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    • 42. 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。
    • 44. 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。
    • 48. 发明申请
    • ENERGY CORRECTION DEVICE THROUGH TRANSFORM DOMAIN PIXEL GROUPING AND METHOD THEREOF
    • 通过变换域像素分组的能量校正装置及其方法
    • WO2012023770A3
    • 2012-05-31
    • PCT/KR2011005975
    • 2011-08-12
    • SK TELECOM CO LTDSONG JINHANLIM JEONGYEONKIM YONGGOOCHOE YOONSIKCHOI YUNG HOHONG SOON GI
    • SONG JINHANLIM JEONGYEONKIM YONGGOOCHOE YOONSIKCHOI YUNG HOHONG SOON GI
    • G06T5/00
    • H04N19/86H04N19/63
    • Disclosed are an improved energy correction device through pixel grouping and a method thereof. According to an embodiment of the present invention, the energy correction device which corrects an error of an image comprises: a pixel value transformation unit which performs pixel value transformations for an original image and a decoded image, and obtains each piece of directional information; Fig. 6 S601 Obtain directional information by performing pixel value transformation for image S603 Classify obtained directional information into plurality of domains, and extract group energy representative value from each of classified domains S605 Calculate energy correction value on the basis of difference between group energy representative value extracted from decoded image and group energy representative value extracted from original image AA Start BB End a group energy extraction unit which classifies each piece of obtained directional information into a plurality of domains, and extracts group energy representative values that represent the corresponding domains from each of the classified domains; and a correction value calculation unit which calculates an energy correction value on the basis of a difference between a group energy representative value extracted from the decoded image and a group energy representative value extracted from the original image.
    • 公开了一种通过像素分组的改进的能量校正装置及其方法。 根据本发明的一个实施例,校正图像误差的能量校正装置包括:对原始图像和解码图像执行像素值变换并获得每条方向信息的像素值变换单元; 图。 6 S601通过对图像S603进行像素值变换来获取方向性信息将获得的方向信息分类为多个域,并从各个分类域提取组能量代表值S605基于从提取的组能量代表值之间的差计算能量校正值 从原始图像提取的解码图像和组能量代表值AA启动BB结束将每个获得的方向信息分类成多个域的组能量提取单元,并且从每个被分类的组中提取表示相应域的组能量代表值 域; 以及校正值计算单元,其基于从解码图像提取的组能量代表值与从原始图像提取的组能量代表值之间的差计算能量校正值。
    • 50. 发明申请
    • METHOD AND DEVICE FOR PREDICTING COLOR SPACE USING PLURALITY OF FREQUENCY DOMAIN WEIGHTING PREDICTION FILTERS, AND METHOD AND DEVICE FOR ENCODING/DECODING IMAGE USING SAME
    • 使用频域加权预测滤波器的多项式来预测彩色空间的方法和装置,以及使用它们编码/解码图像的方法和装置
    • WO2012011670A3
    • 2012-04-05
    • PCT/KR2011004513
    • 2011-06-21
    • SK TELECOM CO LTDSONG JINHANLIM JEONGYEONCHOE YOONSIKKIM YONGGOOCHOI YUNG HOJEONG JINWOO
    • SONG JINHANLIM JEONGYEONCHOE YOONSIKKIM YONGGOOCHOI YUNG HOJEONG JINWOO
    • H04N7/24H04N11/04
    • H04N19/117
    • One embodiment of the present invention relates to a method and a device for predicting a color space using a plurality of frequency domain weighting prediction filters, and to a method and a device for encoding/decoding an image using same. According to one embodiment, the present invention provides the device and the method for predicting the color space comprising: a prediction weight calculating unit for determining a weighted block from the encoded/decoded peripheral blocks of the current block, and for calculating the prediction weight for each of the frequency domains using the weighted block; a prediction frequency selection unit for calculating a prediction gain for each of the frequency domains from the prediction weight for each of the frequency domains, and for selecting the frequency domain to be used for predicting the color space by using the prediction gain for each of the frequency domains; and a frequency domain prediction unit for receiving remaining transformed blocks, and for predicting the color space in the remaining transformed blocks from the prediction gain of the selected frequency domain. The present invention also provides the device and the method for predicting the color space and the method and the device for encoding/decoding the image using same, comprising: the prediction weight calculating unit for determining the weighted block from the encoded/decoded peripheral blocks of the current block, and for calculating the prediction weight for each of the frequency domains using the current weighted block; the prediction frequency selection unit for calculating the prediction gain for each of the frequency domains from the prediction weight for each of the frequency domains, and for selecting the frequency domain to be used for predicting the color space by using the prediction gain for each of the frequency domains; and a frequency domain recovery unit for recovering the remaining transformed blocks from the color space prediction block using the prediction gain of the selected frequency domain.
    • 本发明的一个实施例涉及一种使用多个频域加权预测滤波器来预测颜色空间的方法和装置,以及使用其对图像进行编码/解码的方法和装置。 根据一个实施例,本发明提供了一种用于预测颜色空间的装置和方法,包括:预测权重计算单元,用于从当前块的编码/解码外围块确定加权块,并且用于计算预测权重 每个频域使用加权块; 预测频率选择单元,用于根据每个频域的预测权重来计算每个频域的预测增益,并且通过使用每个频域的预测增益来选择要用于预测颜色空间的频域 频域; 以及频域预测单元,用于接收剩余的变换块,并用于根据所选频域的预测增益来预测剩余变换块中的色空间。 本发明还提供了一种用于预测色彩空间的装置和方法以及使用其编码/解码图像的方法和装置,包括:预测权重计算单元,用于从编码/解码的外围块确定加权块 当前块,并且用于使用当前加权块来计算每个频域的预测权重; 预测频率选择单元,用于根据每个频域的预测权重来计算每个频域的预测增益,并且通过使用每个频域的预测增益来选择要用于预测颜色空间的频域 频域; 以及频域恢复单元,用于使用所选频域的预测增益从颜色空间预测块中恢复剩余的变换块。