合肥工业大学学报(自然科学版)
閤肥工業大學學報(自然科學版)
합비공업대학학보(자연과학판)
JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE)
2015年
5期
618-621,693
,共5页
Harris特征点%Harris-Laplace算子%双边滤波%尺度空间%跟踪分组
Harris特徵點%Harris-Laplace算子%雙邊濾波%呎度空間%跟蹤分組
Harris특정점%Harris-Laplace산자%쌍변려파%척도공간%근종분조
Harris feature point%Harris-Laplace operator%bilateral filter%scale space%tracking group
经典的 Harris特征点检测和Harris‐Laplace特征点检测在传统的算法中占据重要的地位,但它们或在尺度或在冗余上仍存在问题,并且对弱的特征点不能很好地检测。为此,文章提出了一种改进的方法,在多尺度 Harris检测特征点时用改进的双边滤波来替代传统的高斯滤波,而且在检测时对特征点进行分组,一组代表同一局部结构,然后在各组中选取一个自相关矩阵特征值最接近的点来代表这一结构。实验表明此方法能较好地定位特征点位置和去冗余特征点。
經典的 Harris特徵點檢測和Harris‐Laplace特徵點檢測在傳統的算法中佔據重要的地位,但它們或在呎度或在冗餘上仍存在問題,併且對弱的特徵點不能很好地檢測。為此,文章提齣瞭一種改進的方法,在多呎度 Harris檢測特徵點時用改進的雙邊濾波來替代傳統的高斯濾波,而且在檢測時對特徵點進行分組,一組代錶同一跼部結構,然後在各組中選取一箇自相關矩陣特徵值最接近的點來代錶這一結構。實驗錶明此方法能較好地定位特徵點位置和去冗餘特徵點。
경전적 Harris특정점검측화Harris‐Laplace특정점검측재전통적산법중점거중요적지위,단타문혹재척도혹재용여상잉존재문제,병차대약적특정점불능흔호지검측。위차,문장제출료일충개진적방법,재다척도 Harris검측특정점시용개진적쌍변려파래체대전통적고사려파,이차재검측시대특정점진행분조,일조대표동일국부결구,연후재각조중선취일개자상관구진특정치최접근적점래대표저일결구。실험표명차방법능교호지정위특정점위치화거용여특정점。
Harris and Harris‐Laplace methods have the limitations of scales or redundant feature points ,and can not solve the weak feature points ,even though they have occupied an important posi‐tion in the traditional algorithm .In this paper ,an improved method of checking the feature points with multi‐scale Harris method using an improved bilateral filter to replace the Gauss filter is presen‐ted ,then the tracking and grouping is conducted w hile checking the feature points ,so some points re‐presenting the same local structure are divided into a group ,and a point w hich has the closest eigen‐values of the auto‐correlation matrix is selected from each group to represent its structure .The exper‐imental results show that the method can precisely detect feature points and remove redundant feature points .