一种改进的图像旋转算法

在图像处理中，有时需要对图像进行旋转变换，但是图像在小角度多次旋转变换后，会产生失真．改进的算法是在图像旋转过程中先将图像旋转回原始的位置，再旋转到目标位置．利用该算法对图像进行多次旋转变换实验，实验结果表明，与以步进方式的旋转算法相比，改进算法在旋转的同时较好地保持了图像的细节信息，减小图像的失真．

An Improved Algorithm for Image Revolving

In the image processing, sometimes we need to carry on the rotating transformation to the image. But after rotating the image at mall angle many times, the image could have the distortion. In this paper, the new algorithm firstly rotates, the image to its original position, and then rotates to the target location. To use this algerithm the image is rotated many times in experiment, and the result indicates that, compared with the Algorithm for Step-By-Step Rotation this improved algorithm can well preserve the details of the image during rotation and reduce distortion.