选择参数用于内插滤波器系数的熵编码的参数中的多个指定参数，以及编码所选择的参数和所计算的内插滤波器系数的编码处理单元，并输出编码参数和编码的内插滤波器系数。

3. 发明授权

US11595661B2 Encoding amount estimation apparatus, encoding amount estimation method and encoding amount estimation program 有权
公开(公告)号：US11595661B2
公开(公告)日：2023-02-28
申请号：US17273271
申请日：2019-08-26
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Shiori Sugimoto , Seishi Takamura , Atsushi Shimizu
IPC分类号： H04N7/12 , H04N19/14 , H04N19/115 , H04N19/172 , H04N19/80 , G06K9/62 , G06V10/44
摘要： A coding amount estimation device includes: a feature vector generation unit that generates a feature vector on the basis of a feature map generated by an estimation target image and at least one filter set in advance; and a coding amount evaluation unit that evaluates a coding amount of the estimation target image on the basis of the feature vector.

4. 发明授权

US11477460B2 Image processing apparatus, learning appratus, image processing method, learning method and program 有权
公开(公告)号：US11477460B2
公开(公告)日：2022-10-18
申请号：US17298221
申请日：2019-12-03
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Satoshi Suzuki , Motohiro Takagi , Kazuya Hayase , Atsushi Shimizu
IPC分类号： H04N19/154 , H04N19/136 , H04N19/85
摘要： An image processing device includes an image processing unit configured to execute image processing on an image based on an input image and output a result of the image processing, the input image is a post-conversion image obtained by performing image conversion on an original image, and the conversion includes image conversion for further decreasing a data size of the original image while maintaining a feature quantity used in the image processing and processing accuracy of the image processing.

5. 发明授权

US11451805B2 Buffer apparatus 有权
公开(公告)号：US11451805B2
公开(公告)日：2022-09-20
申请号：US16973741
申请日：2019-06-04
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Yuya Omori , Takayuki Onishi , Hiroe Iwasaki , Atsushi Shimizu
IPC分类号： G11B20/00 , H04N13/00 , H04N19/00 , H04N19/423 , H04N19/433 , G11B20/10 , H04N9/00 , H04N7/00 , H04N5/00
摘要： A buffer device stores, in relation to a first area and a second area, which are partial areas respectively located on an identical line of an encoding target frame, and a third area, which is a partial area on the line below the identical line, reference image data for each search range of a reference frame that is referred to during motion search processing executed in order of the first area, the second area, and the third area, the buffer device including a memory for storing the reference image data, and a buffer control unit which, when the motion search processing is executed on the second area, executes control so that among the reference image data included in a first search range that is referred to during the motion search processing of the first area, the reference image data included in a third search range that is referred to during the motion search processing of the third area are left in the memory without being deleted.

6. 发明授权

US11436740B2 Manhole cover abnormity determination apparatus, method, and computer readable medium 有权
公开(公告)号：US11436740B2
公开(公告)日：2022-09-06
申请号：US16971762
申请日：2019-02-19
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Motohiro Takagi , Kazuya Hayase , Tokinobu Mitasaki , Atsushi Shimizu
IPC分类号： G06T7/246 , E02D29/14
摘要： An abnormality determination device includes: an analysis unit that analyzes at least a feature amount related to a pattern of a captured image of a manhole cover, the feature amount being included in coded information obtained by coding the captured image; and a determination unit that determines based on an analysis result of the analysis unit whether the manhole cover is abnormal.

7. 发明授权

US11039132B2 Code amount estimation device, code amount estimation method, and code amount estimation program 有权
公开(公告)号：US11039132B2
公开(公告)日：2021-06-15
申请号：US16978068
申请日：2019-03-04
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Shinobu Kudo , Masaki Kitahara , Atsushi Shimizu
IPC分类号： H04N7/12 , H04N19/115 , H04N19/124 , H04N19/14 , H04N19/149
摘要： A code amount estimation device includes a code amount estimation unit configured to estimate a first target code amount on the basis of a first code amount estimation area in first image information and a code amount estimation model for estimating the first target code amount for each first code amount estimation area using the first code amount estimation area and multiple first quantization parameters determined in advance, and the code amount estimation model is a model generated by associating a second code amount estimation area in second image information, multiple second quantization parameters, and a second target code amount for each second code amount estimation area when coding is performed with respective values of multiple second quantization parameters with each other.

8. 发明授权

US09813709B2 Intra-prediction encoding method, intra-prediction decoding method, intra-prediction encoding apparatus, intra-prediction decoding apparatus, program therefor and recording medium having program recorded thereon 有权
公开(公告)号：US09813709B2
公开(公告)日：2017-11-07
申请号：US14430851
申请日：2013-09-26
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Shohei Matsuo , Masaaki Matsumura , Hiroshi Fujii , Seishi Takamura , Atsushi Shimizu
IPC分类号： H04N19/105 , H04N19/11 , H04N19/136 , H04N19/176 , H04N19/147 , H04N19/593 , H04N19/182 , H04N19/159
CPC分类号： H04N19/105 , H04N19/11 , H04N19/136 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/593
摘要： Setting a reference pixel signal from a decoded pixel signal in intra-prediction in which a prediction signal is generated in the same frame, acquiring prediction mode identification information that identifies an intra-prediction mode, generating a prediction signal based on the reference pixel signal and the prediction mode identification information, making a determination regarding correction of the prediction signal using a reference pixel having a shorter distance from a pixel that is a prediction target in the intra-prediction mode identified by the prediction mode identification information, and correcting the generated prediction signal according to a result of the determination are included in order to provide an image encoding method and an image decoding method capable of improving subjective image quality and coding efficiency using a closer decoded pixel in an intra-prediction process.

