I am trying a code from tutorial to test the marker-less AR experience with OpenCV + OpenGL. But the problem is that when I compiled the code I found out that there is an error with the following segment of code:
cv::Ptr<cv::DescriptorExtractor> extractor = cv::FREAK(false, false),
and the error is:
FREAK is not a member of cv.
So, can someone tell me why is that happening? I have tried to search for a solution and tried to solve as much as I can but every time I got error.
Related
I've been working with raster data and the code has been working fine. Unexpectedly when reprojecting with:
reproject()
I get
"Error in wkt(projfrom) :could not find function "wkt".
I'm using... CRS arguments:
+proj=utm +zone=5 +datum=WGS84 +units=m +no_defs
I have also tried projectRaster() and get a similar error
Might be an issue with the rgdal package? Anyone else getting this? thank you!
This problem should go away if you update the sp package
I am using spdlog, opengl, glad, and glfw in my project. No matter what error I am receiving, it is ALWAYS preceded by the 4 same errors. For example, let's say I have the following code:
std::cout << "sup";
then it will run perfectly. Okay now, let's say I have a typo and I do this:
std:cout<< "sup";
I get the following errors:
Here are the first 2 errors.. they redirect to FMT core.h file
and then the last two redirect to FMT format.h
Does anyone know why this could be happening? it is not made or break, whenever I have an error and I fix it these go away but it's just annoying and I would like to understand why.
It looks as though this PR will fix your issue?
https://github.com/fmtlib/fmt/pull/1279
Maybe just update fmt to the latest version?
I am trying to run the letter_recog.cpp example with the 64-bit OpenCV 3. But during the process, it report the debug: Expression: vector subscript out of range.
When I step into the OpenCV source code to find out what is wrong, and it stops at the line of the memcpy(&subsets[split.subsetOfs], &w->wsubsets[wsplit.subsetOfs], ssize*sizeof(int));.
It is one line of the function int DTreesImpl::addTree(const vector& sidx ).
In the letter_recog.cpp example, I choose the build_rtrees_classifier. The train data after the prepare_train_data(data, responses, ntrain_samples) is
And the debug error happens in the function of model = StatModel::train(tdata, RTrees::Params(10,10,0,false,15,Mat(),true,4,TC(100,0.01f)));
Can anyone tell me what is wrong? Or how can I run the `letter_recog.cpp example successfully? Because I do not have enough reputation points, I can not post image.
Thanks a lot!`
I am using CPN Tools to model a distributed system. CPN Tools uses CPN ML an extension of SML. The project homepage is: cpntools.org
I started with a simple model and when I try to make a particular indexed color set timed, I get an "Internal error". There is another indexed colorset within my Petri-net model that is timed and works correctly. I am not sure how I can troubleshoot since I don't understand the error message. Could you help me interpret the error message or give me some hints on what I could be doing wrong?
The model is:
http://imgur.com/JUjPRHK
The declarations of the model are:
http://imgur.com/DvvpyvH
The error message is:
Internal error: Compile error when generating code. Caught error.../compiler/TopLevel/interact/evalloop.sml:296.17-296.20../compiler/TopLevel/interact/evalloop.sml:44.55../compiler/TopLevel/interact/evalloop.sml:66.19-66.27
structure CPN`TransitionID1413873858 = struct ... end (* see simulator debug info for full code *)
simglue.sml:884.12-884.43
"
Thank you~
I know this is an old question, but I run in the same problem and wasted too much time on this, so maybe it will help someone else in the future.
I didn't understand exactly the reason for this, but it seems the problem appears when you play with time values on an arch that ends to a transition (I was updating an integer value to the current time, using IntInf.toInt(time())). Now, if I move the code on the outgoing arch of that transition (that is: the one that ends in a place) there is no error.
sorry for my english..
i'm new to opencv, and i want to try samples square.cpp,i used codeblocks on ubuntu.
but i got error when i compiled and run it, it said that (on Xterm):
opencv error : bad argument (bad image header) in cvCloneImage file build/buildd/opencv-2.1.0/src/cxcore/cxarray.cpp, line 3122
so, my question is, how to fix it?
thanks.
It may contain some code which is using some input images. The important thing is that those input images might not be null.
This error comes in cxarray.cpp where we have the code like if (!CV_IS_IMAGE_HDR(src)). Now if you check for the definition of this
#define CV_IS_IMAGE_HDR
You will get it as:
((img) != NULL && ((const IplImage*)(img))->nSize == sizeof(IplImage))
The first thing it checks is for null image. So in your case you might not have the input image with you.
Select a input image you have and then try again. It will work, as it have worked for me.