cv::BFMatcher::knnMatchImpl

cv::BFMatcher::knnMatchImpl是BFMatcher类的一个成员函数，用于实现k最近邻算法的匹配。该函数接受一个查询描述符的输入数组queryDescriptors和一个输出的DMatch结果的二维向量matches。参数k指定在字典中找到k个最佳匹配。此外，还可以通过参数masks和compactResult来指定是否使用掩码和是否压缩结果。\[1\]\[3\]
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