【摘要】 通过分析球坐标系下的小波收缩去噪法,对阈值函数进行修正,提出了一种较优的收缩判据.与传统的小波收缩去噪方法相比,该判据具有算法简单、工作量小等特点.仿真结果表明,改进的方法提高了图像的信噪比,去噪效果良好。更多还原

【Abstract】 After analyzing wavelet shrinkage in spherical coordinates,a new improved criterion for compaction is proposed by modifying the threshold function.The improved method of de-noising based on wavelet shrinkage in spherical coordinates provides simpler algorithms with less work.Better PSNRs of image can be obtained according to the experimental results.更多还原