空時(shí)相關(guān)多分辨運(yùn)動(dòng)估計(jì)算法
AN ALGORITHM OF SPATIAL-TEMPORAL CORRELATED MULTIRESOLUTION MOTION ESTIMATION
-
摘要: 本文提出了一個(gè)新的序列圖象運(yùn)動(dòng)矢量估計(jì)算法:空時(shí)相關(guān)多分辨運(yùn)動(dòng)估計(jì)算法,充分利用運(yùn)動(dòng)矢量場在空域相鄰塊,時(shí)域物體運(yùn)動(dòng)和分層父子塊之間的相關(guān)性降低運(yùn)動(dòng)搜索范圍。達(dá)到比三步法還要少的搜索次數(shù),運(yùn)動(dòng)補(bǔ)償增益和運(yùn)動(dòng)矢量熵均比三步法有明顯改善.Abstract: A novel scheme of motion estimation for video sequences, spatial-temporal correlated multiresolution algorithm, is proposed in this paper. This algorithm employs the correlation presented in motion vector field, including spatial-temporal correlation and father-children correlation from hierarchical blocks, to reduce calculating complexity. Motion compensated gain and entropy of motion vector can be improved evidently, but the number of search is less then that of three step method.
-
Netravali A N, Haskell B G. Digital Pictures: Representation and Compress, New York: Plenum Press, 1989, Chap.5.[2]Bierling M. Displacement estimation by hierarchical block matching, SPIE Vol. 1001 VCIP88 942-951.[3]李勁.高性能序列與靜止圖象壓縮的研究:[博士學(xué)位論文].北京,清華大學(xué)電子工程系,1994.[4]Feng F, Lo T K, et al. Adaptive block matching estimation algorithms for video coding, Electron[J].Lett.1995, 31(18):1542-1543[5]Antonini M, Barmaid M, et al. Image coding using wavelet transform[J].IEEE Trans. on Image Processing.1992, 1(2):205-220[6]Burt P J, Adelson E H. The Laplacian pyramid as a compact image code, IEEE Trans. on Communication, 1983, 31(4): 532-540. -
計(jì)量
- 文章訪問數(shù): 1710
- HTML全文瀏覽量: 96
- PDF下載量: 354
- 被引次數(shù): 0