Converting old drawings
Converting old drawings
(OP)
I am doing an addition/renovation project on a 1963 building. I am just daydreaming here... but it wouldn't be great if:
I could take a scanned image of the original drawings...
pull up the negative of it...
adjust the color and contrast to gray scale...
erase some extra information...
insert it into cad very close to scale...
and draw my new framing on top of that image in CAD.
I am not afraid of drawing the existing conditions... I just thought maybe someone had a more novel way of doing this.
I could take a scanned image of the original drawings...
pull up the negative of it...
adjust the color and contrast to gray scale...
erase some extra information...
insert it into cad very close to scale...
and draw my new framing on top of that image in CAD.
I am not afraid of drawing the existing conditions... I just thought maybe someone had a more novel way of doing this.






RE: Converting old drawings
RE: Converting old drawings
Perhaps removing the additional information prior to scanning is an option, using white-out for example.
RE: Converting old drawings
RE: Converting old drawings
Dik
RE: Converting old drawings
For smaller renovations or additions it worked okay. Problem
is, even if you get the scale worked out, the drawings are hand drawn and therefore errors will be evident.
The other problem is the speed. We found that raster images make the drawing regens sluggish.
If accuracy in dimensioning is not an issue, then you probably could use a raster image.
We have found the cost to vectorize an raster drawing image too high especially if you consider the possible inaccuracies that could be present. I prefer to have a junior draft the plan. At least any possibility of liabilities due to inaccurate drawings can be minimized.
RE: Converting old drawings
RE: Converting old drawings
Mike