Use cv::saliency::ObjectnessBING
Hi all, I am trying to use the [cv::saliency::ObjectnessBING](http://docs.opencv.org/master/db/d63/classcv_1_1saliency_1_1ObjectnessBING.html#ac7baaf45599b3293408c0ebc394a5c35) class to detect object...
View Articleerror cross compiling for ARM
I'm trying to cross compile opencv from source (git tag 3.0.0-rc1 or 2.4 branch, doesn't matter) on Ubuntu trusty (PC 64Bit). I always get errors at the very beginning, when the 3rd party stuff is...
View ArticleOpenCV OpenCL- Where is creation of context?
I'm using OpenCV OpenCL and I've been tracing the code that gets executed when OpenCL is on. I see the creation of a kernel, filling the kernel args and running the kernel, but I see no setup in terms...
View ArticleWeird behavior of ocl matrix in opencv
Hi, I am faciong a qweird problem. I have two matrix, input and output. For each element i in a row r in the input matrix, it sums all element before i in that row and put the sum in i th column and r...
View ArticleFace Recognition of a person not in the database
In Face Recognition, how do we detect a new person whose images are not in the database? The code I am using currently detects a new person with the closest match from the database.
View ArticleHow to get co-ordinates of a point in original image?
Hai, I am working with ear detection in frontal face with opencv and c++.I am taking ROI to detect ear point as shown bellow.  Yes i detected point...
View Articleear classifier for frontal face
Hi all, I need an ears detector from frontal face image. haarcascade_mcs_leftear.xml in openCV/data/haarcascade works only with profile image and not with frontal faces. Do you know how can I solve...
View ArticleHow should I choose the shape of the structuring element for a morphological...
I am working on a Python script to identify objects in an image and place each on a transparent background. My currently steps are 1. Open image 2. Apply bilateral filter to smooth textures 3. Use...
View ArticleCorner vector of findChessboardCorners output too large?
So I'm trying to calibrate a camera using the tutorial code in calib3d and [this](http://www.aishack.in/tutorials/calibrating-undistorting-with-opencv-in-c-oh-yeah/) tutorial. I keep getting the same...
View ArticlePut decoded base64 data into cv::Mat variable
How to decode base64 string and put it into Mat variable. Accually i can decode it using c++ but after that i don't know how to pass it to Mat. I tried searching but didn't find any clear pointed...
View ArticleOpenCV3.0 support for VS 2008
Hello. As in the topic, i would like to ask, wheather you support opencv 3.0 for Visual Studio 2008, because I am unable to compile it using CMake's. Configuration of CMakes goes well, but compilation...
View ArticleminMaxLoc crashed using opencl when location is needed
My program works well when setUseOpenCL is false. When setuseOpencl is true I have got problem when I want locatation of min and max. How can I solve it? int main(int argc, char **argv) {...
View ArticleHow does opencv's pose estimation estimate the scale factor?
Hi, in examples such as pose estimation of chessboard pattern, and the real time estimation of textured object in OpenCV, how accurate is the pose, and how is the scale computed to know the exact...
View Articleopencv 3.0alpha knnMatchSingle error
I use Stitcher class. stitch function to use an error occurs, In knnMatchSingle function caller_t func = callers [query.depth ()]; The value of func is output when you call the 0x00000000 value. The...
View ArticleSaving image back to sdcard after processing in Android+OpenCV
I want to save the image after processing it, into the same location in sdcard. Initially I converted the image into 'Mat' for processing and now if I'm writing it directly into the same location but...
View ArticleHow to detect circles in an image using java opencv?
need some sample codes......its urgent
View ArticleHow to remove shadow of image with help of open cv.?
I was tried many none of them help me out. Like :- cv::Mat grayMat; cv::cvtColor( cvMat, grayMat, CV_BGR2GRAY ); cv::GaussianBlur(grayMat, grayMat, cvSize(9,9), 0); cv::adaptiveThreshold(grayMat,...
View ArticleBuilding OpenCV_Contrib for Java
Hi, I am new to openCV and attempting to build jar files for Opencv_contrib modules. Have anyone succeeded doing that? Pls. share your experience. Thanks BP
View ArticleLive stream to OpenCV via IP camera?
Okay so ultimately I am trying to write an accurate multiple person counting program using OpenCV and Visual Studio 2010. I am quite an OpenCV and C++ newbie so please be quite specific in the...
View Articlewhy the captured image from code is not bright as normal captured image?
Hello, I am facing one problem regarding the capturing image from the USB camera. when I captured image without using coding i.e. directly from the camera than its give me bright image. but when i...
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