一种基于QC距离的形状匹配方法
A QC-Distance Based Shape Matching Approach
-
摘要: 形状上下文特征描述是图像描述的一种，形状特征向量的提取和相似度量方法至关重要.提出了一种基于QC距离的形状匹配方法，首先计算所有形状轮廓点间径向和角度的相对位置关系，得到形状的特征描述分布，然后利用QC距离来度量特征分布间的相似度，最终实现形状匹配.在手写数字公测数据集MNIST上的实验结果表明，引入QC距离度量有效地提高了匹配的准确率.Abstract: Shape context is a classical approach of image description. Constructing the shape feature vectors and the distance measurement method between two vectors are both important. This paper has presented a QC-distance based shape matching approach. Firstly, the relative positional relationship has been calculated between the radial and angular shape contour points, which give shape feature distribution. Secondly, QC is used to measure the distance between two shape feature distributions. Finally, the shape matching has been found through optimization method. Experimental results on handwritten Handwritten Digital Library MINST show that employing the QC-distance for shape matching can offer better performance.
-
Key words:
- shape matching /
- QC-distance /
- distance measurement /
- shape representation .
-
-
[1] 周瑜,刘俊涛,白翔.形状匹配方法研究与展望[J].自动化学报,2012,38(6):889-910. [2] 鲍振华,康宝生,张雷, 等.基于草图局部几何不变矩的图像检索方法[J].计算机应用,2017,37(6):1753-1758. [3] 蔡慧英,朱枫.仿射变换下基于凸包和多尺度积分特征的形状匹配方法[J].计算机辅助设计与图形学学报,2017,29(2):269-278. [4] 赵珊,王彪,唐超颖.基于链码表示的手臂静脉特征提取与匹配[J].光学学报,2016, 36(5):131-142. [5] BELONGIE S J,MALIK J,PUZICHA J.Shape Matching and Object Recognition Using Shape Contexts[J].Transactions on Pattem Analysis and Machine Inteligence, 2010, 24(4):509-522. [6] 张桂梅,蔡报丰.基于内距离形状上下文特征的形状匹配研究[J].南昌航空大学学报(自然科学版),2016,30(2):1-7. [7] ZHU L,ZHU C Q.Application of Hausdorff Distance in Image Matching[C]. Ottawa:Electronics,Computer and Applications,2014. [8] 张桂梅,孙晓旭,章毅.基于小波变换的局部形状匹配[J].计算机工程与应用,2017,53(2):188-194. [9] 陈睿.一种新型的基于形状空间投影的形状匹配方法[J].西南大学学报(自然科学版),2016,38(8):134-141. [10] 罗萱.基于边缘方向和梯度的图像特征匹配算法[J].西南师范大学学报(自然科学版),2014, 39(1):61-67. -
计量
- 文章访问数: 714
- HTML全文浏览数: 576
- PDF下载数: 59
- 施引文献: 0
下载: