![]() The best option is to get vector images originally, as user joojaa suggested. Check this old case about that subject: Tracing a raster image to simple paths with stroke but no fill You can also use software which is intended to vectorize scanned CAD drawings. Illustrator has it and it even works if the lines are narrow. One possiblity to get midline traces is to use other software. To control line styles and widths you must have simple strokes. Those shapes can in simple cases be the outer shapes of the broken apart results of the tracing. If you need filled areas for better legibility and you must use Inkscape's tracing, you can do as user Billy Kerr said and insert shapes at the bottom. You see a knot and several stray dots which all need to be deleted with the node tool. In the middle the blue curve is a copy of the inner shape with effect "Dynamic Offset". In the left there's the parts of a broken apart combined path. You must convert the Dynamic Offset effect to path and remove some nodes with the node tool. ![]() That unfortunately creates often a messy knot in a corner. One of them is to apply Path > Dynamic Offset to the outer or inner part of the broken combined path. If you search a little, you'll find plenty of tricks to create the missing midline. That's because the stroke is half of its width in a wrong place. In some cases you can simply remove the inner shape, remove or change the fill color and insert a stroke, but often the result will not look out right. It's easy in a text to refer a part with its color. I guess you want simple paths because you want to adjust line width, its style and you here and there need faint fill colors for better legibility. The result is two paths (path829 and path833) If version 2 were broken apart, the resulted paths would both have black fill color If you break it apart, you get the outline and the inner shape which had made the hole when the paths were combined.ġ) A bitmap image it's image823 in the objects panelĢ) the image as traced to vector (path825)ģ) a duplicate of 2 but the fill color is removed and a thin stroke is inserted.Ĥ) a duplicate of 3 after breaking it and moving the parts a little apart. The empty interior areas are in many cases made as combined paths. Remove the fill color, add a thin stroke and see it by yourself. Even the thinnest curve is a closed area with a fill color. ![]() In Inkscape traced lines are not simple curves. I'd add the picture of the preview so that you can see that some parts are filled with white and some are not, but I'm limited to two pictures. On this one, you can see that by decreasing the alpha value, it actually gets darker instead of transparier. On this one, you can see at the bottom that the alpha value is at 100% ![]() I'm putting some pictures to illustrate : To put the alpha value to 0%, but then it also appears black.To select the path, and press 'delete', but it appears black afterwards.I'm sure you see where I'm going : after that, I had my lineart with the colors I wanted, but some parts were filled with white, and I'd actually want them transparent. Select the paths that where previously transparent, and fill them with white.Select the lineart paths I want in color and fill them with color.svg file of my black lineart on transparent background.Īt that point, all of my closed paths became filled with black, which I thought, fine, whatever, I can just fill it with white. Now comes the part I'm not familiar with, because usually after this I have the. Selecting the old image below the newly created path, deleting it.Clicking Path -> Trace Bitmap -> Brightness cutoff with whatever threshold worked for me -> Ok.Selecting the lineart by clicking on it (do remember that since I'm a newbie, there are a lot of things that I do because I know it works, even if I don't know how it works).I looked it up and found a tutorial that seemed to give me what I wanted so I followed the following protocol : The original image is grayscale, I'm the one adding the color. I know how to vectorize lineart as to have black vectorized lineart, but for this one I needed two different colors for the lineart. png image with some lineart that I wanted to vectorize. I'm very new to Inkscape, and I'm sure I'm missing something trivial.
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