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Thread: convert .tiff file to .dwg file

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    Member cobra1964's Avatar
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    Default convert .tiff file to .dwg file

    does anyone know how to convert .tiff file to .dwg file? I have tried to convert the .tiff file to a .pdf file then to a .dxf file useing pdf2cad but it is still an image. The file is a cad drawing but for what ever reason I cant get .dwg file from the engineer. I have ask for a .pdf file and I have been waiting for several days. I cant wait an longer I need to get started. please help if you can.........

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    Default Re: convert .tiff file to .dwg file

    If you don't have the time now, then you won't later. Converting from a raster file to a vector (dwg) file is time consuming and generally not worth it. The best tool that I can think of is the vectorization tools that come with Raster Design, but even then that won't give you what I think you are asking for. That raster file was probably scanned, so even if you do scale it parts can be stretched out of proportion.

    Add the image as a reference, as you would an XREF.

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    Certifiable AUGI Addict tedg's Avatar
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    Default Re: convert .tiff file to .dwg file

    Quote Originally Posted by cobra1964 View Post
    does anyone know how to convert .tiff file to .dwg file? I have tried to convert the .tiff file to a .pdf file then to a .dxf file useing pdf2cad but it is still an image. The file is a cad drawing but for what ever reason I cant get .dwg file from the engineer. I have ask for a .pdf file and I have been waiting for several days. I cant wait an longer I need to get started. please help if you can.........
    Sounds to me like you need to make a choice,
    1. Get the drawing from the engineer, even if you have to go over his/her head.
    2. Redraw it yourself, bill the client or the engineer for your time.
    3. Use it as a reference (as "dgorsman" wrote) by inserting the tiff file, and edit over it.
    I've used option 3 before in an emergency, insert the image as a background and use whipeouts to cover what you need and edit as needed.

    I guess it depends on what you need the drawing for.

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    Administrator rkmcswain's Avatar
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    Default Re: convert .tiff file to .dwg file

    Raster to Vector is an inexact science at best. See tedg's response
    R.K. McSwain | CAD Panacea |

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    Member cobra1964's Avatar
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    Default Re: convert .tiff file to .dwg file

    I figured that it was a lost cause. I thought that I would give it a try. I thank you all for your advice. I have already started re-drawing using the hard copies that I have.

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    Default Re: convert .tiff file to .dwg file

    You could print the tiff to a dwf file & import as an overlay, as a quick solution.

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    Default Re: convert .tiff file to .dwg file

    Why bother to convert at all?
    Load the tiff image, use the Reference option of the Scale and Rotate commands to set it up correctly then trace over it. Not ideal but ....

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    Default Re: convert .tiff file to .dwg file

    The problem is that the TIFF is simply a set of dots. Converting it to anything else (like PDF or DWF) will simply add an image object to that. I.e. you'll still end up with an image in AutoCAD.

    However you do get some programs which will try to "Vectorize" a Raster file like TIFF. Do a Google search on raster vectorize there's quite a few possibilities. Some might even be decent.

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    Default Re: convert .tiff file to .dwg file

    It really depends on the source file, other information available and what you want to end up with.
    For an engineering detail with known dimensions - just recreate it.
    For an arrangement drawing or an "impression" - just attach the image file.
    Most often you'll be between those extremes: without known dimensions and with no need for great accuracy - automatic vectorisiation
    with some known dimensions and a desire to be reasonably accurate - scale the image and trace.

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    Default Re: convert .tiff file to .dwg file

    None of them are totally automatic, & totally accurate. You could waste more time reviewing & editing them, than redrawing them.
    Give people a job worth doing, the tools to do it, recognition of a job well done & get out of the way.

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