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curve fitting of an image

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Ali Jarekji
Ali Jarekji 2022-1-4
评论： DGM 2023-9-13
I have this image which i changed to binary. I want to write a code that draws a fitting curve into the points shown in the figure attached. How can I do that?
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Image Analyst
Image Analyst 2022-1-4
It would be better to attach the original image, not the segmented image. Looks like your segmentation algorithm is not so good. Also post another image where you've painted the curve over the original gray scale image so we can see what you're trying to find.
Finally, say WHY it's the curve that you think you need to find, and if you actually had a list of (x,y) coordinates of the curve, what would you do with that information.

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回答（1 个）

VINAYAK LUHA
VINAYAK LUHA 2023-9-13
Hi Ali,
I understand that you wish to know about how to fit a curve to the points in a binarized image.
Follow the steps mentioned below in order to achieve that:
  1. Find the connected components in the binarized image using "bwconncomp" function.
  2. Convert the "PixelIdxList" in each found connected component to [x, y] data using the “ind2sub” function.
  3. Fit a polynomial degree curve to the data using the “fit” function.
  4. Display the original image using “imshow” function.
  5. Plot the fitted curves on top of the image.
Hope this helps.
Regards,
Vinayak Luha
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DGM
DGM 2023-9-13
Can you provide an example applying these steps to the given image?

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