DocumentCode :
108957
Title :
Hybrid Frame Rate Upconversion Method Based on Motion Vector Mapping
Author :
Tsung-Han Tsai ; Hsueh-Yi Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Central Univ., Jhongli, Taiwan
Volume :
23
Issue :
11
fYear :
2013
fDate :
Nov. 2013
Firstpage :
1901
Lastpage :
1910
Abstract :
Liquid crystal displays (LCDs), which serve as receivers of high visual quality video, suffer from motion blur issues. One of the methods in terminating motion blur is motion compensated frame rate upconversion, which is widely adopted in LCDs. In the previous work, i.e., particle-based frame rate upconversion, the computation complexity is high while repeated operations and some improper cost evaluation setup are observed. Therefore, in this paper, hybrid frame rate upconversion is proposed with two features. First, the cost evaluation for particle-based motion trajectory calibration is modified based on the possible noise sources and video resolution variations. Second, repeated operations in particle-based motion trajectory calibration are observed. Therefore, original particle-based motion trajectory calibration is replaced by initial motion vector assignment and subsequent motion vector mapping to achieve computation complexity reduction, while the effective search range is relatively expanded. According to the experiment results, the visual quality is enhanced by 1.87 dB on average, compared with state-of-the-art unidirectional-based frame rate upconversion approaches. On the other hand, the computation complexity of the proposed design is reduced by 25-90% based on target video resolution, concluding a high visual quality and low computation complexity frame rate upconversion design.
Keywords :
image resolution; image restoration; liquid crystal displays; motion compensation; LCD; high visual quality video; hybrid frame rate upconversion method; initial motion vector assignment; liquid crystal display; motion blur issue; motion compensated frame rate upconversion; motion vector mapping; particle-based frame rate upconversion; particle-based motion trajectory calibration; receiver; subsequent motion vector mapping; video resolution variation; Bidirectional motion vector mapping; frame rate upconversion (FRUC); hybrid; iterative motion vector assignment; low computation complexity; noise minimization; resolution adaptive cost evaluation;
fLanguage :
English
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8215
Type :
jour
DOI :
10.1109/TCSVT.2013.2269024
Filename :
6542031
Link To Document :
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