Java: Eclipse crashes(linux)

I am using eclipse 4.6.3 and ubuntu Budge(17.04) I am trying to call a method from another class. In that method I have done some opencv task. But whenever I tried to call and compile, it shows this message. # A fatal error has been detected by the...
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2017-10-02 11:10 (1) Answers

Feature Vector Partioning

I'm reading about image search and I've gotten to the point where I have a basic understanding of feature vectors and have a very basic (definitely incomplete) understanding of rotation invariant and scale invariant features. How you can look at mult...
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2017-09-01 20:09 (1) Answers

OpenCV image Comparison And Similarity in Android

I'm OpenCV learner. I was trying Image Comparison. I have used OpenCV 2.4.13.3 I have these two images 1.jpg and cam1.jpg. When I use the following command in openCV File sdCard = Environment.getExternalStorageDirectory(); String path1, path2; ...
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2017-08-29 09:08 (1) Answers

Android Paper Detection using OpenCV

I am trying to implement Paper detection through OpenCV. I am able to understand the concept of how can I get it, Input-> Canny-> Blur-> Find Conture-> Search (closed)Quadrilateral-> Draw Conture but still, I am new to OpenCV programming. So having...
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2017-08-24 13:08 (0) Answers

Can't compile OpenCV in Xcode

I'm trying to use OpenCV and I just want to use UIImageToMat. ENV Xcode 8.3.3 Swift 3.0 OpenCV 3.2.0 ERROR Apple Mach-O Linker Error Group "UIImageToMat(UIImage const*, cv::Mat&, bool)", referenced from: clang: error: linker command faile...
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2017-08-17 03:08 (1) Answers

How to segment bent rod for angle calculations?

I'm trying to use OpenCV to segment a bent rod from it's background then find the bends in it and calculate the angle between each bend. The first part luckily is trivial with a enough contrast between the foreground and background. A bit of erosion...
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2017-08-10 18:08 (2) Answers

How to change CUDA version

I met this error when compiling a modified caffe version. OpenCV static library was compiled with CUDA 7.5 support. Please, use the same version or rebuild OpenCV with CUDA 8.0 I have some old code may not compatible with CUDA8.0, so I want to chan...
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2017-08-03 09:08 (0) Answers

Preprocessing poorly scanned handwritten digits

I have a few thousands of PDF files containing B&W images (1bit) from digitalized paper forms. I'm trying to OCR some fields, but sometime the writing is too faint: I've just learned about morphological transforms. They are really cool!!! I fe...
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2017-07-10 23:07 (1) Answers

Blur Detection on image capture using AVFoundation

Hi I have captured image using AVFoundation and cannot able to detect blurry image. I have tried the proposed solution in the following link: OpenCV with Laplacian formula to detect image is blur or not in iOS but it works only on the images capture...
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2017-06-29 18:06 (0) Answers

Calling OpenCV python script with php page

I am trying to run a Python Script for Image Detection Via a php page and to catch and display the output generated by py script. Here is my python script GITHUB LINK I am running the python script using this code : $command = escapeshellcmd('sudo...
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2017-06-25 11:06 (1) Answers

How to use brew opencv3 with C++ on mac?

I installed opencv3 using homebrew using this tutorial But how can I use it with C++ on eclipse/xcode? I went through the opencv documentation for eclipse CDT here. But I dont have a separate opencv folder in /usr/local but rather a single folder /u...
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2017-06-10 18:06 (1) Answers

OpenCV can't detect color red correctly

Recently, I'm trying to use java OpenCV to detect the color of a Rubik's Cube. My Rubik's Cube has six colors including white, yellow, orange, red, blue and green. The color space I use is HSV color space. According to Wiki, each color has their uniq...
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2017-05-14 16:05 (0) Answers

FileStorage::WRITE .xml tag on opencv

I've been trying to write a nested .xml file with a vector<vector<Point>> data type in OpenCV (on C++). However, I have always one extra tag created within the loops: string filename = "test.xml"; FileStorage fs(filename, FileStorage::W...
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2017-04-22 19:04 (1) Answers

Remove glare from photo opencv

So, im using opencv to capture a document, scan it and crop it. When there is no lighting in the room, it works perfectly. When there is some light in the room, and there is a glare on the table and the document is near it, it also grabs the glare as...
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2017-04-18 13:04 (1) Answers