Quality Enhancement of Frame Rate Up-Converted Video by Adaptive Frame Skip and Reliable Motion Extraction

Authors:
Ya-Ting Yang;Yi-Shin Tung;Ja-Ling Wu
Affiliations:
Nat. Taiwan Univ., Taipei;-;-
Venue:
IEEE Transactions on Circuits and Systems for Video Technology
Year:
2007

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Abstract

Frame rate up-conversion is a postprocessing tool to convert the frame rate from a lower number to a higher one. It is a useful technique for a lot of practical applications, such as display format conversion, low bit rate video coding and slow motion playback. Unlike traditional approaches, such as frame repetition or linear frame interpolation, motion-compensated frame interpolation (MCFI) technique is more efficient since it takes block motion into account. In this paper, by considering the deficiencies of previous works, new criteria and coding schemes for improving motion derivation and interpolation processes are proposed. Next, for video coding applications, adaptive frame skip is executed at the encoder side to maximize the power of MCFI so that the quality of interpolated frames is guaranteed. Experimental results show that our proposal effectively enhances the overall quality of the frame rate up-converted video sequence, both subjectively and objectively.