会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 23. 发明公开
    • 조명변화 보상 움직임 예측 부호화 및 복호화 방법 및 장치
    • 编码和解码补偿照明变化的方法和装置
    • KR1020070095837A
    • 2007-10-01
    • KR1020070028225
    • 2007-03-22
    • 한국전자통신연구원세종대학교산학협력단
    • 조숙희권형진허남호김진웅이수인이영렬허재호심동규
    • H04N19/51H04N19/136
    • H04N19/463H04N19/157H04N19/176H04N19/196H04N19/46H04N19/51H04N19/513H04N19/52H04N19/593H04N19/597H04N19/61H04N19/70
    • A motion estimation encoding/decoding apparatus and a method thereof are provided to reduce bits wasted due to the reflection of an amount of illumination change by compressing an amount of the illumination change using spatial closeness of illumination change occurrence areas. An illumination change compensating module(320) differentiates a pixel average value of a present block and a pixel average value of a reference block to perform illumination change compensation. A residual signal generator(330) generates a residual signal by differentiating the present block having been subject to the illumination change compensation the reference block having been subject to the illumination change corresponding to a motion vector. An illumination change predicting module(340) sets an illumination change amount of a neighboring block, which has been subject to the illumination change compensation, as the prediction value of the illumination change amount of the present block. The illumination change predicting module performs a DPCM(Differential Pulse Code Modulation) based on the illumination change amount of the present block and the prediction value of the illumination change amount.
    • 提供了一种运动估计编码/解码装置及其方法,用于通过使用照射变化发生区域的空间接近来压缩照射变化的量来减少由于照射变化量的反射而浪费的比特。 照明改变补偿模块(320)对当前块的像素平均值和参考块的像素平均值进行区分以进行照明变化补偿。 残余信号发生器(330)通过对已经经过照明变化补偿的当前块进行微分来产生残差信号,该参考块已经经受对应于运动矢量的照明改变。 照明变化预测模块(340)将已经进行了照明变化补偿的相邻块的照明变化量设定为当前块的照明变化量的预测值。 照明变化预测模块基于当前块的照明变化量和照明变化量的预测值来执行DPCM(差分脉冲编码调制)。
    • 27. 发明公开
    • 잔여계수의 상관성에 따라 변환기를 선택적으로 이용한부호화/복호화 장치 및 그 방법
    • 使用替代转换器根据残留信号的关联编码和解码的装置和方法
    • KR1020080026463A
    • 2008-03-25
    • KR1020070036089
    • 2007-04-12
    • 한국전자통신연구원광운대학교 산학협력단세종대학교산학협력단
    • 김대연임성창서정일백승권장인선장대영김재곤문경애홍진우김진웅오승준안창범정세윤최해철이영렬심동규
    • H04N19/12H04N19/625
    • H04N19/103H04N19/122H04N19/147H04N19/176H04N19/46H04N19/61
    • An apparatus for encoding and decoding by using a converter alternatively according to the correlation of residual coefficients and a method thereof are provided to select a converter with a highest compression rate by perform an RD(Rate-Distortion) cost optimization using DCT(Discrete Cosine Transform) and DST(Discrete Sine Transform) in generating a quantized conversion coefficient through converters and quantizers after prediction between images or within the images in a predetermined size of block, thereby improving the compression rate of an image block. A first converter(31-34) performs the DCT(Discrete Cosine Transform) in a block unit, first quantization, first inverse quantization and IDCT(Interger-approximated Discrete Cosine Inverse Transform) of residual coefficients which are generated after performing prediction between images or within the images. A second converter(35-38) performs the DST(Discrete Sine Transform) in the block unit, second quantization, second inverse quantization, and IDST(Interger-approximated Discrete Sine Inverse Transform) of the residual coefficients. A selection unit(39) performs RD Cost(Rate-Distortion Cost) to select a converter with a high compression rate by block, and a display unit(40) displays converter information selected by the selection unit on a corresponding flag bit in a macro block unit.
    • 提供了根据剩余系数的相关性或其方法替代地使用转换器进行编码和解码的装置,以通过使用DCT(离散余弦变换)进行RD(速率 - 失真)成本优化来选择具有最高压缩率的转换器 )和DST(离散正弦变换)中,通过转换器和量化器在预测图像之后或在预定大小的块内的图像内生成量化转换系数,从而提高图像块的压缩率。 第一转换器(31-34)以块单位进行DCT(离散余弦变换),在执行图像之间的预测之后产生的剩余系数的第一量化,第一逆量化和IDCT(Interger近似离散余弦逆变换) 在图像内。 第二转换器(35-38)以剩余系数的块单位,第二量化,第二逆量化和IDST(Interger-Neared离散正弦逆变换)执行DST(离散正弦变换)。 选择单元(39)执行RD成本(速率失真成本),以块的方式选择具有高压缩率的转换器,并且显示单元(40)将由选择单元选择的转换器信息显示在宏中的相应标志位上 块单位。
    • 28. 发明公开
    • 동영상 데이터 인코딩/디코딩 방법 및 그 장치
    • 视频数据编码和解码的方法和装置
    • KR1020070074487A
    • 2007-07-12
    • KR1020070001386
    • 2007-01-05
    • 한국전자통신연구원광운대학교 산학협력단
    • 정세윤서정일김규헌강경옥홍진우이영렬김대연김동균오승준심동규안창범
    • H04N19/91
    • H04N19/00H04N19/91
    • A method for encoding/decoding moving picture data and an apparatus therefor are provided to enhance a compression rate by encoding only an index of the most similar vector as a residual transform coefficient among Nx1 vectors corresponding to respective indexes of a codebook in the codebook of residual transform coefficients configured through previous training from different images. A transform and quantization unit(108) generates a vector corresponding to a residual transform coefficient for transforming and quantizing a residual block corresponding to difference between a current block and a predictive block. An optimum vector search unit(110) searches the most similar reference vector as the generated vector among reference vectors corresponding to residual transform coefficients of a sample image. An entropy coding unit(112) performs the entropy coding of an index matched to the searched reference vector.
    • 提供一种用于编码/解码运动图像数据的方法及其装置,用于通过仅编码最相似矢量的索引作为残差变换系数来增强压缩率,该残差变换系数对应于残差码本中的码本的各个索引的N×1矢量 通过从不同图像的先前训练配置的变换系数。 变换和量化单元(108)产生对应于残差变换系数的向量,用于对与当前块和预测块之间的差相对应的残差块进行变换和量化。 最佳向量搜索单元(110)搜索最相似的参考矢量作为与样本图像的残差变换系数相对应的参考矢量中的生成矢量。 熵编码单元(112)执行与所搜索的参考矢量匹配的索引的熵编码。