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2017-06-22 07:12:46 -0500 received badge  Popular Question (source)
2013-12-14 16:50:38 -0500 asked a question Android optimization - line detection is slow - Hough Lines

in my project I need to detect lines in image. I actually have to detect rows and columns inside rectangle. I use OpenCV to accomplish this. I have done it succesfuly but it's kinda slow. I use many functions to preprocess the image - e.g. thresholding, canny, dilation, gaussian blur etc.

I use HoughLines like this

Imgproc.HoughLines(image, lines, 1, Math.PI/90 , threshold, minLineSize, maxGap);

It takes about 2.5 s to complete my program which has ~ 600 lines. But on this one line it takes 2.2 s. As you can see I use Java interface for OpenCV. Is it possible to optimize it someway? Would rewriting my program to NDK make it faster? If I understand OpenCV4Android, than it's just wrapper for functions written in NDK, so I don't think it would be faster. Or is there better and faster approach to detect lines in image? Thanks for any advice.

2013-09-23 15:23:19 -0500 received badge  Student (source)
2013-09-23 15:19:05 -0500 asked a question OpenCV Android - Static initialization in Android Studio

Can someone guide me how to make it with static initialization in Android Studio? Thanks

There's tutorial for Eclipse - http://docs.opencv.org/doc/tutorials/introduction/android_binary_package/dev_with_OCV_on_Android.html#application-development-with-static-initialization.

2013-09-23 14:47:05 -0500 answered a question How to work with OPENCV4ANDROID- in android studio

Can someone guide me how to make it with static initialization in Android Studio? Thanks

There's tutorial for Eclipse - http://docs.opencv.org/doc/tutorials/introduction/android_binary_package/dev_with_OCV_on_Android.html#application-development-with-static-initialization.