CAJ | 학술논문

针对牛顿插值算法信息利用率不高的缺点，提出了一种改进的单帧图像超分辨率算法。利用源图像中的像素点信息，同时从多个方向计算牛顿插值结果，并根据源图像中各像素点的相关性通过融合计算获得超分辨率图像的插值结果。该方法既提高了源图像中信息的利用率，又减小了插值误差的累积。仿真实验结果表明，利用改进方法所获得的超分辨率图像更细腻清晰，尤其图像边缘区域所包含的大量细节信息可得到有效恢复。改进算法所获得的超分辨率图像的峰值信噪比、均方误差以及视觉信息保真度等评价指标均优于传统方法。
침대우돈삽치산법신식이용솔불고적결점，제출료일충개진적단정도상초분변솔산법。이용원도상중적상소점신식，동시종다개방향계산우돈삽치결과，병근거원도상중각상소점적상관성통과융합계산획득초분변솔도상적삽치결과。해방법기제고료원도상중신식적이용솔，우감소료삽치오차적루적。방진실험결과표명，이용개진방법소획득적초분변솔도상경세니청석，우기도상변연구역소포함적대량세절신식가득도유효회복。개진산법소획득적초분변솔도상적봉치신조비、균방오차이급시각신식보진도등평개지표균우우전통방법。
In order to improve the Newton interpolation algorithm, a new super-resolution algorithm of single-frame image is proposed. The Newton interpolation results are computed from multi-directions by the pixels in the original image. The reconstruction results of super-resolution image are obtained by the fusion of interpolation results according to the correla-tion of the pixels in the original image. The improved method can not only enhance the utilization rate of the information contained in the original image, but also decrease accumulation error of interpolation. Simulation results show that the super-resolution image obtained by the improved algorithm is fine and distinct. A lot of detail information in marginal regions can be recovered validly. The method has better key performance indicators, such as peak signal-to-noise ratio, mean square error and visual information fidelity, than conventional methods.