OpenCV 3中的FLANN错误 [英] FLANN error in OpenCV 3
问题描述
我正在运行Ubuntu 14.04.我正在尝试使用openCV 3运行FLANN,但出现错误.
I am running Ubuntu 14.04. I am trying to run FLANN with openCV 3 but I get an error.
所有波纹都通过使用AKAZE和ORB进行了尝试,但是代码是我尝试使用ORB的.
Everything bellow was tried by using AKAZE and ORB but the code if from my attempt to use ORB.
我使用ORB查找描述符和关键点.
I use ORB to find the descriptors and key-points.
Ptr<ORB> detector = ORB::create();
std::vector<KeyPoint> keypoints_1, keypoints_2;
Mat descriptors_1, descriptors_2;
detector->detectAndCompute( img_1, noArray(), keypoints_1, descriptors_1 );
detector->detectAndCompute( img_2, noArray(), keypoints_2, descriptors_2 );
使用ORB之后,我使用以下代码查找匹配项:
After I use ORB, I use the following code to find matches:
FlannBasedMatcher matcher;
std::vector<DMatch> matches;
matcher.match(descriptors_1, descriptors_2, matches);
代码构建良好,一切正常.当我运行代码时,出现此错误:
The code builds fine and everything. When I run the code I get this error:
OpenCV Error: Unsupported format or combination of formats (type=0
) in buildIndex_, file /home/jim/opencv/modules/flann/src/miniflann.cpp, line 315
terminate called after throwing an instance of 'cv::Exception'
what(): /home/jim/opencv/modules/flann/src/miniflann.cpp:315: error: (-210) type=0
in function buildIndex_
Aborted (core dumped)
有人可以告诉我为什么吗? OpenCV 3处于BETA状态是否有问题?是否有FLANN的替代品(BFMatcher除外)
Can anybody tell me why? Is it something with OpenCV 3 being in BETA state? Is there an alternative to FLANN (except BFMatcher)
推荐答案
所以我说的是
要使用FlannBasedMatcher
,您需要将描述符转换为CV_32F
:
in order to use FlannBasedMatcher
you need to convert your descriptors to CV_32F
:
if(descriptors_1.type()!=CV_32F) {
descriptors_1.convertTo(descriptors_1, CV_32F);
}
if(descriptors_2.type()!=CV_32F) {
descriptors_2.convertTo(descriptors_2, CV_32F);
}
您可以查看这个类似的问题:
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