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http://dx.doi.org/10.9717/kmms.2013.16.1.042

Correction of Rotated Frames in Video Sequences Using Modified Mojette Transform  

Kim, Ji-Hong (동의대학교 영상정보공학과)
Publication Information
Abstract
The camera motion is accompanied with the translation and/or the rotation of objects in frames of a video sequence. An unnecessary rotation of objects declines the quality of the moving pictures and in addition is a primary cause of the viewers' fatigue. In this paper, a novel method for correcting rotated frames in video sequences is presented, where the modified Mojette transform is applied to the motion-compensated area in each frame. The Mojette transform is one of discrete Radon transforms, and is modified for correcting the rotated frames as follows. First, the bin values in the Mojette transform are determined by using pixels on the projection line and the interpolation of pixels adjacent to the line. Second, the bin values are calculated only at some area determined by the motion estimation between current and reference frames. Finally, only one bin at each projection is computed for reducing the amount of the calculation in the Mojette transform. Through the simulation carried out on various test video sequences, it is shown that the proposed scheme has good performance for correcting the rotation of frames in moving pictures.
Keywords
Mojette transform; correction of video sequence; correction of rotated object; Radon transform;
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Times Cited By KSCI : 2  (Citation Analysis)
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