针对光学相干层析系统的噪声进行分析,综合对比了多种小波变换方法(包括连续小波变换,离散小波变换和平稳小波变换)在小鼠眼球层析图像处理中的降噪效果。通过均方误差、均方根误差、峰值信噪比以及信噪比四个参数来定量评价不同处理方...针对光学相干层析系统的噪声进行分析,综合对比了多种小波变换方法(包括连续小波变换,离散小波变换和平稳小波变换)在小鼠眼球层析图像处理中的降噪效果。通过均方误差、均方根误差、峰值信噪比以及信噪比四个参数来定量评价不同处理方法的成像效果。实验结果表明,通过采用改进阈值后的平稳小波方法,图像达到的评价效果最好,可以识别出原图所不能观察到的眼球虹膜结构,图像的均方误差下降为原来的35.5%,图像的信噪比提高了25.2%,提高了约4.5 d B。该方法保留了图像中需要的细节信号,使得眼科光学相干层析图像的降噪性能得到了提升。展开更多
To mark the 30th anniversary of China＇s reform and opening, the Communist Party of China, the country＇s ruling party, called for ＂promoting the development of cultural undertakings in the coun- tryside and running ...To mark the 30th anniversary of China＇s reform and opening, the Communist Party of China, the country＇s ruling party, called for ＂promoting the development of cultural undertakings in the coun- tryside and running rural education well.＂ This came at the Third Plenary Session of the Seventeenth Central Committee of the CPC held in October 2007, which set a series of guidelines and policies for the task of building a ＂new, socialist country- side.＂展开更多
文摘针对光学相干层析系统的噪声进行分析,综合对比了多种小波变换方法(包括连续小波变换,离散小波变换和平稳小波变换)在小鼠眼球层析图像处理中的降噪效果。通过均方误差、均方根误差、峰值信噪比以及信噪比四个参数来定量评价不同处理方法的成像效果。实验结果表明,通过采用改进阈值后的平稳小波方法,图像达到的评价效果最好,可以识别出原图所不能观察到的眼球虹膜结构,图像的均方误差下降为原来的35.5%,图像的信噪比提高了25.2%,提高了约4.5 d B。该方法保留了图像中需要的细节信号,使得眼科光学相干层析图像的降噪性能得到了提升。
文摘To mark the 30th anniversary of China＇s reform and opening, the Communist Party of China, the country＇s ruling party, called for ＂promoting the development of cultural undertakings in the coun- tryside and running rural education well.＂ This came at the Third Plenary Session of the Seventeenth Central Committee of the CPC held in October 2007, which set a series of guidelines and policies for the task of building a ＂new, socialist country- side.＂
