Revision history [back]

How do I detect the curvy lines in OpenCV?

I am new in OpenCV and I would like to detect the curvy lines in an image. I tried Hough Transformation, but it detects only the straight line. I want to detect a line something similar to this, but not as curvy as this

Curvy lines

Thank you very much!

Regards

How do I detect the curvy lines in OpenCV?

Curvy lines

Thank you very much!

Regards

EDIT 1:

   import numpy as np
   import cv2

   # Read the main image

   inputImage = cv2.imread("input.png")

   # Convert it to grayscale

   inputImageGray = cv2.cvtColor(inputImage, cv2.COLOR_BGR2GRAY)

   # Line Detection

   edges = cv2.Canny(inputImageGray,100,200,apertureSize = 3)

   minLineLength = 500 
   maxLineGap = 5 

   lines = cv2.HoughLinesP(edges,1,np.pi/180,90,minLineLength,maxLineGap)

   for x in range(0, len(lines)):
       for x1,y1,x2,y2 in lines[x]:
           cv2.line(inputImage,(x1,y1),(x2,y2),(0,128,0),2)

   cv2.putText(inputImage,"Tracks Detected", (500,250), font, 0.5, 255)

   # Show result

   cv2.imshow("Trolley_Problem_Result", inputImage)

This is my code, and the output of this code is (the green line in the image is the result):

Tracks detected

As you can see, the curved tracks are not detected properly. If I increase the threshold value, it detects the lines on the tram (it's detecting now too) and also on the humans.

What do you suggest, so that I can improve the code and detect the curved tracks as well?

Thanks a lot :)

Regards