计算机与现代化
計算機與現代化
계산궤여현대화
COMPUTER AND MODERNIZATION
2015年
6期
55-58
,共4页
图像增强%夜间图像%对比度%自适应%交通场景
圖像增彊%夜間圖像%對比度%自適應%交通場景
도상증강%야간도상%대비도%자괄응%교통장경
image enhancement%night image%contrast%adaptive%traffic scene
为提高夜间图像的增强效果，针对具体的交通场景提出一种改进的图像增强算法。通过改进自适应对比度增强算法( ACE)中放大系数的自适应函数，算法能够有针对性地增强图像亮度较低和对比度较低的区域，防止图像过度增强，并且能够增强图像的细节，克服传统对比度增强算法的不足。实验结果表明，该算法增强效果显著，针对具体夜间交通场景图像处理速度快，自适应效果好，具有消除“振铃效应”、颜色保真和较好的保留并增强图像边缘和细节的能力。
為提高夜間圖像的增彊效果，針對具體的交通場景提齣一種改進的圖像增彊算法。通過改進自適應對比度增彊算法( ACE)中放大繫數的自適應函數，算法能夠有針對性地增彊圖像亮度較低和對比度較低的區域，防止圖像過度增彊，併且能夠增彊圖像的細節，剋服傳統對比度增彊算法的不足。實驗結果錶明，該算法增彊效果顯著，針對具體夜間交通場景圖像處理速度快，自適應效果好，具有消除“振鈴效應”、顏色保真和較好的保留併增彊圖像邊緣和細節的能力。
위제고야간도상적증강효과，침대구체적교통장경제출일충개진적도상증강산법。통과개진자괄응대비도증강산법( ACE)중방대계수적자괄응함수，산법능구유침대성지증강도상량도교저화대비도교저적구역，방지도상과도증강，병차능구증강도상적세절，극복전통대비도증강산법적불족。실험결과표명，해산법증강효과현저，침대구체야간교통장경도상처리속도쾌，자괄응효과호，구유소제“진령효응”、안색보진화교호적보류병증강도상변연화세절적능력。
In this paper, a night image enhancement method is proposed for intelligent traffic monitoring to improve visual effect of night image. By improving the adaptive function of the adaptive contrast enhancement ( ACE) algorithm in the amplification factor, the algorithm can specifically enhance low-brightness and low-contrast areas, to prevent excessive image enhancement, and can enhance the details of images, overcoming the shortcomings of traditional contrast enhancement algorithms. Experimental results show that the algorithm enhancement effects are significant, it is of a fast speed while processing nighttime traffic scene im-age, good adaptive effect with the capacity of weakening “ringing effects”, color fidelity and better retaining and enhancing the image edges and details.
