摘要
对超分辨力插值获得高分辨力图像的方法进行了研究,分析了通常的插值方法和超分辨力插值算法,并根据对MPMAP算法理论的研究提出了一种新的结合传统线性插值和MPMAP理论的插值算法.通过在初始高分辨力图像预处理和MPMAP迭代过程中分别运用双立方插值代替原成像过程的逆过程运算,相对于双线性插值算法可提高图像的峰值信噪比2 dB以上.结果表明,运用此算法对红外热图像进行处理,同样可以有效地提高峰值信噪比,并可获得很好的图像复原效果.
Algorithms of super-resolution interpolation for high resolution images are studied. Some common interpolation algorithms and super-resolution interpolation algorithms are analyzed. Following the study of MPMAP super-resolution algorithm a new kind of interpolation combined bi-cubic interpolation with MPMAP algorithm was proposed. The bi-cubic interpolation is applied to replace the reverse imaging procedure during the MPMAP iterative calculation and preliminary treatment of initial high resolution image. The pulse signal to noise ratio （PSNR） of restored image is improved more than 2 dB compared with bilinear interpolation algorithm. It is further proved that it is effective in improving the PSNR of infrared thermal images and achieve good effects in restoration.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2007年第2期161-165,共5页
Transactions of Beijing Institute of Technology
关键词
超分辨插值
双立方插值
热图像
马尔科夫随机场
最大后验概率
super-resolution interpolation
bi-cubic interpolation
infrared image
Markov random field
maximum posterior probability
