计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
17期
182-187
,共6页
车牌定位%HSL颜色空间%几何特征%纹理特征%快速鲁棒特征(SURF)算法
車牌定位%HSL顏色空間%幾何特徵%紋理特徵%快速魯棒特徵(SURF)算法
차패정위%HSL안색공간%궤하특정%문리특정%쾌속로봉특정(SURF)산법
license plate location%HSL color space%geometric characteristics%textural feature%Speeded Up Robust Feature (SURF)algorithm
针对利用SIFT算法进行车牌精确定位时执行时间较长的问题，提出一种基于多重特征和SURF算法的车牌定位算法。在HSL颜色空间得到车牌候选区域，结合车牌几何特征与纹理特征筛选候选区域并按设定的规则标号；按序提取车牌标号候选区域，并用SURF算法对候选区域精确定位。实验结果表明，SURF算法与SIFT算法相比，在定位准确率相同情况下减少了运行时间，能满足实时性需要。
針對利用SIFT算法進行車牌精確定位時執行時間較長的問題，提齣一種基于多重特徵和SURF算法的車牌定位算法。在HSL顏色空間得到車牌候選區域，結閤車牌幾何特徵與紋理特徵篩選候選區域併按設定的規則標號；按序提取車牌標號候選區域，併用SURF算法對候選區域精確定位。實驗結果錶明，SURF算法與SIFT算法相比，在定位準確率相同情況下減少瞭運行時間，能滿足實時性需要。
침대이용SIFT산법진행차패정학정위시집행시간교장적문제，제출일충기우다중특정화SURF산법적차패정위산법。재HSL안색공간득도차패후선구역，결합차패궤하특정여문리특정사선후선구역병안설정적규칙표호；안서제취차패표호후선구역，병용SURF산법대후선구역정학정위。실험결과표명，SURF산법여SIFT산법상비，재정위준학솔상동정황하감소료운행시간，능만족실시성수요。
In order to overcome the problem of slow execution in using SURF algorithm to locate license plate accurately, a novel car license plate location algorithm based on multiple features and SURF algorithm is proposed. The algorithm roughs the candidate region through HSL color space and uses geometric characteristics and textural feature to filter the candidate region and marks the candidate region by the set rules. Then it extracts the label candidate region in order and uses SURF algorithm to locate the plate precisely in this region. The experimental results show that the SURF algorithm has better effect compared with SIFT algorithm in the execute time, and it can meet the needs of the real time.
