I applied RANSAC and successfully segment out the required part from the scene.
The problem is when for a long time the required part is not present infront of the camera it crashes out after throwing an exception.
How I could possibly deals with this exception in the best way as even the object is not found in the scene it keeps looking for it ?
[pcl::SampleConsensusModel::getSamples] Can not select 0 unique points out of 0!
[pcl::RandomSampleConsensus::computeModel] No samples could be selected!
[pcl::SACSegmentation::segment] Error segmenting the model! No solution found.
Could not find any points that fitted the model.
[pcl::KdTreeFLANN::setInputCloud] Cannot create a KDTree with an empty input cloud!
terminate called after throwing an instance of 'pcl::IOException'
what(): : [pcl::PCDWriter::writeASCII] Input point cloud has no data!
Aborted (core dumped)
Check the size of the cloud before calling the write function.
if(cloud->size() > 0)
Related
The question is related to the OpenCV library, version 2.4.13.2.
I am using n dimensional feature vectors from images for training and performing regression. The output values range between 0 and 255.
The function CvSVM::train works without an error, but requires a manual setting of parameters. So, I would prefer using the function CvSVM::train_auto to perform cross validation and determine the best parameters for the situation.
But I am facing the error:
OpenCV Error: Assertion failed (sv_count != 0) in CvSVM::do_train.
On changing the type to NU_SVR, it works well. The problem is only with type EPS_SVR.
I would appreciate any help I could receive to fix this.
EDIT: I was able to pinpoint the problem to line Number 1786 in the file-
opencv-master\sources\modules\ml\src\svm.cpp
FOR_IN_GRID(p, p_grid)
Upon commenting it, the code runs without errors. I am unaware of the reasons possible.
Facing the same bug. Found out that this bug was caused by svm.setP(x) and svm.setTermCriteria((cv2.TERM_CRITERIA_EPS, y)) where x and y values more than 0.1 (10^-1).
When I am trying to run corpus pipeline on language resources. It is throwing the below (even though I follow the order as Document reset, english tokeniser, sentence splitter)
Can someone help me with the process to debug this run-time error
Error:
gate.creole.ExecutionException: No sentences or tokens to process in document Password_Safe-window1.txt_0003E
Please run a sentence splitter and tokeniser first!
at gate.creole.POSTagger.execute(POSTagger.java:257)
at gate.util.Benchmark.executeWithBenchmarking(Benchmark.java:291)
at gate.creole.SerialController.runComponent(SerialController.java:225)
at gate.creole.SerialController.executeImpl(SerialController.java:157)
at gate.creole.SerialAnalyserController.executeImpl(SerialAnalyserController.java:223)
at gate.creole.SerialAnalyserController.execute(SerialAnalyserController.java:126)
at gate.util.Benchmark.executeWithBenchmarking(Benchmark.java:291)
at gate.gui.SerialControllerEditor$RunAction$1.run(SerialControllerEditor.java:1759)
at java.lang.Thread.run(Thread.java:745)
Edit:
The files are not empty. As i tried to implement #dedek's suggestion, it has thrown no errors. But raised one more problem as follows:
Exception in thread "ApplicationViewer1" java.lang.OutOfMemoryError: Java heap space
I think it is because your document is empty.
Can you confirm that?
There is a run-time param failOnMissingInputAnnotations of the POSTagger, set it to false and it should be ok.
See also the docs:
failOnMissingInputAnnotations - if set to false, the PR will not fail with an ExecutionException if no input Annotations are found and instead only log a single warning message per session and a debug message per document that has no input annotations (run-time, default = true).
Concerning the OutOfMemoryError: Java heap space
See following questions:
Getting OOM while using GATE on large data set
GATE PersistenceManager.loadObjectFromFile outofmemory error while loading .gapp files
JAVA PermGem memory
I'm writing a pattern matching code using OpenCV with CUDA on Mac OS X. After ~ 70 frames, it slows down a lot. Using mach_absolute_time() I've been able to track the culprit (Initially I thought it was a disk access issue):
gpu::matchTemplate(currentFrame,
correlationTargets[i]->correlationImage,
temporaryImage,
CV_TM_CCOEFF_NORMED);
I believe this is caused by some memory issue inside matchTemplate. After a lot of search, I found the matchTemplateBuf structure which is presumably for memory reuse. Since the problem seems memory releated, I think using this may be the solution. However, the following code crashes:
gpu::MatchTemplateBuf mtBuff;
[...]
for(...) {
gpu::matchTemplate(correlationTargets[i]->croppedImage,
correlationTargets[i]->correlationImage,
correlationTargets[i]->maxAllocation,
CV_TM_CCOEFF_NORMED, mtBuff);
With error:
OpenCV Error: Gpu API call (Unknown error code [Code = 9999]) in convolve, file /Users/sermarc/Downloads/opencv-2.4-3.8/modules/gpu/src/imgproc.cpp, line 1431 libc++abi.dylib: terminating with uncaught exception of type cv::Exception: /Users/sermarc/Downloads/opencv-2.4-3.8/modules/gpu/src/imgproc.cpp:1431: error: (-217) Unknown error code [Code = 9999] in function convolve
I believe this is because the matchTemplateBuff is not properly initialized. However, I cannot find any information or example that shows it being set on a valid state.
The code works with:
gpu::matchTemplate(correlationTargets[i]->croppedImage,
correlationTargets[i]->correlationImage,
correlationTargets[i]->maxAllocation,
CV_TM_CCOEFF_NORMED);
Error is at the bottom with the output.
Output:
Welcome to my Scramble Word Game!
a) Add Words into game database
b) Remove words
c) configure count down time
d) Start game
e) Select Game level
f) View score chart
g) Quit
Please enter an alphabet to select: d
Game Started
terminate called after throwing an instance of 'std::out_of_range'
what(): vector::_M_range_check
apple orange melon lemondinosaur
RUN FINISHED; Aborted; real time: 1s; user: 0ms; system: 0ms
below the code is my output , whats wrong with my code can anyone help me thanks ,
Any help will be appreciated!
Cheers!
levelList.at(rand()% wordList.size());
This is likely to be out of range some of the time, since wordList is likely to be larger than levelList.
Presumably, you meant
levelList.at(rand()% levelList.size());
^^^^^^^^^
You are also not initialising the level variable declared in startGame, so it's likely that levelList will be completely empty. Presumably, you want to use the function argument to specify the level instead.
If you word file contains any words which are less than two characters, levelList will be shorter than wordList, so this line
levelList.at(rand()% wordList.size());
will cause the problem you state.
You do not explicitly assign a value to your variable 'level' which is set to 0. Your switch statement does not cover this case, so your levelList is empty. You then try to access an entry in your zero-length level list which causes the out-of-range message.
I'm trying to get the background image from BackgroundSubtractorMOG2:
bg->getBackgroundImage(back);
but I get a Thread 1 SIGABRT (which as a c++ n00b puzzles me)
and this error:
OpenCV Error: Assertion failed (nchannels == 3) in getBackgroundImage, file /Users/hm/Downloads/OpenCV-2.4.4/modules/video/src/bgfg_gaussmix2.cpp, line 579
libc++abi.dylib: terminate called throwing an exception
(lldb)
I'm not sure what the problem is, suspecting it's something to do with the nmixtures paramater, but I've left that as the default(3). Any hints ?
It looks like you need to use 3 channel images rather than grayscale. Make sure the image type you are using is CV_8UC3 or if you are reading from a file use cv::imread('path/to/file') with no additional arguments.