perspective transformation with given camera pose
Hi everyone! I'm trying to create a program, that I will use to perform some tests. In this program an 2D image is being displayed in 3D space in the cv:viz window, so user can change camera (viewer)...
View Articleopencv 3.0.0 Installation instructions for bloodshed Dev CPP
Hello, I want to install opencv 3.0.0 on top of bloodshed Dev CPP. Please guide me - Where could I find an updated instructions for this? Regards, Elad
View ArticleWhat is the difference between the 3.0.0 headers for Windows/All Platforms?
I downloaded the [windows binary package](https://sourceforge.net/projects/opencvlibrary/files/opencv-win/3.0.0/) and the [source package for all...
View Articlehow to detect eyes and face
hi , i wanna detect face and eyes in the same time from a video using opencv for android application.i tried to modify the sample face detection of the opencv2.4.2 api so i tried to load at first the...
View ArticleIs Haar Cascade Classification can be considered as Neural Network?
The cascade classifier consists of stages, where each stage is an ensemble of weak learners. The weak learners are simple classifiers called decision stumps. Each stage is trained using a technique...
View ArticleFeed "imshow" output into a .net application
Hi guys, Sorry if this is not OpenCV related though. I'm wondering if the window which outputs the video via "imshow" in OpenCV can be "borrowed" to be displayed into a .net PictureBox or something?...
View ArticleHow to use BOWImgDescriptorExtractor in python - openCV ?
Hi, I am a beginner to openCV and am trying to use python-openCV. I have version 2.4.10. In this I am trying to use the BOWImgDescriptorExtractor as follows : extractor =...
View Articleopencv manager wasn't initialized correctly on galaxy s6!
Hello All, I developed an image processing app,when I installed it on my galaxy s6 it wants Opencv Manager I download it from Google play but when I open the app this error appear and app close...
View Articlecannot use opencv3 with python2 in windows7. cv2.pyd is strange.
python2.7.9 on win 32. numpy,matplotlib. ##cmake. 1.configure the sorce file.checked visual studio 2013(visual studio12). 2.get the red screen and input OPENCV_EXTRA_MODULES_PATH to...
View ArticleI couldnĀ“t open videos with Python + OpenCV
I try to open videos but I couldn't. I use this code and I try to open viedos MP4 and AVI. I don't know why but if I print the value of cap.isOpened() the returned value is FALSE. import numpy as np...
View ArticleUsing DescriptorMatcher for generic features
Hi, I'm wondering if I can use (and how?) the DescriptorMatcher class to classify other data than keypoints. More precisely I would like to use them for texture classification. I have `N` texture...
View ArticleCount drops of blood
Hi, I need to develop a java program openCV to run on Android. The program will capture an image of a skin and make the score drops of blood that is enclosed within a square of 2.5 cm. I'm currently...
View ArticleHow can I use the GPU with Qt? (non-nvidia)
Hello everyone, this is my first time with OpenCV. I am sorry I couldn't formulate my question better, I have been searching the Internet and the tags on OpenCV Answers but I couldn't solve my problem....
View Articleprotobuf opencv_contrib
Dears, I'm trying to compile opencv_contrib and I am getting errors as follows [ 54%] Building CXX object...
View ArticleIn Opencv_traincascade I am getting the FA as always 1 and my program closes...
 The program stops with an error that opencv stopped working!!
View ArticleSuper Resolution on Java
Hi everyone, Firstly, I am newbie in this area. I want to get frame from camera and run Super Resolution on Java using this frames. But i could not find any example on web when i searched. Thank you...
View ArticleCreate features index (image database) and search (Python)
I have almost 3 million images of different objects. Now I'd like to build an index (database), storing the features of each image (SIFT or SURF). Using this index and a single image, I'd like to find...
View ArticleIs particle filter implemented in opencv 3 ? if yes , is there any example .
I am searching for Particle filter , all that i found is in Matlab , but i want to use it in opencv 3.
View Articleextract index of flann in java
Hello, I develop with Java and OpenCV 2.4.11 and want to save the created index of flann. Is there a way? Maybe with a external yml with parameters? thank you
View ArticleScaling a grayscale image in OpenCV (C++)
Hello, I'm still pretty new to programming, so I've come to ask for help. I need to scale a grayscale image using C++, but I'm not sure where to start. I have the input of a grayscale image, one...
View Article