Random forest implementations in opencv 3.3
Hi, the cv::ml::RTrees::create() construct a Random Forest, but I think this RTrees class is actually not finished to implement right? Because you can not find a constructor with number of trees you...
View ArticleStitching with camera translation
Hi can you help find a code witch takes 2 images in input and stichs them. I found a lot when the camera does rotation (homography, etc..) but not translation. (parallax error, distortion?) Thank you...
View ArticleHow to match object in image with SURF on Android
Hello guys, I am trying to build an application that has a capability to matching an image using SURF, I've succeed to obtain the keypoints and descriptors for each image. but when I try to match it...
View ArticleCMake Build Error OpenCV 3.4.0
System information: - OpenCV => 3.4.0 Operating System / - Platform => Windows 7 (64 Bit) - Compiler => Visual Studio 2015 I 'd like to build the OpenCV 3.4.0 using CMake 3.10.1 on Windows 7....
View Articleopencv 2.4 upgrade opencv 3.4 Methods didn't
opencv 2.4 upgrade opencv 3.4 Methods didn't blobtrack.hpp Inside opencv2. Framework of opencv 2.4 The opencv2. Framework of opencv 3.4 does not have this blobtrack. HPP
View ArticleMultiprocessing in image processing
Hello guys, i am currently working on image processing using the multiprocessing library in python, i have been thnking of 2 possible route: 1.) what I want to do is I have a video and we know the...
View ArticleSlow matrix multiplication when using OpenCL enabled OpenCV
I made a simple program to test the performance of OpenCV with and without the help of GPU. GPU code is implemented using OpenCV/OpenCL Transparent API method. Overall, GPU enabled process always runs...
View ArticleDetermine the different corners of a rectangle detected on screen
I have an image with a significantly large rectangular area in it, as shown in the image below. [C:\fakepath\paper_new.png](/upfiles/15151431325063816.png) (On an Android phone) I can easily detect the...
View ArticleExtracting stick-it notes from image problem
Hi All! from 2-3 weeks I am trying to extract stick-it notes from image. Until now I am able to extract some of them with better or worse results, but for some images it doesn't work at all. When...
View ArticleLoading Model for FisherFaceRecognizer
Hi there, I'm trying to load model files for a FisherFaceRecognizer. The initial problem is that the program was written for an older OpenCV version and it seems some interfaces were changed. Info...
View ArticleHow to do skeletonization for this image
Hey guys, im trying to do skeletonization for this image using python 3.6.3 opencv.  I'm hoping to use Guo-hall or Zhang-Suen thinning algorithms to...
View ArticleSIFT Descriptor content
I got really confused by the content of SIFT descriptor. As I got the descriptor should contain the orientation of keypoints. For each keypoint 128 numbers different orientations. And then a feature...
View Articlehow to count coins with open cv
hello at the moment i used the hough trasform to detect the ratio of the coins, i used the code exemplo of the open cv site, but now i just can't put a value for the coins, i´m new on this... my work...
View Articlesee the dictionary content from Bag of Words
Hi, Is it possible to see the dictionary content as visual words from a bow? I found interest points and descriptors of a group of images and clustered them. Now I have a dictionary of visual words...
View ArticleTemplate matching not working as expected
I am very new to opencv and using for template matching.Actually i want to match two images below are my code snippet int match_method=Imgproc.TM_CCOEFF_NORMED; Mat temp =...
View ArticleAttributeError: 'module' object has no attribute 'face'
I got an error when running opencv in Python on raspberry pi. I tried to find and apply it to fix the error, but it did not work out. I also confirmed that the module "face" is in the file...
View ArticleIs there possible to train own data-set in Tensor-flow and then detect...
I am trying to train my own dataset (e.g: dog, cat) using Tensorflow and then using OpenCV for to detect those objects in bounding boxes, I have trained the dataset by using...
View ArticleOpenCV does support Windows Media foundation codecs?
Hi, I am trying to build the opencv with Microsoft media codecs. The build was a success. But Video Algorithms part are not working, When I tried to track an object using the opencv c++ implementation....
View ArticleI am searching for 90fps camera to work with opencv-python..
I need to capture a fast moving ball using color detection. Right now am using 60fps camera at 640x480 (PS EYE). But that isn't sufficient, Can anyone suggest me a camera that works 90 fps on 640x480 ?...
View ArticleOpenCV c++ K-Means Color Clustering
Hi, I found some interesting article about colour clustering with OpenCV and Python: https://www.pyimagesearch.com/2014/05/26/opencv-python-k-means-color-clustering/ I am trying to convert that into...
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