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公开(公告)号：US20190149837A1
公开(公告)日：2019-05-16
申请号：US16249146
申请日：2019-01-16
Inventor： Sung Chang Lim , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Dong San Jun , Jong Ho Kim , Ha Hyun Lee , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/513 , H04N19/426 , H04N19/61 , H04N19/44
Abstract: The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.
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公开(公告)号：US10212448B2
公开(公告)日：2019-02-19
申请号：US15439322
申请日：2017-02-22
Inventor： Hae-Chul Choi , Se Yoon Jeong , Sukhee Cho , Hui Yong Kim , Jinho Lee , Hahyun Lee , Sung-Chang Lim , Jongho Kim , Jin Soo Choi , Jin Woo Hong , Jin Woong Kim
IPC: H04N19/52 , H04N19/513 , H04N19/172 , H04N19/176
Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.
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公开(公告)号：US10205952B2
公开(公告)日：2019-02-12
申请号：US15694569
申请日：2017-09-01
Inventor： Sung Chang Lim , Se Yoon Jeong , Jong Ho Kim , Hui Yong Kim , Dae Yeol Lee , Suk Hee Cho , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/186 , H04N19/176 , H04N19/61 , H04N19/159
Abstract: The present invention provides an image encoding apparatus carrying out inter-color prediction, comprising a residual block acquisition module obtaining a residual block with respect to a first color component and a residual block with respect to a second color component from a difference between an input block and a prediction block; an inter-color component prediction module carrying out inter-color component prediction by generating a residual signal reflecting a difference between a residual block with respect to the first color component and a residual block with respect to the second color component; a transform module generating a transformat coefficient by carrying out transformation with respect to the residual signal; a quantization module generating quantized data by carrying out quantization with respect to the transform coefficient; and an entropy encoding module carrying out entropy encoding by removing statistical redundancy of the quantized data.
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公开(公告)号：US09961344B2
公开(公告)日：2018-05-01
申请号：US15219487
申请日：2016-07-26
Applicant: Electronics and Telecommunications Research Institute , Kwangwoon University Industry-Academic Collaboration Foundation , University-Industry Cooperation Group of Kyung Hee University , Korea Advanced Institute of Science and Technology
Inventor： Sung-Chang Lim , Ha Hyun Lee , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Hae Chul Choi , Jong Ho Kim , Jin Ho Lee , Jin Soo Choi , Jin Woo Hong , Dong Hyu Sim , Seoung Jun Oh , Gwang Hoon Park , Mun Churl Kim , Neung Joo Hwang , Sea Nae Park
IPC: H04N19/122 , H04N19/159 , H04N19/13 , H04N19/14 , H04N19/176 , H04N19/124 , H04N19/625 , H04N19/50 , H04N19/60 , H04N19/12 , H04N19/18 , H04N19/182 , H04N19/107 , H04N19/11 , H04N19/119 , H04N19/139 , H04N19/44 , H04N19/52 , H04N19/55 , H04N19/593 , H04N19/615 , H04N19/91
CPC classification number: H04N19/122 , H04N19/107 , H04N19/11 , H04N19/119 , H04N19/12 , H04N19/124 , H04N19/13 , H04N19/139 , H04N19/14 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/44 , H04N19/50 , H04N19/52 , H04N19/55 , H04N19/593 , H04N19/60 , H04N19/615 , H04N19/625 , H04N19/91
Abstract: Provided is a video encoding apparatus, including a signal separator to separate a differential image block into a first domain and a second domain, based on a boundary line included in the differential image block, the differential image block indicating a difference between an original image and a prediction image with respect to the original image, a transform encoder to perform a transform encoding with respect to the first domain using a discrete cosine transform (DCT), a quantization unit to quantize an output of the transform encoding unit in a frequency domain, a space domain quantization unit to quantize the second domain in a space domain, and an entropy encoder to perform an entropy encoding using outputs of the quantization unit and the space domain quantization unit.
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公开(公告)号：US09942554B2
公开(公告)日：2018-04-10
申请号：US15192627
申请日：2016-06-24
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION , UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
Inventor： Hae Chul Choi , Se Yoon Jeong , Sung-Chang Lim , Jin Soo Choi , Jin Woo Hong , Dong Gyu Sim , Seoung-Jun Oh , Chang-Beom Ahn , Gwang Hoon Park , Seung Ryong Kook , Sea-Nae Park , Kwang-Su Jeong
IPC: G06K9/36 , H04N19/159 , H04N19/11 , H04N19/124 , H04N19/132 , H04N19/44 , H04N19/50 , H04N19/587 , H04N19/593 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/91 , H04N19/147 , H04N19/176 , H04N19/182 , H04N19/51 , H04N19/615 , H04N19/105 , H04N19/117 , H04N19/43 , H04N19/172
CPC classification number: H04N19/159 , H04N19/105 , H04N19/11 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/43 , H04N19/44 , H04N19/50 , H04N19/51 , H04N19/587 , H04N19/593 , H04N19/61 , H04N19/615 , H04N19/625 , H04N19/70 , H04N19/91
Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
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Patent Agency Ranking
公开(公告)号：US09838691B2
公开(公告)日：2017-12-05
申请号：US15489290
申请日：2017-04-17
Inventor： Sung Chang Lim , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Jong Ho Kim , Ha Hyun Lee , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn
IPC: H04N19/00 , H04N19/124 , H04N19/463 , H04N19/196 , H04N19/119 , H04N19/14 , H04N19/70 , H04N19/176
CPC classification number: H04N19/124 , H04N19/119 , H04N19/14 , H04N19/176 , H04N19/196 , H04N19/33 , H04N19/463 , H04N19/70
Abstract: The present invention relates to a video encoding method and apparatus for setting and encoding quantization parameters, and to a video decoding method and apparatus for decoding and setting quantization parameters in a video encoding and decoding apparatus which uses blocks having various sizes and depths as encoding and decoding units.
