the blue path - a copy of the red path scaled down to examine how well it fits to the original. The red path - a trace run on this copy, andĤ. The larger pixel dimension bitmap copy,ģ. The last thing I did (optional, really) was to unlink the clones, then select all the black squares (using the Find dialog) and union them into one path, select all the white squares and delete them, and draw one large white square the size of the entire QRcode for the background.īarcode2512.svg (107.8 KiB) Downloaded 287 timesĢ. The next step was to select the original square, and change it's size to 4x4, which changes all the squares to 4x4, to get rid of the spaces. I then created the tiled clones, tracing the source image with colour, and added a 100% offset to the X and Y, to line up with the 4px QRcode grid. To do this I created a 2x2 rectangle (as the source image had 4 px blocks in the QR code) which was centered in the upper left QR code block, and fill "unset". The only "trick" is the initial clones can't be the size of the QRcode pixels when using the "trace colour" option in the tiled clones dialog, as it samples the perimeter and you don t end up with B&W clones. But in some cases, I've gotten a cleaner scan than what I could get with Trace Bitmap.Īnyway, good luck. It works very differently, so there's a bit of trial and error learning what all the settings mean. With some images, I've been able to get a better trace using it. Having said all that though, if it's a tiny, postage stamp sized image, you might not be able to get a really clean trace. Instead, you have to do a trace, then if you need to change the Threshold, Undo, and trace again. But note that the Preview does not Update for that option. Also, I think I'd probably go with a single scan option, on the Mode tab - probably Brightness Cutoff. I don't know if it has any effect on the trace, if there are no speckles to be suppressed, but you could try deselecting it, to see if it helps. I'm not sure if you need to use Suppress Speckles. Also, maybe put Optimize Paths tolerance as high as it will go. For example, try deselecting Smooth Corners altogether. You can probably improve the trace by changing some settings on the Options tab.
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