计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
10期
186-190
,共5页
唐美玲%张小刚%陈华%汤红忠
唐美玲%張小剛%陳華%湯紅忠
당미령%장소강%진화%탕홍충
去雾%中值滤波%自适应%图像融合
去霧%中值濾波%自適應%圖像融閤
거무%중치려파%자괄응%도상융합
dehazing%median filter%self-adaptive%image fusion
在雾、霾气候下所捕获到的照片质量因大气衰减而有所降低。为有效恢复场景实际色度,提高图像的视觉效果,提出了一种基于中值滤波去雾的改进算法。首先根据输入图像的一维熵以及平均灰度的特点,自适应调节大气光成分值使得去雾后图像的亮度达到最优;为调和去雾后图像的色度,引进了图像融合的方法,并且根据大气光成分值的选取特点设置了融合比例,从而实现了去雾系统的整体最优化。实验结果表明,算法去雾后图像具有较好的视觉效果,其色度、亮度、对比度都有了一定程度的提高。
在霧、霾氣候下所捕穫到的照片質量因大氣衰減而有所降低。為有效恢複場景實際色度,提高圖像的視覺效果,提齣瞭一種基于中值濾波去霧的改進算法。首先根據輸入圖像的一維熵以及平均灰度的特點,自適應調節大氣光成分值使得去霧後圖像的亮度達到最優;為調和去霧後圖像的色度,引進瞭圖像融閤的方法,併且根據大氣光成分值的選取特點設置瞭融閤比例,從而實現瞭去霧繫統的整體最優化。實驗結果錶明,算法去霧後圖像具有較好的視覺效果,其色度、亮度、對比度都有瞭一定程度的提高。
재무、매기후하소포획도적조편질량인대기쇠감이유소강저。위유효회복장경실제색도,제고도상적시각효과,제출료일충기우중치려파거무적개진산법。수선근거수입도상적일유적이급평균회도적특점,자괄응조절대기광성분치사득거무후도상적량도체도최우;위조화거무후도상적색도,인진료도상융합적방법,병차근거대기광성분치적선취특점설치료융합비례,종이실현료거무계통적정체최우화。실험결과표명,산법거무후도상구유교호적시각효과,기색도、량도、대비도도유료일정정도적제고。
In the haze and fog climatic condition, the quality of the captured pictures will be reduced for the reason of atmospheric attenuation. An improved method based on median filter is proposed to recover the chroma of scene and improve the visual effect. Firstly, according to the characteristics of the one-dimension entropy and average gray value of input image, self-adaptively regulating of the global atmospheric light can achieve the optimal brightness of haze-free image. Furthermore, to reconcile the haze-free image chroma, the image fusion method is introduced into this paper, and the whole optimization of dehazing system is realized based on the fusion parameter proportion set by the value of global atmospheric light. Experi-mental results show that the dehazed images with the proposed method have better visual effect. The chroma, brightness and constrast have been improved.