摘要
在图像超分辨率重建中,需要对低分辨率图像进行插值。在对图像提取边缘的基础上,考虑边缘的方向,先对边缘像素插值,然后对其余零填充像素用双三次插值赋值。最后给出了实验结果,并与最近邻插值、双线性插值及传统的双三次插值进行了比较。结果表明该方法较好地保持了图像的边缘信息。
In the process of image super - resolution reconstruction, there is a need for interpolating pixels in the low - resolution image. On the basis of detecting the edge of low - resolution image and in consideration of its direction, the pixels belong to edges in the reconstructing high -resolution image are interpolated at first. Then, oth- er zero - padding pixels are interpolated by using the bi - cubic method. By comparison with the results of nearest - neighborhood interpolation, bi - linear interpolation and the traditional bi - cubic interpolation, the result of this experiment on Lena image shows that the image edges are better persevered.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2007年第3期78-80,83,共4页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家"863"计划资助项目(2006AA701121)
关键词
超分辨率重建
插值
边缘保持
高分辨率
super - resolution reconstruction
interpolation
edge preserved
high resolution
