Advice on software to do a 2d drawing

Discussion in 'Software' started by captf44, Jun 10, 2015.

  1. TANSL
    Joined: Sep 2011
    Posts: 6,244
    Likes: 302, Points: 93, Legacy Rep: 300
    Location: Spain

    TANSL Senior Member

    Really impressive.
    How can be deduced distances in space when data are available only in 2D (X and Y coordinates) ?, always missing the Z coordinate.
    I can understand what AD Hoc says, what the device obtaines from the photo, plus some data entered by the user, allows to do the 3D model. But this microscope is inexplicable to me. Could you provide some further explanation or any link?, thanks.
     
  2. DCockey
    Joined: Oct 2009
    Posts: 4,746
    Likes: 337, Points: 83, Legacy Rep: 1485
    Location: Midcoast Maine

    DCockey Senior Member

    DraftSight might work. It is very similar to AutoCAD, the basic version is mostly 2D and is free. You will need to see if it lets you import a photo to draw over.
     
  3. Kailani
    Joined: Apr 2013
    Posts: 113
    Likes: 8, Points: 18, Legacy Rep: 59
    Location: Hawaii

    Kailani Senior Member

    In post 8 he said it does it from photograph alone.




    Look at new depth technologies for smartphones:

    Intel RealSense snapshot Depth photography - "take pictures in layers that you can play with" ... "change focus after you shoot photo"
    http://www.intel.com/content/www/us/en/architecture-and-technology/realsense-snapshot.html

    Smartphones with multiple sensors and parallax
    http://www.mercurynews.com/ci_22956184/wolverton-new-technology-could-help-your-smartphone-camera
     
  4. TANSL
    Joined: Sep 2011
    Posts: 6,244
    Likes: 302, Points: 93, Legacy Rep: 300
    Location: Spain

    TANSL Senior Member

    I can have a look into "new depth technologies for smartphones" but the visual field of a microscope is always a little smaller than a smartphone, do not you think so?
    Who "select a few key-points" (Ad Hoc phrase selected by you).?, I thought was the user. That's why I said that the data obtained by the device, with additional help from the user, allows a 3D image.
     
  5. Kailani
    Joined: Apr 2013
    Posts: 113
    Likes: 8, Points: 18, Legacy Rep: 59
    Location: Hawaii

    Kailani Senior Member

    On the last school-lab quality one I used there is a coarse and fine focus knob and the fine focus is very sensitive. On my camera I know when I put on the macro lens the focus is very sensitive and the range in focus is very small. When I take a photo of a ruler at an angle, only 1/2" is in focus with the close-up lens and I can pick the 1/16" mark that is in the middle of the focus range.
    The microscope software could work similar to the intel realsense technology photographing layers at different focus and then using the sharpness in the photo to produce depth information. Or the other smartphone camera technology uses small changes in sensor angle to the object.

    I thought going from a single 2d photo it would be necessary to input numbers for anything that couldn't be traced in 2d on top of the photo. I am actually astounded the software has the artificial intelligence to figure out good enough 3d dimensions from a single photograph. I think/thought there is less data to go on than from a live microscope.

    I don't fully understand how this works - here is another bigger lens technology:
    http://www.gizmag.com/3d-imaging-single-lens/28591/
     
  6. TANSL
    Joined: Sep 2011
    Posts: 6,244
    Likes: 302, Points: 93, Legacy Rep: 300
    Location: Spain

    TANSL Senior Member

    OK, Kailani, I do not understand what you say nor the reason you have to say it so, if that's okay, I express my great admiration and retire from this discussion that totally beyond my limits. You may have wanted to prove something, sorry, but I do not understand.
    I regret not being useful to show off a little more.
     
  7. Kailani
    Joined: Apr 2013
    Posts: 113
    Likes: 8, Points: 18, Legacy Rep: 59
    Location: Hawaii

    Kailani Senior Member

    Sorry, I was replying to your post #16. Getting a 3D model from a microscope with a live object didn't surprise me as much. I posted the smartphone depth links because it's about how to get 3d from very little and low cost optics. I can imagine how software could take multiple "layers" at different focus setting, figure out through sharpness what's in focus. I can comprehend this after looking through a viewfinder adjusting focus and being aware of distance.

    The opposite from post 16, what I can't imagine yet is how the software works from one 2D photograph only. What depth data is in a normal photo with enough cpu power spent analyzing it. This interests me because it would be almost all software other than the little bit of focus data and shadow data in the single photo.

    Before I read page 1 I thought it was not possible from a single photograph. I thought it would be needed to have 3 views and assign matching points on each of the 3 views. Or I thought with only only one single photograph the user would have to supply the z measurement numerically.
     

  8. gonzo
    Joined: Aug 2002
    Posts: 14,598
    Likes: 708, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    The microscope uses auto-focus to calculate distance.
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.