Does high resolution (dpi) assure vector accuracy?
TracTrix follows either the centerline on lines or the outline of images. It achieves this by looking for pixels. In centerline tracking, TracTrix looks for the chosen line width by looking at pixel quantities across line and seeks the mean center of the line. Having more pixels from a higher resolution will not necessarily create a “better” mean centerline. When following an outline it looks for pixels on the edge of the image. Higher resolution might present a ‘smoother’ less jagged edge for TracTrix to vectorize but the vectors are not more accurately created. Higher resolution makes for bigger files to manipulate. Bigger files require more pre-processing storage and processing takes much longer (twice the resolution means four times as many pixels to store and process). As a general rule, there are rapidly diminishing returns from increasing resolution for raster to vector conversion. We tend to use 300 dpi or 400 dpi. Occasionally we need 600 dpi for small, finely detailed, origin
