摘要
针对毫米波辐射图像分辨率的增强问题,提出一种新的分辨率增强方法,该方法将双三次插值与非线性外推算法相结合。在空间域,通过双三次插值提高原始低分辨率图像的分辨率;在频率域,通过非线性外推算法增加图像的高频分量,最终实现毫米波辐射图像的分辨率增强。实验表明,新方法有效提高了图像的分辨率,并且分辨率增强后的图像具有良好的视觉效果。
Aimed at the problem of resolution enhancement of millimeter - wave radiometric image, a new resolution enhancement method is proposed. This method,which combines bicubic interpolation and nonlinear extrapolation,utilizes bicubic interpolation in spatial domain to enhance the resolution of original low resolution image, and then utilizes nonlinear extrapolation in frequency domain to increase high frequency component of the image, finally, resolution enhancement of millimeter- wave radlometric image is actualized. Experimental results show that the new method can improve the resolution of image effectively,and the image after resolution enhancement has a good visual quality.
出处
《现代电子技术》
2006年第20期78-79,82,共3页
Modern Electronics Technique
基金
教育部留学回国人员科研启动基金(教外司[2004]527号)
四川省科技攻关项目(04GG0210205)
关键词
图像处理
分辨率增强
双三次插值
非线性外推
image processing
resolution enhancement
bicubic interpolation
nonlinear extrapolation
