Find the value of pixel around a circle
Hello,
I want to draw a circle that allows me to collect informations about my image. I have done a DFT, and I want to get the information of low and high frequencies with a circle. The question is " how can I use the circle as a system of mesure ?" If someone could explain it to me, it will be great.
Jeje20
I think you shall start reading this; then ask what you do not understand... ;)
For Line there is lineIterator I don't find for circle.
But I think you can use distancetransform with L2_dist. You can apply distanceTransform to an image included a white disk center at frequency 0 with same size than your spectrum. Result will be an image with value decreasing from center to boundary. Then you can use this value to explore your spectrum like using a mask.
May be an another way is possible