OpenCV Alternatives
While I very much appreciate the great effort that went in to developing OpenCV, and the free and open-source nature of it, I honestly can't remember ever having so much difficulty merely installing...
View ArticleI lose some text while making scanner-like effect
Hey, My goal is to create scanner-like effect. I have image taken by the phone and my result should make it look like it was scanned. My problem is that my code doesn't work on pictures, or big bold...
View Articlematplotlib>pyplot map colors wont work
. import cv2 from matplotlib import pyplot as plt import numpy as np img1= cv2.imread('hristos_karaiskos.jpg') #img1= img[:,:,::-1] replicate= cv2.copyMakeBorder(img1,10,10,10,10,cv2.BORDER_REPLICATE)...
View Articlecuda.hdd not found with Raspbian
I have spent the last few days trying to compile OpenCV and have failed in every attempt. At first, it was the cmake parameters that I needed to fix some superfluous inaccuracies on other pages. Then...
View ArticleSVM predict error on OpenCV4Android
Hi guys, I performed the training of an SVM based on the code below. I used C # for familiarity with the language. I tried doing with Java, directly on Android, but I had some problems as described in...
View ArticleRemove holes in an image without affecting the borders
Following is an example image and I would like to remove all the black part in the image with white. I can use a median filter to do it, but it will correspondingly also affect the borders. Is there...
View ArticleStatic compilation OpenCV & Extra Module
Hi all, I would like to build OpenCV with a single Extra Module, to build a specific application on Linux and Windows. So, how can I achieve this crucial point for me ? I am under Linux Debian with...
View ArticleHow to make dull text bold
Text on my image is dull and sparse in some places. How can I make it bolder and how can I join sparse regions on letter? (red circles on the second image)  ![I...
View Article[Asking for solution! No code!] Column detection with/without stereo vision
Hello guys, I am sorry to ask without code. I tried to calibrate my stereo fisheyes and failed, tried for a week to do it. Rectification and stereo calibrate is bad somehow. Anyways, my plan is for the...
View ArticleAndroid High speed capture
Hello, I was wondering if there is any attempt to try and use the...
View ArticleFind the center of mass of cells and crop the image
I am trying to make a program to analyze cell nucleus, but in order to do so, I need to isolate each nucleus and crop the image in a way that each nucleus will be centered (its center of mass will be...
View Articlecan anyone help me where can i get opencv_core341d.lib file??
can anyone help me where can i get opencv_core341d.lib file??
View ArticleBagOfWords works in C#, but not in C++
Hello guys, As suggested in this [post](http://answers.opencv.org/question/200193/svm-predict-error-on-opencv4android/), I implemented in C++, the same method I used to train my SVM in C #. Initially,...
View ArticleOpenCV / C++ - Filling holes
Hello there, For a personnel projet, I'm trying to detect object and there shadow. These are the result I have for now: Original:  Object: ![image...
View Article(-215:Assertion failed) 1
I'm trying to import my own pre-trained Caffe googlenet model using OpenCV v.3.4.3, where i run a Caffe test after training using the model deploy file and everything was working fine. However when...
View ArticleBuild Mobile Document Scanner by OpenCV.js
Hello, I'm a newbie in OpenCV and I'm using OpenCV.js for my app. I'm going to build a scanner app to take picture, auto detect document and crop it. I'm following the tutorial of [this...
View ArticleOpenCV Python Script Mac "aborts"
So I'm just trying to run the basic OpenCV program import numpy as np import cv2 cap = cv2.VideoCapture(0) while(True): # Capture frame-by-frame ret, frame = cap.read() # Our operations on the frame...
View ArticleOpenCV v.4.0 not receiving frames and throwing -215: Assertion Error....
We are trying to use an Intel Realsense D435 with OpenCv v4.0 on a Linux Ubuntu 18.04 x64 os. We are able to open the camera. But we are not able to capture/receive frame. We are able to use the...
View ArticleCompare two images and highlight the difference
Hi - First I'm a total n00b so please be kind. I'd like to create a target shooting app that allows me to us the camera on my android device to see where I hit the target from shot to shot. The device...
View ArticleError 'module' object has no attribute 'TrackerMIL_create'
OpenCV 3.4 Python 2.7 My code: import cv2 import numpy as np from datetime import datetime import time now = datetime.now() i=0 cap= cv2.VideoCapture(0); fourcc = cv2.VideoWriter_fourcc(*'XVID') out=...
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