摘要： 针对不同帧速率视频之间的转换问题，提出一种改进的基于双向运动补偿的帧频提升算法，通过边缘加权获取高精度的双向运动向量，利用可变尺寸块运动向量场估计逐级对运动向量求精，采取自适应重叠块补偿方法解决帧频提升过程中产生的重叠及空洞问题，提高双向运动向量的精度，减小块效应。实验结果表明，与传统的帧频提升算法相比，该算法在内插图像主、客观质量方面都有较大提升。

关键词: 帧速率上变换, 双向运动补偿, 可变尺寸块, 重叠块运动补偿

Abstract: This paper proposes a novel video frame rate up-conversion algorithm based on improved bilateral motion compensation. Edge- weighted unidirectional motion estimation is applied to get bilateral motion vectors with high precision, and multi-stage motion vectors refinement is adopted to get more credible motion vectors. It apples the weighted index-based bilateral motion compensated interpolation to reduce artifacts. Experimental results show that the proposed algorithm provides better subjective and objective quality, when compared to the conventional algorithm.

Key words: frame rate up-conversion, bilateral motion compensation, variable-size block, overlapped block motion compensation

中图分类号: 

• TP911.73