【作者】 王宇宙； 赵宗涛； 齐显峰；

【Author】 WANG Yuzhou~(1,2) ZHAO Zongtao~1 QI Xianfeng~2(~1Dept.of Computer Science,Northwest University,Xi’an,China P.R.,710069)(~2The Xi’an Institution of Information and Technology of Survey and Mapping,Xi’an,710054)

【机构】 西北大学计算机科学系； 西安测绘信息技术总站；

【摘要】 提出了一个基于局部仿射不变量特征的宽基线影像匹配算法。以特征点为定位点,使用分层变尺度窗口内的几何和亮度仿射不变量特征实现立体匹配。算法利用局部特征,因此具有较高的效率;在较大窗口范围内构造尺度、旋转不变特征,因而具有较高的匹配可靠性;将大窗口划分为较小的子区域,可以获得较好的匹配精度。更多还原

【Abstract】 A novel algorithm based on local affine invariants is proposed for searching correspondences between images inthe most general case.Image point features are used as anchor points and the local space-variant regions around the anchorpoint are used as local window region to generate geometric and color affine invariants for image matching.The method isefficient because only the local image features are used in the process.The matchmg results are reliable and robust because itsfeature matching region is relatively large,and the shape of local window region is transformed according to possibleprojective deformation.In addition,overlapped sub-regions are used in local feature extraction to reduce partially occludingproblems.更多还原