Edge detection and reconstruction of an image..

Is there any proper way to reconstruct the edges using MATLAB or any proper algorithm ?

Answer 1

[Image Analyst]

You'll have to explain more. What happened to the edges such that they need "reconstruction"? What did you do to them? If you got them once, then why can't you just do the same operations to get them again?

[Piyum Rangana]

Ok .. How do I Reconstruct the boundary of a image using cubic splines in MATLAB? An example image as below.(Or is there any easy method to do the edge restoration for the damaged areas of the images as below). The region that I need to be reconstructed have been circled.

[Image Analyst]

I don't know what "edge reconstruction" means to you but I'm attaching an example of how to smooth a curve in 2D with splines.

Your second question is about inpainting, rather than the boundary, and we've discussed this in your other questions already and I thought you had a working solution.

[Piyum Rangana]

Thanks. With the help of the answers of previous questions, I fill the degraded area as I mention below. But in some scenarios like ROIs with Boundaries/edges, I fail to output a good solution. That's why I thought to use above way to inpaint those kind of regions. How ever I am still struggling with find the two points of each side to reconstruct the boundary/ edge of the ROI. Now my inpainted image as below.

[Image Analyst]

Yes, it looks fake, that's why I previously suggested regionfill() which smears in the color from the outer perimeter towards the center of the image. It still doesn't get the texture correct, but at least it's better than a uniform patch of a color that may not even exist in the original image.