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    • 21. 发明申请
    • METHOD AND APPARATUS FOR CODING/DECODING IMAGE
    • 用于编码/解码图像的方法和装置
    • WO2013002549A3
    • 2013-03-14
    • PCT/KR2012005075
    • 2012-06-27
    • SK TELECOM CO LTDLIM JEONGYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOHAN JONGKIKWAK JAEHEEKIM JEONG PILKIM HYUNDONG
    • LIM JEONGYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOHAN JONGKIKWAK JAEHEEKIM JEONG PILKIM HYUNDONG
    • H04N7/32H04N7/50
    • H04N19/124H04N19/12H04N19/122H04N19/134H04N19/139H04N19/176H04N19/61
    • Embodiments according to the present invention relate to a method and an apparatus for coding/decoding an image using a high precision filter. One embodiment according to the present invention provides a method for coding/decoding an image, comprising: an image coding step for generating a prediction block of a current block, and transforming a residual block which is generated by subtracting the prediction block so as to generate a frequency transformation block, wherein a different transformation method is used according to a transform unit to generate the frequency transformation block, and then quantizing and coding same into a bitstream; and an image decoding step for extracting information on the frequency transformation block, which is quantized from the bitstream, and on the transform unit, and inverse-quantizing the frequency transformation block that is quantized to recover the frequency transformation block, and inverse-transforming the frequency transformation block to recover the residual block, wherein a different inverse-transformation method is used according to the transform unit that is extracted, thereby recovering the frequency transformation block, and the prediction block is generated from a reference block, which is referenced by a motion vector and the recovered residual block and the prediction block are added, thereby recovering the current block.
    • 根据本发明的实施例涉及一种使用高精度滤波器对图像进行编码/解码的方法和装置。 根据本发明的一个实施例提供了一种用于对图像进行编码/解码的方法,包括:图像编码步骤,用于生成当前块的预测块,并且通过减去预测块来生成残差块,以产生 频率变换块,其中根据变换单元使用不同的变换方法来生成频率变换块,然后将其量化和编码为比特流; 以及图像解码步骤,用于提取从比特流量化的频率变换块的信息,以及变换单元,对量化的频率变换块进行逆量化,以恢复频率变换块,并对 频率变换块以恢复残差块,其中根据提取的变换单元使用不同的逆变换方法,从而恢复频率变换块,并且从参考块生成预测块,该参考块由 运动矢量和恢复的残差块和预测块相加,从而恢复当前块。
    • 23. 发明申请
    • VIDEO ENCODING/DECODING APPARATUS AND METHOD
    • 视频编码/解码设备和方法
    • WO2011129672A2
    • 2011-10-20
    • PCT/KR2011002762
    • 2011-04-18
    • SK TELECOM CO LTDSONG JINHANLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOHAN JONGKIPARK HYOUNGMEELEE JUOCK
    • SONG JINHANLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOHAN JONGKIPARK HYOUNGMEELEE JUOCK
    • H04N7/24
    • H04N19/61
    • The present invention relates to a video encoding/decoding apparatus and method. The video encoding/decoding apparatus according to one embodiment of the present invention comprises: a video encoder that generates predicted sub-blocks by predicting sub-blocks into which a macro block is divided, generates residual sub-blocks by subtracting the sub-blocks and the predicted sub-blocks, generates quantized transform coefficients by transforming and quantizing the residual sub-blocks using a transformation scheme which is selected by the size of the sub-block, generates video data encoded by encoding the quantized transform coefficients, and selectively calculates and obtains an encoding cost when an encoding mode is determined for at least one of the block type, prediction mode, transformation type and motion vector for the divided sub-blocks; and a video decoder that restores information about the division type, motion and transformation type as well as the quantized transform coefficients, restores the residual sub-blocks by performing the inverse-quantization and inverse-transformation on the quantized transform coefficients following a transformation scheme which is identified by the transformation type information having been restored, generates predicted sub-blocks, on the basis of the motion information having been restored, by predicting sub-blocks which are identified by the division type information having been restored, and restores sub-blocks by subtracting the predicted sub-blocks and residual sub-blocks.
