国土资源遥感
國土資源遙感
국토자원요감
REMOTE SENSING FOR LAND & RESOURCES
2014年
2期
38-42
,共5页
孟强强%杨桄%童涛%张俭峰
孟彊彊%楊桄%童濤%張儉峰
맹강강%양광%동도%장검봉
多聚焦图像%小波变换%区域梯度
多聚焦圖像%小波變換%區域梯度
다취초도상%소파변환%구역제도
multifocus images%wavelet transform%regional grads
针对多聚焦图像因聚焦点不同而产生的图像模糊问题,提出了一种基于小波变换的新融合方法。该方法首先对图像进行小波分解,然后对图像的高频和低频系数分别采用区域梯度和能量加权平均法进行融合,再使用小波逆变换得到融合后图像。对实验结果进行主、客观评价的结果表明,该方法得到的融合图像具有较好的主观视觉效果和客观量化指标,效果优于传统融合方法。
針對多聚焦圖像因聚焦點不同而產生的圖像模糊問題,提齣瞭一種基于小波變換的新融閤方法。該方法首先對圖像進行小波分解,然後對圖像的高頻和低頻繫數分彆採用區域梯度和能量加權平均法進行融閤,再使用小波逆變換得到融閤後圖像。對實驗結果進行主、客觀評價的結果錶明,該方法得到的融閤圖像具有較好的主觀視覺效果和客觀量化指標,效果優于傳統融閤方法。
침대다취초도상인취초점불동이산생적도상모호문제,제출료일충기우소파변환적신융합방법。해방법수선대도상진행소파분해,연후대도상적고빈화저빈계수분별채용구역제도화능량가권평균법진행융합,재사용소파역변환득도융합후도상。대실험결과진행주、객관평개적결과표명,해방법득도적융합도상구유교호적주관시각효과화객관양화지표,효과우우전통융합방법。
A new approach to the fusion of multifocus images based on wavelet transform is proposed to solve the problem that some parts of the images are blurred because of the different focus points. The images are firstly decomposed by using wavelet transform, and then the low and high frequency coefficients are fused by using different fusion strategies:the low frequency coefficient is fused with a rule weighted average of energy, while the high frequency coefficient is processed with the regional grads. After that the fused image is obtained by inverse wavelet transform. Experiments prove that the fused image obtained by the method has a better subjective visual effect and objective evaluation criteria, thus attaining a better result than other traditional fusion methods.