摘要
针对CR(Computed Radiography)成像过程中分辨率不足的问题,提出了一种基于小波变换的超分辨率增强方法。该方法通过小波分析方法对低频尺度系数进行灰度值分割,对高频小波系数进行增益操作,并给出了小波系数增强策略。对CR胸部透视图像进行算法验证的结果表明,该算法改善了图像的视觉效果,从而验证了该算法的正确性和有效性。
For the purpose of improving the resolution of CR （Computed Radiography） images, we present a new method based on wavelettransform. The grey level of image is segmented by low frequency coefficient, high frequency coefficient is strengthened anda new enhanced strategy of coefficient is given. The algorithm confirmation has executed to the CR perspective image of the chest, the image visual effect has been improved, and the algorithm accuracy and the validity has been confirmed.
出处
《吉林大学学报（信息科学版）》
CAS
2009年第3期289-292,共4页
Journal of Jilin University（Information Science Edition）
基金
中国科学院二期创新基金资助项目(C02E06Z)
关键词
小波变换
CR图像
超分辨率
wavelet transform
computed radiography （CR） image
super-resolution
