Extract time-amplitude signals to a matrix from a png

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Giovanis Georgios
回答： Swetha Polemoni 2021-4-13
How can I extract the a-scan (time- amplitude) signals from a grayscale png. to a matrix?

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Swetha Polemoni
Swetha Polemoni 2021-4-13
Hi
It is my understanding that you want to get the x and y coordinates of few points from image.
  1. Read the image using imread.
  2. Display the image using imshow.
  3. You may use imbinarize to convert your image to binary image if needed.
  4. Click on the image points whose x and y coordinates needs to be calculated using ginput.

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