Think of it as the vector version of the "jaggies." Vector graphics can easily be just as jagged (and just as ugly) as pixels.Īnd that is very often the case with the results of auto-tracing because it is done by an automatic algorithm completely devoid of human shape recognition or knowledge of what is considered "smooth." It is quite common that if you zoom into the entirely vector-based results of auto-tracing, you see a jumble of jagged, irregular paths. That is not the only kind of ugly jaggedness that occurs in computer graphics. Pixelation results from scaling (or zooming) a raster image sufficiently large that the square shape of the individual pixels that comprise the image become evident. But "smooth" and "non-pixelated" are not the same thing. If you zoom into a raster image in a PDF (or in any other file), yes, you should expect to see pixelation. If you want to understand what you're hoping to do, read on: The details are all in the documentation.
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