Is it possible to create distinct Histogram bins from array
Hi i'm currently trying to match a large set of values with a template array. I was looking to just display any of the values which perfectly matched the array in a frequency histogram. I've tried this...
View ArticleError compiling opencv 2.4.11 with mingw
Hi there, While compiling I get this error: [ 29%] Building CXX object modules/highgui/CMakeFiles/opencv_highgui.dir/src/window_w32.cpp.obj...
View ArticleShould I prefer functions that transform data instead of creating data?
I noticed in many functions from OpenCV library (C++ API) that there's a pattern regarding to the parameters passed to a function. I see that almost always there's a &src Mat and a &dst Mat...
View ArticleTrouble :detection and classification using SIFT+Bow+svm with emgu cv
Hello, I want to implement an algorithm of detection and classification using SIFT+Bow+svm with emgu cv . Firstly, when i use emgu cv 2.4.10 i don't find the BowKMeansTrainer and Bow Descriptor class,...
View ArticleContribute: Adding documentation to new class at 3.0
Hi! I'm trying to contribute with a new class to the OpenCV 3 but I'm stuck with the documentation. How can I add it? I can't find the .rst files (at 2.4 repo they were at opencv/modules//doc). Should...
View Articleopencv_traincascade line 152
Hi All, I am trying to make their own cascade classifier. Here's what I've done: 1)positive file opencv_createsamples.exe -img sample.png -vec sample.vec -num 1000 -bgcolor 255 -randinv -w 196 -h 106...
View ArticleBackground subtraction C# implementation
Using a Unity asset for OpenCV which in turn is based on OpenCV for Java. Background subtraction IS supported however no code samples so I am trying to get something working based on OpenCV Java...
View ArticleWhere can find the illustration for detectSingleScale function
Suppose there is image of 200x200, and the detecting window is 20x20, which is equal to trained sample. What is detecting procedure to detect the face in the image? the features are determinded by...
View ArticleMatching kmeans clusters generating non random sequence
I've been creating a bag of words based texture classifier using gaussian filterbanks. I've recently found a fairly fundamental flaw in that after i collect and save a set of 'model' histograms from...
View ArticleHow to use FaceRecognizer OpenCV 3.0
I want to use the OpenCV's FaceRecognizer module for Python in Ubuntu 14.04 but it keeps me saying: attributeError: 'module' object has no attribute 'createEigenFaceRecognizer' Why is that and how can...
View ArticleHow do I make HoG based Detection faster on openCV ?
I'm using HoG to detect people in real-time, but the detection takes too long and is discontinuous. I would like to fasten the process.
View ArticleWhat are the equivalent functions of cv::ocl in 3.0?
For whatever reason I cannot access some functions of cv::ocl, such as cv::ocl::convertfromimage. The compiler is telling me it is not a function of cv::ocl, and when I look at ocl.cpp it isn't there,...
View ArticleGetting real 3D points from disparity map
Hi, I need to get the real 3D points from the disparity map i got (after stereo calibrating and rectifying). I tried to use reprojectImageTo3D, but the coordinates i get don't make sense, even the...
View ArticleWhy the centroid i draw still having more than one instead of only the...
Hello, I'm doing the tutorial for the biggest contour detection by following the code from this program. [biggest contour...
View ArticleCentroid Sequence Calculation in an image with multiple blobs
I hv an image with different blobs location. To get the centroid I hv to run the moment algorithm to get the M00 and finally centroid. My question is, how the sequence of the centroid is calculated...
View Articlecan't find OpenCV 3 lib and bin files
Hi, I need to try out the newly added KAZE features so I'm trying to switch from opencv 2 to opencv 3, but I can't find the dll and lib files in the x64 directory as I did with opencv2. x64/vc12/bin...
View Articleproblem with opencv
Hello.. I working with ROS a few months, but I have a very important problem with opencv. I can use some of the opencv libraries without problem, but if I want to show a video in window or load a xml...
View ArticleAdding New Method in FaceRecognizer
I would like to list out the all the confidence values in facerecognizer algorithm, So i have tried to create the another predict method with new parameter. Source complied successfully, but I could...
View ArticleNode iterator missing first value when importing xml
I'm currently saving a large map of histogram data to xml for use in a later part of my program. I've noticed that it is cutting off the first value when loading and instead adding an empty value at...
View Articletext_object finder in video frames/ strange values of the scene_corners Mat
Hello, I'm working on text tracking in video and i'm using the javacv. Inspired by the original ObjectFinder class I developed a simple java class. All steps are implemented correctly except the last...
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