Green output image from second Camera
Hi All. I have setup OpenCV 3.1.0 on my BeagleBone Black Rev C. All basic operations are working well. I have attached 3 cameras using USB hub to BBB. I have a simple OpenCV program that iterates...
View ArticleDeformable part model implementation
has anyone implemented DPM in opencv? I found one implementation: http://www.cnblogs.com/louyihang-loves-baiyan/p/4913164.html but that only detects the entire person, ie the root filter. I wanted to...
View Articlehow to change the value of one row descriptors into a single value
anyone can help me ex descriptors_object.row(1) :...
View ArticleCalculate the distortion of two nearly identical Contours with...
I have two files: 1. A .bmp file which shows a contour of an object made by AutoCAD 2. A image of the object made by a camera From both files I extracted the contour of the object with findContours()....
View ArticleGetting status of multiple objects.
I tried the tracker algorithms (MIL,BOOSTING,MEDIANFLOW,TLD and KCF) , apart from KCF the rest of the algorithms are very slow while tracking objects. Which is the best algorithm for tracking multiple...
View ArticleI've been trying to run principal component analysis code in opencv 3.1 with...
code: written in c++ following error is shown during ouput OpenCV Error: Assertion failed ((unsigned)(i1 * DataType<_Tp>::channels) < (unsigned)(size.p[1] * channels())) in cv::Mat::at, file...
View ArticleVideoCapture result in distorted lines in image
I am trying to click an image from Webcam using OpenCV. My code is as follows. VideoCapture cap0(0); cap0.set(CV_CAP_PROP_FRAME_WIDTH,320); cap0.set(CV_CAP_PROP_FRAME_HEIGHT,240); cap0 >> frame;...
View ArticleCalculate the distortion of two nearly identical Contours with...
I have two files: 1.A .bmp file which shows a contour of an object made by AutoCAD 2.A image of the object made by a camera From both files I extracted the contour of the object with findContours()....
View Articlereturn value of matchShape
Hey there, i tried to match two contours. In the documentation of OpenCV is an example which says the smaller the value the better the match is. But I in some positions I get smaller values although...
View ArticleHow to use opencv dft with Neon support from Qt on Raspberry Pi 3
Hi All. The problem is that my cv::dft function is running extremely slow on the raspberry pi 3, comparing when ran on a regular PC. I have a raspberry Pi 3 ( jessie ), with opencv 3.1.0 and Qt...
View Articleopencv/C++: Place a saved image over a webcam stream with facial recognition
I am trying to figure out how to place a saved image over a webcam stream in C++. The trick is that I want to place the image over a face and whenever the face moves, the image will move. I was able...
View ArticleCustom HOG not detecting features
I have an XML file with the contents of a trained SVM using HOG features from 14000 images in total, 9000 negative samples, and 5000 positive. I trained my SVM using OpenCV's Java extensions, but had...
View ArticleHi.. i'm new to opencv and trying shape detection. I have faced the following...
My program, int main() { //cv::Mat src = cv::imread("polygon.png"); cv::Mat src; cv::Mat gray; cv::Mat bw; cv::Mat dst; std::vector approx; std::vector> contours; VideoCapture capture(0); int q;...
View ArticleKalman Filter - Assertion failed - Matrix types
Hey, I try to build a kalman filter and get runtime errors at the step `Mat prediction = KF.predict(control);` in regards to the matrix types. I checked all the types of the input matrices and they...
View ArticleHow to Crop and save separately the bounded region?
 here is my processed Image. I want to crop the bounded region and save the cropped area. Specially I want to crop the the Numbers for Digit Recognition...
View ArticleAccess violation reading location - when I am trying to do a clone(). The...
When I am trying to make a clone on a matrix an exception is thrown randomly for clone and for flip too. These exceptions are from opencv_world300.dll.
