超分辨率处理中振铃现象的分析与抑制  

The Analysis and Suppressing of Oscillatory Artifacts in Super-Resolution Image Processing

作　　者：李金宗[1] 黄建明[1] 陈凤[1] 李冬冬[1] 

机构地区：[1]哈尔滨工业大学图像技术与工程研究所,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2003年第6期664-668,共5页Systems Engineering and Electronics

摘　　要：为了抑制在实施FFT插值法重构的超分辨率图像中可能出现的振铃现象 ,深入分析了出现振铃现象的原因及产生条件 ,在此基础上设计了抑制振铃的频域补偿滤波器及其自适应算法。大量实验和比较结果表明 ,处理后的图像不但分辨率有所提高 ,而且未出现振铃现象 ,质量更好 ,从而证明了所设计的抑制振铃频域补偿滤波器及其自适应算法的有效性。In order to suppress oscillatory artifacts which occur in the super resolution image reconstructed with the FFT interpolation method, the cause and condition of the presence of oscillatory artifacts are thoroughly analyzed in this paper. On this basis, a frequency compensation filter(FCF) and the adaptive algorithms for suppressing oscillatory artifacts are designed. The results of a great deal of experiments and experimental comparison show that not only the oscillatory artifacts are suppressed, but also the quality of the processed super resolution image is greatly improved, which proves the validity of the frequency compensation filter and adaptive algorithms proposed.

关 键 词：超分辨率图像 FFT插值法 振铃 频域补偿滤波器 自适应算法 

分 类 号：TN919.8[电子电信—通信与信息系统]