公开(公告)号：KR1020070074487A

公开(公告)日：2007-07-12

申请号：KR1020070001386

申请日：2007-01-05

Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단

Inventor： 정세윤 ,  서정일 ,  김규헌 ,  강경옥 ,  홍진우 ,  이영렬 ,  김대연 ,  김동균 ,  오승준 ,  심동규 ,  안창범

IPC: H04N19/91

CPC classification number: H04N19/00 ,  H04N19/91

Abstract: 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.

Abstract translation: 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。