    • 本发明涉及视频编码/解码装置和方法。 根据本发明的一个实施例的视频编码/解码装置包括:视频编码器,通过预测划分出宏块的子块来产生预测子块,通过减去子块产生残余子块, 预测子块通过使用由子块的大小选择的变换方案来变换和量化残差子块来生成量化变换系数,生成通过对量化的变换系数进行编码而编码的视频数据,并选择性地计算和 当为分割子块的块类型,预测模式,变换类型和运动矢量中的至少一个确定编码模式时,获得编码成本; 以及视频解码器,其恢复关于分割类型,运动和变换类型以及量化变换系数的信息,通过对变换方案之后的量化变换系数执行逆量化和逆变换来恢复残留子块, 由已经恢复的变换类型信息识别,通过预测由已经被恢复的分割类型信息识别的子块,基于已经恢复的运动信息生成预测子块,并且恢复子块 通过减去预测的子块和残余子块。
    • 28. 发明申请
    • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING ADAPTIVE MOTION VECTOR RESOLUTION
    • 使用自适应运动矢量分辨率编码/解码图像的方法和装置
    • WO2011021915A3
    • 2011-06-16
    • PCT/KR2010005572
    • 2010-08-23
    • SK TELECOM CO LTDKIM SUNYEONLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOLEE JUOCKKIM DONGWON
    • KIM SUNYEONLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOLEE JUOCKKIM DONGWON
    • H04N7/32H04N7/36
    • H04N19/523H04N19/56H04N19/61
    • The present invention relates to an apparatus and a method for determining a motion vector. The apparatus for determining the motion vector according to an embodiment of the present invention comprises: a block identification unit for identifying a same position block included in a reference picture as a block which is at the same position as a present block; a motion block determination unit for determining whether the present block is a motion block on the basis of the motion vector of the same position block; a motion vector decision unit for deciding the motion vector of the present block according to the determined result; and a resolution conversion unit for converting the resolution of the motion vector of the same position block. According to the present invention, the motion vector resolution is decided in each image region or each motion vector. Inter-prediction encoding or decoding is performed by using the motion vector having the motion vector resolution which is adaptively decided with respect to images. In addition, the present invention enables efficient encoding by adaptively changing the motion vector resolution in predetermined region units of the images and performing the inter-prediction encoding for the images.
    • 本发明涉及用于确定运动矢量的装置和方法。 根据本发明的实施例的用于确定运动矢量的装置包括:块识别单元,用于将包括在参考图片中的相同位置块识别为与当前块位于相同位置的块; 运动块确定单元,用于基于相同位置块的运动矢量来确定当前块是否是运动块; 运动矢量决定单元,用于根据确定的结果来决定当前块的运动矢量; 以及分辨率转换单元,用于转换相同位置块的运动矢量的分辨率。 根据本发明,在每个图像区域或每个运动矢量中确定运动矢量分辨率。 通过使用具有相对于图像自适应地决定的运动矢量分辨率的运动矢量来执行帧间预测编码或解码。 另外,本发明能够通过在图像的预定区域单位中自适应地改变运动矢量分辨率并执行图像的帧间预测编码来实现高效编码。
    • 30. 发明申请
    • METHOD AND APPARATUS FOR INTRA-PREDICTION ENCODING/DECODING
    • 用于预测编码/解码的方法和装置
    • WO2011021910A2
    • 2011-02-24
    • PCT/KR2010005567
    • 2010-08-21
    • SK TELECOM CO LTDKIM SUNYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOKIM DAEYEONLIM JEONGYEON
    • KIM SUNYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOKIM DAEYEONLIM JEONGYEON
    • H04N7/32
    • H04N19/11H04N19/61H04N19/70
    • The present invention relates to a method and an apparatus for intra-prediction encoding/decoding. The present invention provides an image encoding method comprising the steps of: selecting an intra prediction mode of each block to be encoded in an input image as a predetermined intra prediction mode or an intra prediction mode according to a predetermined mode decision method; generating a coefficient bit by encoding a residual block generated through the intra prediction of each block according to the selected intra prediction mode; generating a mode bit by encoding a mode identifier indicating the intra prediction mode according to the predetermined mode decision method; generating a bit stream including a mode bit field having the mode bit for one or more block and a coefficient bit field having the coefficient bit for each block; and inserting a mod bit field identifier for identifying the mode bit field into the bit stream. The present invention can improve a compression speed by simplifying a prediction mode selection process for compressing the image and can improve the compression efficiency by reducing the size of the compressed data.
    • 本发明涉及用于帧内预测编码/解码的方法和装置。 本发明提供一种图像编码方法,包括以下步骤:根据预定模式决定方法,将输入图像中要编码的每个块的帧内预测模式选择为预定帧内预测模式或帧内预测模式; 通过根据所选择的帧内预测模式对通过每个块的帧内预测生成的残差块进行编码来生成系数比特; 通过根据预定模式决定方法对表示帧内预测模式的模式标识符进行编码来生成模式比特; 产生包括具有一个或多个块的模式位的模式位字段和具有每个块的系数位的系数位字段的位流; 以及将用于将模式位字段识别为位流的mod位字段标识符插入。 本发明可以通过简化用于压缩图像的预测模式选择处理来提高压缩速度,并且可以通过减小压缩数据的大小来提高压缩效率。