Any opencv samples or application using opencl
Do we have any sample opencv applications which are using opencl for Android OS. Please give your inputs. Thanks Rama
View Article(Opencv 3.4.1)Reading video frame failed ,with error: Assertion failed...
I used same code and the same video and tested on the two environment.At first I tested on the "Opencv3.1.0 + windows(ubuntu) + VS2015",there is no error.But when I use the "opencv3.4.1+ MacOS +...
View ArticleOpenCV(3.4.1-dev) Error
When I tryed the sample code of EigenFaces and created the csv file, in the run time I got this error OpenCV(3.4.1-dev) Error: One of arguments' values is out of range (Bad new number of rows) in...
View ArticleStitching images with high resolution
I'm trying to stitch 2 images with resolution 3000x4000 using Stitcher class and it just crashes. I tried to use multiple parameters, sometimes it says insufficient memory and sometimes it just crashes...
View ArticleRendering or visualising 3D images
How do I get to visualize or 3D image in python. I have been able to create a pipeline to get point clouds from pair of stereo frames using openCV. I am writing them as PCD files after calculating...
View ArticleDetecting corners in webcam image
Hey everyone! Just curious about what the best route to solve this problem might be, as I’m new to OpenCV and am not familiar with all the functions quite yet. I have a webcam that takes a 1280x720...
View ArticleNonmatching transport in server reply” when cv2.VideoCapture rtsp onvif...
I'm on windows 10 using python 3.6.4, installed opencv (3.4) through pip. Here's the code I'm using: import numpy as np import cv2 cap = cv2.VideoCapture("rtsp://192.168.0.100:554/onvif1") while(True):...
View ArticleUsing OpenCV in MFC cause memory leak
I am using OpenCV into MFC project ... but I noticed something strange: if I only insert #include then I have a lot of memory leak: Detected memory leaks! Dumping objects -> {27112} normal block at...
View ArticleReact Native and opencv
Has anyone heard of this before? https://facebook.github.io/react-native/ I'm building an app that needs to do image recognition, then find an image match based on a small number of pre-set images....
View Article180,000+ Negative Images For You To Use In Object Detection Training
I have spent hours getting these pictures. They are Black & White and 100x100 pixels. These are good for training good detectors for abstract objects like a checkerboard, or maybe a specific logo....
View ArticleAruco Markers point position estimation
I need to detect and track an area of fixed size (let's say 1mt by 1mt). I am using 4 sets of 3 markers (each one for a different corner) so that by reading the marker Id I can know which corner it...
View ArticleOpenCV 3v: problem with trained models
Hello all, Situation : I use opencv 3, and train model with params > numStages 12 -minhitrate 0.999 -maxFalseAlarmRate 0.4 -numPos 50 -numNeg 320 -w 10 -h 10 -mode ALL -precalcBufSize 6000...
View ArticleNeed to multiply two Mat elementwise
I have two Mat of same size. A of type CV_8UC1 and B of type CV_64F I am trying to multiply A with B elementwise such that output should be of CV_8UC1 obtained by doing either a round of or simple...
View ArticleI am making dengue diagnosis app help me
I have 4 values in which 3 values are string type and 1 value is number how do i train these values in opencv. i want to compare these values with different set of values and generate the results.can...
View Articleaborted core dumped :NEG current samples: 7250 terminate called after...
During cascade classifier training I used 2500 positive samples and 8000 negative samples. But in 4th stage of training I got this error of " aborted core dumped " and "std: out of range". Please help...
View Articleerror LNK2019: unresolved external symbol "class cv::Mat __cdecl result(void)"
i am trying to make this code work, but i cannot solve that error Error 1 error LNK2019: unresolved external symbol "class cv::Mat __cdecl result(void)" (?result@@YA?AVMat@cv@@XZ) referenced in...
View ArticleDesigning single producer and multiple consumer( Threading)
Hello All, I am using opencv + qt to for my camera application. I have to perform two task 1. Capturing the frame and displaying it on GUI 2. Communicating with the serial port and storing the image....
View ArticleM parameter in logPolar() c++
Hello. I am writing code that implements phase correlation to find rotation, scale and translation, but I have a problem with rotation and scale estimation. After debugging, I noticed that the M...
View ArticleSuperpixel
i've this code where im applying the algorithm slic superpixel on a image. using android studio + opencv contrib .My problem is how can colorise evrey superpixel segments with random colors ' each...
View ArticleConfidence value of the multiclass SVM
Hi, As suggested [link text](http://answers.opencv.org/question/183721/regarding-multi-class-svm-and-superpixels/). I am using superpixels. I have trained the multi class SVM by using INTER kernel. I...
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