Hough Lines Transform / Thread counting on a picture ?

Question

Hough Lines Transform / Thread counting on a picture ?

MayoudP opened this issue 5 years ago · 4 comments

By any chance, is it possible to use this library in order to achieve Hough Lines counting ?
Count the number of lines on a picture. The picture is basically a painting board.

Sorry, it's more a question than a bug 😬

Thanks for the help anyway.

Answer 1 · 2019-11-27T19:08:00.000Z

Hi @MayoudP yes please take a look at the sample app HoughCircles2 in react-native-opencv3-tests in the code where it draws the circles you want to replace that with counting the hough lines and switch out the call to houghCircles to the houghLines I am not sure of the exact method names.

Answer 2 · 2019-11-28T14:56:01.000Z

Thank you very much for your answer, I'll have a look this week-end.
Do you know where can I check all the existing method and their specs ?

Answer 3 · 2019-11-29T05:04:38.000Z

Hi @MayoudP not all of the OpenCV methods are supported just a good chunk of Imgproc and Core methods I am pretty sure HoughLines is supported you will have to check out opencv.org to find the java documentation for the 3.4.4 android release of OpenCV. It invokes the method at run-time so as long as the method exists in Imgproc or Core and the parameters are of the correct types it will just call the method.

Answer 4 · 2019-12-04T09:05:26.000Z

Alright thank you, and last question, does the algorythm with openCV (HoughLines) would be able to detect lines (Vertically and Horizontally) on such images like this ? In your opinion...