imread all files in directory
How would i modify this example to allow using a asterisk * as a argument so it would process all files instead of just the one argument....
View ArticleDecreasing the eigenvalue (road to success)
So i'm in the process of increasing face recognition by adding preprocessing (CLAHE, Tan-triggs, Equalizehist) and hoping that will give me better results. But looking at some posts here and there, the...
View Articleframeskipping
I wanted to use something like for(;;) { cap << frame; if (frameno % 3 == 0) frameNo++; { Do all our stuff } imshow Depending how high i set my frames to be skipped the face rectangle just...
View Articlealignment of face data needed for both train and probe?
If i align my dataset for training..do i need to align the faces i get from my webcam as well ? I don't think philip's example shows that although i might be wrong. I mean if we preprocess training...
View ArticleOpenCV Assertion Failed Error - Perspective Transform
Before posting this question I followed the answers posted in this thread but it didn't helped me however the question is eactly the same one....
View ArticleOpencv detect ellipse around text
I'm working on an OCR software for table detection using the Java version of Opencv. I'm able to detect almost all text borders of the images but i've problems with "circled" words/numbers. For text...
View ArticleVideoWriter to rtmp by gstreamer
Hei, I have to send opencv Mat frames to youtube channel. So i'm using rtmpsink that can accept only flv format (because there is no other alternative). I am thinking about the same scenario as...
View ArticleTriangulate Points from Stereo Image
Hello guys, I hope someone can help me with my problem :) **That's my approach** I have two cameras and now I want to calculate the 3D coordinates of an object. For this, I calibrate the cameras...
View Articleopencv2/ts.hpp file not found
Hi, after installing opencv 3.1 and opencv_contrib 3.1 I cannot compile test_fisheye.cpp, i get this error: opencv2/ts.hpp file not found How can i do?
View Articledistance measurement from camera to object?
I am working on a project to localize a robot, where in I need to determine the distance of the object from the camera. I've done a lot of research regarding this, but its a little out of my scope. I...
View ArticleFatal signal 11 (SIGSEGV) in Android 6.0
**What I do:** 1.I Write the face detection in opencv c++ and call from android using wrapper. 2.I used android native camera and pass image(Mat) to the detection method(detection method is shown...
View ArticleError building Opencv 2.4.13 for Android with CMAKE
Dear community, last week I tried to build OpenCV 2.4.13 for Android on a Windows 10 x64 machine and encountered a rather puzzling error. As basis for the build process I used the following articles:...
View ArticleAccessing the Value for each Pixel of an Output Array of phase()
I want to make an Matrix which holds the Orientation value of each pixel in a image. I need it for methods I want to use on the source image later on. The Code I have for this at the moment looks like...
View Articleimread flag for reading color image and equalizeHist output
So i took an image with photo booth, ordinary jpeg, but when loading it i get a assertion error that it needs to be CV_8UC1: OpenCV Error: Assertion failed (_src.type() == CV_8UC1) in equalizeHist,...
View ArticleOpencv 2.4.11 android source code
I'm doing some image stitching stuff on an android application and the results have been great! However, I want to make some of my own modifications to the C++ code and compile them into an .so file...
View ArticleSURF/SIFT Java wrapper for OpenCV 3.x/OSX 10.11
Sorry for my lame question, I'm still new to OpenCV. I'm trying to compile OpenCV 3.1 with SURF/SIFT support from the git master. It looks like there is no way I can access these algorithms from Java...
View Articlehow to get separate left sensor image and right sensor image using opencv
could you name a sequence which will capture video as the following does:luvcview -d /dev/video0 -f MJPG -S 1280x480 output> will the following does the trick:cap.set(CV_CAP_PROP_FOURCC...
View ArticleHow can i get function definition of opencv functions?
I am very new in opencv and still i am learning opencv. I downloaded opencv SDK with source code but i only found function declarations there. Is it possible to see the function definitions and if yes...
View ArticleI want to add opencv and gdal libarary in same project on netbeans, but there...
gdal libaray and opencv not added in same project
View ArticleHow to create multiple VideoCapture Obejcts
I wanted to create multiple VideoCapture Objects for stitching video from multiple cameras to a single video mashup. for example: I have path for three videos that I wanted to be read using Video...
View Article