@article{Michael1993,
abstract = {The pel-recursive approach to motion estimation has been widely studied for compensating progressively scanned, moderate-resolution video. Although pel-recursive algorithms may not be suitable for application to interlaced high-definition television (HDTV), the underlying principle of backward motion compensation, upon which pel-recursive algorithms are based, can be exploited to improve the existing motion compensation algorithms. This paper proposes applying a backward approach to motion compensation to improve the performance of standard block-based algorithms for motion-compensated interlaced HDTV sequences. First, we describe a framework for motion compensation in which motion information is parameterized by a motion operator and a domain for that operator. Within this framework, we characterize the type of motion information represented by forward (e.g. block-based) and backward approaches to motion compensation. We propose a method for combining these two sources of motion information to form an optimal motion-compensated prediction. Simulations on two interlaced HDTV sequences demonstrate performance improvements between 1 and 2 dB over standard block-based methods. {\textcopyright} 1993.},
author = {Orchard, Michael T. and Katsaggelos, Aggelos K.},
doi = {10.1016/0923-5965(93)90012-I},
issn = {09235965},
journal = {Signal Processing: Image Communication},
keywords = {Motion compensation,interlaced HDTV,pel-recursive motion estimation},
month = {dec},
number = {5-6},
pages = {487--501},
title = {{Backward motion compensation for interlaced HDTV}},
url = {https://linkinghub.elsevier.com/retrieve/pii/092359659390012I},
volume = {5},
year = {1993}
}

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