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公开(公告)号：US09811882B2
公开(公告)日：2017-11-07
申请号：US14860972
申请日：2015-09-22
Inventor： Dae Yeol Lee , Se Yoon Jeong , Suk Hee Cho , Jong Ho Kim , Hui Yong Kim , Sung Chang Lim , Jin Soo Choi
CPC classification number: G06T3/4053 , H04N7/0117
Abstract: A method of processing a super resolution image using adaptive preprocessing filtering and/or postprocessing filtering is provided. A provided image processing apparatus may determine a preprocessing filter and a postprocessing filter based on frames included in a reference interval among a plurality of intervals in an input video, may perform filtering on the frames in the reference interval based on the preprocessing filter, may reconstruct a high frequency signal of each of the frames on which the filtering is performed, and may perform filtering on the frames, each having the reconstructed high frequency signal, based on the postprocessing filter.
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98.发明授权公开(公告)号：US09749632B2
公开(公告)日：2017-08-29
申请号：US15338484
申请日：2016-10-31
Inventor： Sung Chang Lim , Hui Yong Kim , Se Yoon Jeong , Jong Ho Kim , Ha Hyun Lee , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/124 , H04N19/186 , H04N19/463 , H04N19/157 , H04N19/122 , H04N19/46 , H04N19/105 , H04N19/117 , H04N19/13 , H04N19/15 , H04N19/159 , H04N19/43 , H04N19/61 , H04N19/174 , H04N19/176
CPC classification number: H04N19/124 , H04N19/105 , H04N19/117 , H04N19/122 , H04N19/13 , H04N19/15 , H04N19/157 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/43 , H04N19/46 , H04N19/463 , H04N19/61
Abstract: Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.
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公开(公告)号：US09743082B2
公开(公告)日：2017-08-22
申请号：US14643785
申请日：2015-03-10
Applicant: Electronics and Telecommunications Research Institute , Kwangwoon University Industry-Academic Collaboration Foundation , University-Industry Cooperation Group of Kyung Hee University
Inventor： Sung Chang Lim , Ha Hyun Lee , Se Yoon Jeong , Hui Yong Kim , Suk Hee Cho , Jong Ho Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn , Dong Gyu Sim , Seoung Jun Oh , Gwang Hoon Park , Sea Nae Park , Chan Woong Jeon
IPC: H04N19/117 , H04N19/46 , H04N19/593 , H04N19/132 , H04N19/17 , H04N19/50 , H04N19/109 , H04N19/159 , H04N19/174 , H04N19/192 , H04N19/82
CPC classification number: H04N19/117 , H04N19/109 , H04N19/132 , H04N19/159 , H04N19/17 , H04N19/174 , H04N19/176 , H04N19/192 , H04N19/46 , H04N19/50 , H04N19/593 , H04N19/82
Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.
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公开(公告)号：US09332281B2
公开(公告)日：2016-05-03
申请号：US14469236
申请日：2014-08-26
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION , UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
Inventor： Hae Chul Choi , Se Yoon Jeong , Sung-Chang Lim , Jin Soo Choi , Jin Woo Hong , Dong Gyu Sim , Seoung-Jun Oh , Chang-Beom Ahn , Gwang Hoon Park , Seung Ryong Kook , Sea-Nae Park , Kwang-Su Jeong
IPC: G06K9/36 , H04N19/91 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/593 , H04N19/11 , H04N19/132 , H04N19/587 , H04N19/124 , H04N19/44 , H04N19/625
CPC classification number: H04N19/159 , H04N19/105 , H04N19/11 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/43 , H04N19/44 , H04N19/50 , H04N19/51 , H04N19/587 , H04N19/593 , H04N19/61 , H04N19/615 , H04N19/625 , H04N19/70 , H04N19/91
Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
Abstract translation: 本发明涉及图像编码和解码技术，更具体地说，涉及使用单向预测的图像编码器和解码器。 图像编码器包括将宏块划分为多个子块的分割单元，单向应用确定单元，用于确定是否将相同的预测模式应用于多个子块中的每一个;以及预测模式确定单元 基于所述单向应用确定单元的确定结果来确定关于所述多个子块中的每一个的预测模式。
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