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I would like to ask you how I can fix a number of points to show in a picture. In the previous post (Is it possible to get the coordinates only for the highlighted points from an image?), JimB suggested a good solution to determine the contour of the image and get the coordinates of those points. It would be interesting to know if there is a way to select a certain number of points that can "draw" the image (for example, 10). I tried using MaxFeatures ->10 in the ImageCorners, but it randomly selects the points.

enter image description here

Thank you for all the help you will provide it.

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  • $\begingroup$ You could try to play around with the radius and threshold parameters of ImageCorners to reduce the number of points in a more meaningful way. Of course, this is an indirect approach since you can't set the maximum number of points, but it should be better than randomly selecting a subset. $\endgroup$ – Lukas Lang Sep 23 '19 at 21:12
  • $\begingroup$ Thanks Lukas. I tried what you suggested, but the result is very (very) bad. I cannot find a good image by dots by reducing the number or fixing it. At least, I would like to have dots in the main parts of the figures, just to 'see' the shape of the image using a few dots. $\endgroup$ – Val Sep 23 '19 at 21:34

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