What program to use to measure distances between markers on an image?

Question

Windows

Hello!
Now I am working with salmon scales (study of the sclerite structure of the scales and population monitoring). To calculate one characteristic, I need to measure the distances (from the center) to each formation on the scale plate (a kind of ring). Is there any convenient program (I know that there is, but I'm wondering which one is better) so that you can put markers (straight line) on the objects you are interested in on the image and get distance data for their quick transfer to the table?

Answer 1

Try it, though I wrote for the measurement on the map. By the way, you can finish it if you wish
https://github.com/vkorotenko/mouse
https://github.com/vkorotenko/mouse/releases/downl...

Answer 2

If you need several pieces - measure in any graphic editor. If you really need a lot, it would be logical to automatically place these marks, count them, and display them in some kind of plate. Software for this exists, of course, but it is better to ask around experts from related fields. Ivan Gumenyuk counted ground coffee, for example .
The arrangement of the points itself is nothing complicated, there are a couple of lines of code in total
Distance on the plane is also not difficult distance = √ ((x1 - x2) ² + (y1 - y2) ² )
Here I sketched an example: