hi, i am finding it difficult to get an appropriate method for segmenting a tooth out of an periapical xray.

In the paper they had used an xray of extracted tooth and for that the technique used was basic threshold method. pls suggest me a technique for the same.

Answer 1

[Image Analyst]

If it's a human dental x-ray, it won't be that good a segmentation. But a basic thresholding goes like this:

thresholdedImage = grayscaleImage > 120; % or whatever value works.