rotating image with WarpAffine crashes sometimes
Hi, I am experiencing a random crash with WarpAffine when rotating images using OpenCV 3.1. The image dimension is 4928 x 3264. Sometimes rotating works and other times rotating the same image by the...
View ArticleDisplay a rectified video (stereo camera)
Hi all, I have a streo camera, I calibrited it and I rectified the images also. Now, I want to display the video (online) with the corrections of calibration and rectification. How can I do this ?...
View ArticleHow to you OpenCV draw functions on the GPU?
I want to draw a bezier curve ( which is piece-wise drawn through a set of points ) on an empty canvas using OpenCV and Python. I then want to get the resultant image in matrix form. To do this I used...
View ArticleEigenfaces - What are the 400 pictures used for?
Hello, I've been looking into Eigenfaces and I'm trying to understand what the 400 training images are used for in the process of detecting your face. I thought that you just have a set of images of...
View Articlehow should I use the function orb.detectAndCompute() correctly
import cv2 as cv imgpath='testImg.jpg' img=cv.imread(imgpath,cv.IMREAD_GRAYSCALE) orb=cv.ORB_create() keypoints,descriptor=orb.detectAndCompute(img,None)> error: (-215) The data should> normally...
View ArticleWhat is the cv2.stereoCalibrate: "imageSize" variable format? [Python]
What is the cv2.stereoCalibrate: "imageSize" variable format? I've tried numpy arrays, defining the variable plainly, pixel count (720 x 1280 x 3), etc. but I'm still getting the below error. I can't...
View ArticleMissing files in OpenCV 2.4.8
Hi all, Thanks to those people who pointed out where I could find an old version of 2.4.8 Unfortunately all these seem to be missing the following files: - opencv_core248.dll - opencv_highgui248.dll -...
View ArticleOpencv mask object from rtsp camera
i want to add an image as mask in camera live frame after detect specific logo . if possible Output rtmp://127.0.0.1:1935/live/mycamOutput ,, I have nginx-rtmp the rtmp can work if we add it in source...
View Articleremap of remap is not equal to remap
I have two successive remap calls and I'm trying to merge them: for (int j = 0; j < h; j++) for (int i = 0; i < w; i++) { float x, y; x = mapx2.at(j, i); y = mapy2.at(j, i); x = RANGE(x, 0, w -...
View Articlehttp://www.supplements4us.com/derma-vibrance/
be taken by pregnant or lactating women or those who are taking certain medications.Derma Vibrance Don't use skin care products that contain fragrances. They can aggravate your skin, disturb your...
View ArticleFeatures2D return TRUE if 2 Mat are matches
Hello, I'm newbie in CV programming. Based on tutorial in [Features2D](http://docs.opencv.org/2.4/doc/user_guide/ug_features2d.html) I found that the detection of two images is not difficult. But the...
View ArticleCMake Error. how can I solve.
CMake Warning (dev) in C:/OpenCV2.2/OpenCVConfig.cmake: Syntax Warning in cmake code at C:/OpenCV2.2/OpenCVConfig.cmake:87:40 Argument not separated from preceding token by whitespace. Call Stack...
View ArticleHow to build opencv 2.4.13 without gstreamer?
I need to build opencv 2.4.13 without gstreamer support because I failed to install some 3rd-party libraries under CentOS 7. How I can do it?
View ArticleAssertion failed.How can I solve
I used OpenCV2.4.13 and I got OpenCV Error: Assertion failed (dims <= 2 && data && (unsigned)i0 < (unsigned)size.p[0] && (unsigned)(i1DataType<_Tp>::channels) <...
View Articlematrices as function arguments
I'm dealing with c and cpp files in my project. I've some data in matrix form in .cpp file now and I want to use this matrix data in .c file. As .c files don't use matrices but only .cpp files use......
View ArticleProgram crashes giving unhelpful exit codes
I'm building a face and eye detecting program using OpenCV 3.1 using Visual Studio 2015. I've changed the sample code provided to suit my purposes. The function definition is given below. void...
View ArticleHow to remove green color i.e. to set it to 0 in an image?
I am having an image and wish to remove the green color in it i.e. to set it to value 0. How to do that?
View ArticlePR Curve for Cascade w/ detectMultiScale3: Never Completes
Hello, I have a custom trained cascade and using detectMultiScale I am able to sweep over my test set (128 images) for the best performing scale and neighborhood parameters in a minute or two. I am...
View Articleinstall tesseract on window visual studio 2013
Plase help me how to intall tesseract on visual studio 2013
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