基于局部邻域约束的空间验证方法

Spatial verification method based on local regional constraint

提出了用基于局部邻域约束的空间验证方法去验证错误的匹配特征。首先,计算匹配特征对的局部邻域范围,根据局部邻域内相关匹配特征对的数量定义该匹配对的局部邻域约束值,并判断是否满足局部邻域的约束条件。若满足,则基于局部邻域内的所有相关匹配特征的排列顺序,验证其是否满足一致的几何变换关系。实验结果表明:SVLRC方法具有较低的时间复杂度,改善了最终检索结果的精确度。

A Spatial Verification method based on Local Regional Constraints（SVLRC）is developed to remove false positive matches.First,the local region range of a center match pair is calculated.Then,the constraint value of the centre matches is defined according to the number of other matches in the local regions and whether the center match pairs satisfy the condition of local region constraint is judged.If the condition is met,whether all the matches in the local regions follow consistent geometric transformation is estimated based on geometric order.Extensive experiments demonstrate that the SVLRC can improve the retrieval accuracy significantly with low computation cost.