{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,22]],"date-time":"2023-10-22T21:11:24Z","timestamp":1698009084435},"reference-count":13,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2007,3,21]],"date-time":"2007-03-21T00:00:00Z","timestamp":1174435200000},"content-version":"vor","delay-in-days":7749,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Systems &amp; Computers in Japan"],"published-print":{"date-parts":[[1986,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In the processing and coding of moving images, the movement of the image is one of the most important parameters. In the realtime processing, it is desirable that the movement be estimated with less computation and simple hardware. From such a viewpoint, this paper proposes a movement estimation method with less computation and satisfactory estimation accuracy. In the proposed method, the gradient method is applied iteratively to the pixel blocks, improving the accuracy of estimation while retaining the merit of the gradient method. This paper describes first the principle of the gradient method, indicating the deterioration of the accuracy. The trend is demonstrated by experiment. Then the principle of the proposed method is described, and it is shown by theoretical discussion and simulation experiment that the accuracy of estimation can be improved. Finally, from the standpoint of motion\u2010compensation coding, a comparison is made with other methods based on the interframe error entropy. As a result, it is shown that estimated movement among adjacent blocks can be utilized in the proposed method, and a motion\u2010compensation performance can be obtained which is as stable as in the matching method, which requires a larger amount of computation.<\/jats:p>","DOI":"10.1002\/scj.4690170209","type":"journal-article","created":{"date-parts":[[2007,7,7]],"date-time":"2007-07-07T11:17:19Z","timestamp":1183807039000},"page":"79-88","source":"Crossref","is-referenced-by-count":1,"title":["Iterative Gradient Method for Movement Estimation"],"prefix":"10.1002","volume":"17","author":[{"given":"Masahiro","family":"Wada","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hirohisa","family":"Yamaguchi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2007,3,21]]},"reference":[{"key":"e_1_2_1_2_2","first-page":"6","article-title":"Motion Correction for Inter\u2010frame Coding Systems","volume":"78","author":"Ninomiya","year":"1978","journal-title":"Tech. Rep. I.E.C.E., Japan"},{"key":"e_1_2_1_3_2","first-page":"54","article-title":"Motion\u2010Compensated Interframe Coding for Video Conference","volume":"81","author":"Koga","year":"1981","journal-title":"Tech. Rep., I.E.C.E., Japan"},{"key":"e_1_2_1_4_2","unstructured":"HiranoandKoga. Motion\u2010compensation interframe coding minimizing transmitted information Nat. Conv. I.E.C.E. Japan 1176(1983)."},{"key":"e_1_2_1_5_2","first-page":"67","article-title":"Measurement of Movement and Velocity of Moving Objects with Picture Signals","volume":"78","author":"Fukinuki","year":"1978","journal-title":"Tech. Rep. I.E.C.E., Japan"},{"key":"e_1_2_1_6_2","first-page":"4","article-title":"Measuring the speed of Moving Objects from Television Signals","volume":"23","author":"Limb J. O.","year":"1975","journal-title":"I.E.E.E. Trans. Commun."},{"key":"e_1_2_1_7_2","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1109\/TIT.1976.1055602","article-title":"Methods for Measuring Small Displacements of Television Images","volume":"22","author":"Cafforio C.","year":"1976","journal-title":"I.E.E.E. Trans. Inf. Theory"},{"key":"e_1_2_1_8_2","first-page":"3","article-title":"Motion\u2010Compensated Television Coding: Part 1","volume":"58","author":"Netravali A. N.","year":"1979","journal-title":"Bell Sys. Tech. J."},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/0146-664X(75)90001-5"},{"key":"e_1_2_1_10_2","first-page":"93","article-title":"Iterative Gradient Method for Movement Estimation","volume":"83","author":"Wada M.","year":"1984","journal-title":"Tech. Rep. I.E.C.E., Japan"},{"key":"e_1_2_1_11_2","unstructured":"M.WadaandH.Yamaguchi. Improved Movement Estimation by Iterative Gradient Method Nat. Conv. I.E.C.E. Japan 1278(1984)."},{"key":"e_1_2_1_12_2","article-title":"Movement Compensation using Iterative Gradient Method","volume":"6","author":"Wada M.","year":"1984","journal-title":"Nat. Conv. TV Soc."},{"key":"e_1_2_1_13_2","unstructured":"H.Yamaguchi AokiandM.Wada. Frame\u2010rate Conversion Using Movement Vector Nat. Conv. TV Soc.6\u20139(1984)."},{"key":"e_1_2_1_14_2","volume-title":"Determining Optical Flow, MIT AI Memo, No. 572","author":"Horn B. K. P.","year":"1980"}],"container-title":["Systems and Computers in Japan"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fscj.4690170209","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/scj.4690170209","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,21]],"date-time":"2023-10-21T05:50:54Z","timestamp":1697867454000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/scj.4690170209"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1986,1]]},"references-count":13,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1986,1]]}},"alternative-id":["10.1002\/scj.4690170209"],"URL":"https:\/\/doi.org\/10.1002\/scj.4690170209","archive":["Portico"],"relation":{},"ISSN":["0882-1666","1520-684X"],"issn-type":[{"value":"0882-1666","type":"print"},{"value":"1520-684X","type":"electronic"}],"subject":[],"published":{"date-parts":[[1986,1]]}}}