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http://dx.doi.org/10.5762/KAIS.2017.18.7.734

Motion Linearity-based Frame Rate Up Conversion Method  

Kim, Donghyung (Dept. of Computer Science & Information Systems, Hanyang Women's Univ.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.7, 2017 , pp. 734-740 More about this Journal
Abstract
A frame rate up-conversion scheme is needed when moving pictures with a low frame rate is played on appliances with a high frame rate. Frame rate up-conversion methods interpolate the frame with two consecutive frames of the original source. This can be divided into the frame repetition method and motion estimation-based the frame interpolation one. Frame repetition has very low complexity, but it can yield jerky artifacts. The interpolation method based on a motion estimation and compensation can be divided into pixel or block interpolation methods. In the case of pixel interpolation, the interpolated frame was classified into four areas, which were interpolated using different methods. The block interpolation method has relatively low complexity, but it can yield blocking artifacts. The proposed method is the frame rate up-conversion method based on a block motion estimation and compensation using the linearity of motion. This method uses two previous frames and one next frame for motion estimation and compensation. The simulation results show that the proposed algorithm effectively enhances the objective quality, particularly in a high resolution image. In addition, the proposed method has similar or higher subjective quality than other conventional approaches.
Keywords
Frame rate up conversion (FRUC); Bi-directional motion estimation; Frame Interpolation; Overlapping Boundary Matching Algorithm (OBMC); Motion Linearity-based Frame Rate Up Conversion Method (MLFRUC);
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