I am attempting to use Image Trace to vectorise an illustration drawn with technical pens. The drawing has variable line thicknesses, which I want to preserve as accurately as possible, but also small dots that are used to emphasise the three dimensional nature of the subject (a skeleton destined for inclusion in a scientific publication).
I cannot seem to adjust the settings of Image Trace in such a way that I can preserve the dots at drawn weighting—they are either rendered very small or they disappear entirely—while maintaining the correct weighting of the lines. I've tried playing with every setting I can find. The Threshold setting brings out the small dots but over-emphasises the thicker lines.
I've tried the setting the noise reduction to a minimum but it's not enough.
(Nb: The drawing has been scanned at very high resolution and converted to black and white in Photoshop using the Threshold function (it looks really good at this stage). Even though the dots are small in relation to the size of the image, at the scanned resolution they each represent a fair number of pixels.)