计算机与现代化
計算機與現代化
계산궤여현대화
COMPUTER AND MODERNIZATION
2015年
2期
52-56,61
,共6页
HOG特征%行人检测%梯度方向%直方图归一化%漏检率
HOG特徵%行人檢測%梯度方嚮%直方圖歸一化%漏檢率
HOG특정%행인검측%제도방향%직방도귀일화%루검솔
improved HOG feature%pedestrian detection%gradient direction%histogram normalization%lower miss rate
针对目前梯度方向直方图HOG作为描述符应用于行人检测时，会自动忽略梯度方向相反方向的差异，导致HOG的表达能力较弱等不足，本文提出基于改进HOG特征值的行人检测机制。在分析HOG描述符基础上，串联直方图，设计改进的HOG描述符；并提出一种新的归一化技术，嵌入改进的HOG描述符中，增强其表达能力。在多个数据库上的实验结果表明：与传统HOG特征方法相比，本文方法具有更高的准确率和更低的漏检率。
針對目前梯度方嚮直方圖HOG作為描述符應用于行人檢測時，會自動忽略梯度方嚮相反方嚮的差異，導緻HOG的錶達能力較弱等不足，本文提齣基于改進HOG特徵值的行人檢測機製。在分析HOG描述符基礎上，串聯直方圖，設計改進的HOG描述符；併提齣一種新的歸一化技術，嵌入改進的HOG描述符中，增彊其錶達能力。在多箇數據庫上的實驗結果錶明：與傳統HOG特徵方法相比，本文方法具有更高的準確率和更低的漏檢率。
침대목전제도방향직방도HOG작위묘술부응용우행인검측시，회자동홀략제도방향상반방향적차이，도치HOG적표체능력교약등불족，본문제출기우개진HOG특정치적행인검측궤제。재분석HOG묘술부기출상，천련직방도，설계개진적HOG묘술부；병제출일충신적귀일화기술，감입개진적HOG묘술부중，증강기표체능력。재다개수거고상적실험결과표명：여전통HOG특정방법상비，본문방법구유경고적준학솔화경저적루검솔。
The pedestrian detection mechanism was proposed for solving these defects such as weak expression ability of HOG re-duced by automatically ignoring differences in the opposite direction of its gradient direction when taking the current gradient di-rection histogram as descriptor for applying to pedestrian detection.Basing on analysis of the traditional HOG descriptor, the im-proved HOG descriptor was designed by connecting histograms;and a new normalization technique was proposed to embed into the improved HOG descriptor for enhancing its expression ability.The experiments results basing on several datasets show that:com-parison with traditional HOG feature method, this proposed mechanism had higher accuracy and lower miss rate.
