Butterworth滤波在POCS超分辨率重构中的应用

运动中获取的图像易产生降质,需要进行图像复原。由于传统POCS方法重构的图像容易产生边缘效应,质量较差。为使边缘信息在进行凸集投影时能较好的适应固定凸集约束,本文根据图像边缘方向变化快的特点,提出在迭代过程中加入一次Butterworth低通滤波进行少许平滑,经过分析发现对图像进行平滑后的重构图像质量得到改善,最后给出了实验证明。

The Application of Butterworth Filter in POCS Super-resolution Reconstruction

Usually we obtain a sequence of blurred images when the relative motion occurred between images and camera. Theconventional POCS algorithm is prone to produce unwanted edge oscillatory, therefore, we analyze the characteristic of thePOCS algorithm, then we propose a new method which can reduce edge oscillation. We use Butterworth low pass filter just onceto suppress edge oscillation. Simulated experiment results are provided finally.