Homebrew PCBs

On Sat, 22 Oct 2005 16:52:02 +0200, mikezcnc <eemikez@...> wrote:

>
> and then Raster should to some automatic magic to make the lines
> straight and beautiful.
> Anyone knows how to train a hamster in using a Photoshop?
> I'll give a good analogy to OCR and scan. If you scan a page it will
> scan not only text but many other dots and specs present on that page.
> OCR will take that page with many imperfections on it and output a
> text file as clean as the blank page in your printer
> Mike
>


I had moderate success with the following:
Scan it, very well, as line art ad carefully set the treshold.
(Alternatively you may scan as image and convert to 2-color in your  
software.)

Now, increase color depth again in your software, and blur the image. This  
takes out many of the scanning artefacts ("stubble"), if you convert to  
2-color again and set the threshold, once more, very carefully. I would  
expect there's software specifically for removing "stubble" (the 1-pixel  
wide uncertanity around the contour).

This does work, but not too well, and a hamster can't be trained to do it.  
Batch processing might be set up but without user intervention i think it  
unlikely to work.


I have been paid in the past to convert pictures to a layout format  
(gerber output in the end), so there is no quick and easy way. What i  
usually do is import the "picture" as a unused layer for a ackground in my  
software.




ST