CODEWITHSUNDEEP
opencv
madan ram
madan ram

Reputation: 1270

stroke width transform opencv using python

I have an image I wanted to find stroke width in the image. So far i am able to find phase angle from Sobel operator.Now how to use it find width.

Sobel operator for gradient angle

give post related to finding angle but not the stroke width please help.

Upvotes: 1

Views: 1870

Answers (1)

Haris
Haris

Reputation: 14053

Assume you have initial point and angle(gradient).

Then using equation

   x2 = x1 + length * cos(θ) 
   y2 = y1 + length * sin(θ)

and θ should be in radians

   θ= angle * 3.14 / 180.0

In a loop find x2,y2 by increasing length gradually, and for each x2,y2 access pixel value and check whether it is your stroke color, if it is increment a counter else break the loop and take the value of counter as your stroke width.

      Vec3b pix=image.at<Vec3b>(y2,x2);
      if(pix==yourstrokColor)
           strokeWidth++;
      else break;

Upvotes: 2

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