Convert Perspective picture to Ortho picture for CAD

Click For Summary
SUMMARY

This discussion focuses on converting a 3D perspective image into an orthogonal representation suitable for CAD applications. The primary challenge is tracing a 2D perspective image of a 3D object within CAD software. Participants suggest using a 3D orthogonal coordinate system to generate a 2D projection onto the XY Plane, and emphasize the importance of capturing multiple perspective images from different viewpoints for accurate reconstruction. Resources such as photogrammetry and 3D reconstruction techniques are recommended for further exploration.

PREREQUISITES
  • Understanding of CAD software functionalities
  • Basic knowledge of 3D reconstruction techniques
  • Familiarity with photogrammetry principles
  • Ability to interpret geometric symmetry in objects
NEXT STEPS
  • Research "3D reconstruction from multiple images" techniques
  • Explore "photogrammetry" methods for accurate image conversion
  • Learn about "3D data acquisition" processes
  • Investigate CAD tools for creating orthogonal projections
USEFUL FOR

This discussion is beneficial for CAD designers, 3D modelers, and engineers involved in converting photographic data into precise CAD representations.

SSGD
Messages
49
Reaction score
4
I want to take a picture of an object. Then import the image into cad. And trace it. The issue I am having is the picture from the camera is a 3D perspective image. So it is impossible for me to trace in CAD.

Is there a way to convert an image from perspective to orthogonal? Or create a coordinate system in cad that is perspective instead of orthogonal.
 
Engineering news on Phys.org
SSGD said:
Is there a way to convert an image from perspective to orthogonal?
I assume you have a 2D picture of a 3D world, with a perspective vanishing point that can be located in 2D. Do you want a 2D orthogonal or a 3D orthogonal image?

SSGD said:
Or create a coordinate system in cad that is perspective instead of orthogonal.
Unless you specify the number of dimensions it is difficult to work out what mapping you are trying to perform.
A 3D orthogonal coordinate system from cad could be used to generate a 2D perspective drawing if you specified a viewpoint.
 
Well, the image is of a 3D world, but if I import the image into CAD it would be a projection onto the XY Plane. So I would say it is a 2D projection. If this helps. The image is a normal camera picture.
 
So you want to convert a 2D perspective image of a 3D object to an orthoganal CAD object.
But do you want to convert that to a 2D or a 3D orthogonal CAD object ?

How many perspective 2D images do you have from different viewpoints of the one original 3D object ?
Does the imaged object have some geometric symmetry that could be used to regenerate a missing third dimension ?
 
I need to convert it into a 3D orthogonal CAD object. The object is geometric. It is simply but to recreate it would take lot of measurements. I can take as many pictures as I need.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 10 ·
Replies
10
Views
1K
  • · Replies 4 ·
Replies
4
Views
3K
Replies
23
Views
72K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 25 ·
Replies
25
Views
12K
  • · Replies 25 ·
Replies
25
Views
3K
  • · Replies 4 ·
Replies
4
Views
10K
  • · Replies 40 ·
2
Replies
40
Views
6K