SURF and SIFT algorithms doesn't work in OpenCV 3.0 Java for android
I tried to use Sift or surf descriptors for machine learning in an android application. But when i run the program i get this error. OpenCV Error: Bad argument (Specified feature detector type is not...
View ArticleAndroid mobile phone 2.2 E11 Apad
Each full year, researchers asked the kids that they experienced picture games on weekdays and weekends often, what three games were their favorites and how much violence was in those games. The...
View ArticleUK's Royal Opera House Launches IPhone Game
Learn how your relatives as well as friends keep in mind how the husband and wife used to check by playing a photograph matching contest. Strategy & Methods: World Warfare II may not be one of the...
View ArticleSmooth or blur image edges using opencv
I want to feathure smooth or blur image edges using opencv. This is what i tried int lowThreshold = 100; int ratio = 3; int kernelSize = 3; Mat srcGray, cannyEdges, blurred; cvtColor(input, srcGray,...
View Articlepictogram recognition in Android app
Hello, I would like to use an algorithm of OPEN CV to be able to recognize pictograms or words on a label - The label would have a dark or a clear background - It could be in paper or in tissue (which...
View ArticleHow can get vertically divided areas?
I am making an android application. This application provides binary analysis of captured photos. My question is this. **In case of image1, I wanna get 5 vertically divided areas as image2.** How can I...
View Articlefourier descriptor in opencv
I tried to implement fourier descriptor to use it in machine learning algorithm but i got this error OpenCV Error: Assertion failed (type == CV_32FC1 || type == CV_32FC2 || type == CV_64FC1 || type ==...
View ArticleOpenCV in platform indepentent Gradle project (for Android and Desktop)
I'm using Gluon Mobile plugin in Eclipse to deploy a basic imaging project to Desktop and Android. Gluon Mobile creates a Gradle-based project and uses javafxports. So the idea is write once - run...
View Articleface recognition
http://docs.opencv.org/2.4/modules/contrib/doc/facerec/tutorial/facerec_video_recognition.html#prerequisites how to run this example in android studio
View ArticleI am not able to select objects from image after using fill contours in android
mIntermediateMat= new Mat(); Bitmap bmp = BitmapFactory.decodeResource(getResources(),R.drawable.al);; Mat rgba= new Mat(bmp.getHeight(), bmp.getWidth(), CvType.CV_8UC1); Utils.bitmapToMat(bmp, rgba);...
View ArticleCropping a portion from a Mat image.
Hello All...I am building an application (in Android using OpenCV library) in which cropping a portion from a Mat type image is required. When I'm running the application it's getting crashed by...
View ArticleCan not find Java folder in OpenCV build
I have built OpenCV for android on Windows using CMAKE, MINGW and NVIDIA Android NDK. After I `make` it and `make install` it, I found the following folders: install: -apk: -sdk: --etc --native there...
View ArticlefillPolly() and drawContours() not working
I am new to image processing and I cant get fillPoly() working. Also, drawContours() is leaving some spaces while drawing contours Size sSize5 = new Size(5, 5); mIntermediateMat = new Mat(); Bitmap...
View ArticleImage processing with openCv in android ?
Hi, It's my first time with openCv and android, Before I learn it i need to make sure that it will be useful for my app, I worked on an android app that capture an image and make some image processing...
View ArticleCamera Calibration with Nexus 5x
I try to get the Intrinsic Parameters from the Nexus 5x Camera. I used the camera calibration sample from the android samples and modified the manifest, so the screen orientation is the same as the...
View ArticleNested if-else conditions
Hello All...I know this is very small and stupid doubt but I don't know why I'm getting stuck here. I am using nested if-else loops inside "for" loop in my code but it at all not going inside this...
View Articlehow i use opencv on android studio
im just lost, cant even load the samples, or build their code
View ArticleOpencv(3.10) android- How to draw an object's trajectory
I have a project in college where I have to draw the trajectory of an object based on the color of it. Is being built based on colorBlobDetection. This is part of the code I have so far: public Mat...
View ArticleEye Blink detection with opencv in Android
Hi, Anyone can give a suggestion or share the source code with using Android Studio? I made the eye detection already, but how should i do with eye blink detection? I really need help, thanks. i found...
View ArticleBuild failure with android ndk r13b and c++_shared
Because of other dependencies we need to build openCV with ndk r13b and the stl c++_shared. We build on mac OSX. First we had to fix a small thing in *android.toolchain.cmake* since apparently some...
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