Frequency selective signal extrapolation with applications to error concealment in image communication

被引：63
作者：
Kaup, A
Meisinger, K
Aach, T
机构：
[1] Univ Erlangen Nurnberg, Chair Multimedia Commun & Signal Proc, D-91058 Erlangen, Germany
[2] Rhein Westfal TH Aachen, Inst Image Proc & Comp Vis, D-52056 Aachen, Germany
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2005年 / 59卷 / 03期
关键词：
signal extrapolation; error concealment; image and video communication; X-ray imaging;
D O I：
10.1016/j.aeue.2005.03.015
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Signal extrapolation is an important topic in image communication where it can be used for various prediction purposes such as concealment of image data corrupted by transmission errors. This contribution outlines a method for extrapolating a signal beyond a limited number of known samples. The known signal samples are approximated by a set of basis functions which are defined over an area covering known as well as unknown samples. By minimizing a suitable error criterion and successively selecting the most dominant basis functions, a non band-limited signal extrapolation can be obtained. It is shown that this extrapolation can successfully be used for concealment of transmission errors in video communication as well as elimination of defective pixels in X-ray imaging. (c) 2005 Elsevier GmbH. All rights reserved.
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页码：147 / 156
页数：10
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