Is it a bug? After imread cv crashes in mat.inl.hpp
When I try to open non existing file using imread it will crash Unhandled exception at 0x00411c78 in ...exe ... 0xC00000 5 Access violation writing at location 0x00419257 mat.inl.hpp on line #681...
View ArticleCalculate affine transformation matrix
I want to build a function that can estimate geometric transform i.e calculate the transformation matrix required to convert first image into second image. So my second image is obtained in two steps,...
View ArticleI have to find the homography that best warps the images into the same...
I have used RANSAC algorithm to find the homography and wrap perspective operation to apply it to an image. here is the code MIN_MATCH_COUNT = 10 img1 = cv2.imread('bus1.jpg',0) img2 =...
View Articleerror LNK2019: unresolved external symbol "class cv::Mat __cdecl result(void)"
i am trying to make this code work, but i cannot solve that error Error 1 error LNK2019: unresolved external symbol "class cv::Mat __cdecl result(void)" (?result@@YA?AVMat@cv@@XZ) referenced in...
View ArticleBilateral filter error, Assertion failed ((src.type() == CV_8UC1 ||...
My code is shown in the following: Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.image1); int width = b.getWidth(); int height = b.getHeight(); Mat tmp = new Mat (width, height,...
View ArticleCompute stereo remapped points without applying cv::remap to whole image.
I can compute the same feature's coordinate in left and right stereo image ,please suggest a faster way to compute these points in location in stereo calibrated image without applying cv::remap to...
View ArticleHow to evaluate light linearity and additivity with a camera
Hi, lastly I am questioning the linearity and additivity of light propagation in images. As the title says I would like to see what is the contribution of light to image pixel intensity values and if...
View ArticleSurf and FlannIndex to find image in images database
Hi there, I'm new to opencv and using EMGU as wrapper in C#. I'm trying to get the best similar image for a query image from images database. I followed up the example as show...
View ArticleCreating custom kernels
I want to create custom filters using filter2d function but most of the examples I see use custom methods like ones,zeros and eye but I want to create a 3x3 matrix which contains the values I want....
View ArticleHough clustering and sparse matrices
Hi, I would like to implement Hough clustering method described in this [paper](http://conf-scoop.org/IWIP-2014/4.V.Seib_IWIP.pdf). The whole idea is can be summarized in following way. 1. Do typical...
View ArticleOpencv not working in AWS EC2 instance
I have created a python flask application and it is hosted in AWS EC2 instance. I used apache2 for run it. My application is working fine but when I add opencv for it I got the below warning....
View ArticleFigure out location of computer screen in world coordinates
I'm using OpenCV and have a ray as a vector in world coordinates. I want to figure out the point in world coordinates where this ray intersects my computer screen. How do I figure out the location of...
View ArticleA Problem with Stitch
Recently, I'm working with opencv Stitch class. I try to use some sample code from opencv's stitch class. I also try to use some code from internet. They all seem to be very easy to understand. But the...
View ArticleWhy OpenCV4Android VideoCapture cannot open filename in android
I am new to Opencv4Android, now I want to use android to open a file from android device by filename, The codes are like below: VideoCapture cap; cap.open("/mnt/sdcard/DCIM/Camera/demo.mp4"); I found...
View ArticlePYTHON 2.7 PROCESSES HANGING AT OPENCV 3.0 FUNCTION
Dear All, I've been using a Python/OpenCV/Raspberry Pi 3 and a Pi Camera to recognise hundreds of white squares in each frame. In an attempt to get the frame rate a bit higher than 8 FPS I tried...
View ArticleHow can I skewed character in license plate exactly?
I try many way to skewed the image but not exactly at all. Can you help me? Thanks [C:\fakepath\Capture.PNG](/upfiles/14657292718849103.png)
View ArticleDocumentatio for neural networks in OpencV 3.0 +
Hello, OpenCV forums. I've been looking for documentation and/or plain examples of using the Machine Learning libraries of OpenC 3.1.0, but most of what I've found is 2.4 related and the names of...
View ArticleHow can I translate Matlab code to opencv to align image?
Here is Matlab: http://stackoverflow.com/questions/5770818/how-to-align-image-matlab
View ArticleWhere to get Nonfree modules?
I found tutorials using Feature detection. One of the tutorials includes these features: opencv2/features2d/features2d.hpp opencv2/nonfree/features2d.hpp opencv2/nonfree/nonfree.hpp I did not found the...
View ArticleProblems with rectified pictures for stereo vision
I m trying to do stereo matching but it doesnt work well until now. I determined the "tvecs" and "rvecs" for each camera. So i can use these relationships to get the translation vector and rotation...
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