一种基于验证帧和验证块的帧率上转换算法

Algorithm for Frame Rate Up-conversion Based on Verification Blocks and Verification Frames

为了解决帧率提升中因虚假时间对称性产生的错误运动估计的问题,减少块效应,提出了一种基于验证帧和验证块的双向运动估计算法,该算法首先对待插块进行双向运动估计,然后通过验证帧和验证块对运动估计的结果进行验证,得到较准确运动估计。标准测试序列的实验结果表明,提出的算法与已存算法相比,图像质量在主观和客观方面都有所提高。

In order to resolve the problems of error motion estimation duo to spurious temporal symmetry for frame rate up-conversion and to decrease block artifacts,a novel video frame rate up-conversion algorithm was proposed based on verification block and verification frame. Firstly,the bidirectional matching ratio of the block in inter-frame was calculated,then the results of the motion estimation by verification frame and verification block was verified to obtain a more accurate motion estimation. Experimental results showed that the proposed algorithm provides better subjective and objective quality,when compared to the conventional algorithms.