图像旋转算法的分析与对比

Analysis and Contrast of Image Rotation Approach

为提高图像旋转补偿算法的效率,需要研究合理的空间变换方法,通过分析直接法、三步法和累加法的基本原理和计算复杂性,比较了三种方法的计算效率。实验表明,累加法减少了图像旋转中大量的浮点运算以及取整运算,可以在保证旋转质量的前提下,使图像旋转的平均处理速度明显提高。

Image rotation algorithms including immediate approach, three-pass approach, accumulative approach are presented. The principles of three algorithms are analysised and their efficiencies are compared. The testing shows that accumulative approach is more efficient than the other algorithms to realize image rotation.