9. 发明授权

US09154789B2 Motion vector predictive encoding and decoding method using prediction of motion vector of target block based on representative motion vector 有权
标题翻译：运动矢量预测编码和解码方法，使用基于代表运动矢量的目标块运动矢量预测
公开(公告)号：US09154789B2
公开(公告)日：2015-10-06
申请号：US13738539
申请日：2013-01-10
申请人： Nippon Telegraph and Telephone Corporation
发明人： Atsushi Shimizu , Hirohisa Jozawa , Kazuto Kamikura , Hiroshi Watanabe , Atsushi Sagata , Seishi Takamura
IPC分类号： H04N19/587 , H04N19/51 , H04N19/52 , H04N19/527 , H04N19/537 , H04N19/517
CPC分类号： H04N19/51 , H04N19/517 , H04N19/52 , H04N19/527 , H04N19/537
摘要： A motion vector predictive encoding method, a motion vector decoding method, a predictive encoding apparatus, a decoding apparatuses, and storage media storing motion vector predictive encoding and decoding programs are provided, thereby reducing the amount of generated code with respect to the motion vector, and improving the efficiency of the motion-vector prediction. If the motion-compensating mode of the target small block to be encoded is the global motion compensation, the encoding mode of an already-encoded small block is the interframe coding mode, and the motion-compensating mode of the already-encoded small block is the global motion compensation, then the motion vector of the translational motion model is determined for each pixel of the already-encoded small block, based on the global motion vector (steps S1-S5). Next, the representative motion vector is calculated as the predicted vector, based on the motion vector of each pixel of the already-encoded small block (step S6). Finally, the prediction error is calculated for each component of the motion vector and each prediction error is encoded (steps S7 and S8).
摘要翻译：提供了运动矢量预测编码方法，运动矢量解码方法，预测编码装置，解码装置和存储运动矢量预测编码和解码程序的存储介质，从而减少了相对于运动矢量产生的代码量，并提高运动矢量预测的效率。如果要编码的目标小块的运动补偿模式是全局运动补偿，则已经编码的小块的编码模式是帧间编码模式，并且已经编码的小块的运动补偿模式是全局运动补偿，则基于全局运动矢量确定已经编码的小块的每个像素的平移运动模型的运动矢量（步骤S1-S5）。接下来，基于已经编码的小块的每个像素的运动矢量，计算出代表运动矢量作为预测矢量（步骤S6）。最后，针对运动矢量的每个分量计算预测误差，对每个预测误差进行编码（步骤S7和S8）。

10. 发明申请

US20140341279A1 FRAME RATE CONTROL METHOD, FRAME RATE CONTROL APPARATUS, AND FRAME RATE CONTROL PROGRAM 有权
标题翻译：帧速率控制方法，帧速率控制装置和帧速率控制程序
公开(公告)号：US20140341279A1
公开(公告)日：2014-11-20
申请号：US14365892
申请日：2013-01-21
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Naoki Ono , Atsushi Shimizu , Ken Nakamura , Masaki Kitahara , Seisuke Kyochi
IPC分类号： H04N19/146 , H04N19/587 , H04N19/172 , H04N19/132 , H04N19/156
CPC分类号： H04N19/172 , H04N19/132 , H04N19/146 , H04N19/156 , H04N19/587
摘要： An object is to suppress an instantaneous increase in the computational complexity of an encoder and an information amount of an encoding result without increasing a delay even when input timing of input video is not constant and fluctuates. A frame rate control method for adjusting a frame rate of input video to a frame rate at which an encoder is able to perform encoding includes: a step of determining whether the number of pictures input in the past within a predetermined time from a time when a determination target picture of dropping is input exceeds a predetermined threshold value; and a step of discarding the determination target picture if the number of pictures exceeds the threshold value and designating the determination target picture as an encoding target if the number of pictures does not exceed the threshold value.
摘要翻译：即使在输入视频的输入定时不恒定且波动的情况下，也可以抑制编码器的计算复杂度的瞬时增加和编码结果的信息量而不增加延迟。一种用于将输入视频的帧速率调整为编码器能够进行编码的帧速率的帧速率控制方法，包括：在从预定时间开始的时间内确定过去输入的图像数量的步骤，确定下降的目标图像被输入超过预定阈值; 以及如果图像数量超过阈值则丢弃确定目标图像并且如果图像数量不超过阈值则将确定目标图像指定为编码目标的步骤。

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