Some continuation on my previous posting on transformation
 CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums Developer.com

# Thread: Some continuation on my previous posting on transformation

1. Member
Join Date
Mar 2013
Posts
31

## Some continuation on my previous posting on transformation

Hello, this is some continuation of my previous posted topic on transformation. I have attached two pictures of rotation of different axes, i.e. X, Y and Z. Z rotation is the projection on XY plane for two different Z rotation. It shows how the length of the axis varies depending on Z rotation. Now my question is, from this information is it possible to figure out rotation of Z axis. Here as rotation is on XY plane, the length of X and Y axis does not vary, but that of Z-axis varies.

Thanks in advance.

2. ## Re: Some continuation on my previous posting on transformation

Originally Posted by jenny_wui
... Z rotation is the projection on XY plane for two different Z rotation. It shows how the length of the axis varies depending on Z rotation.
Your definition of "rotation" is not clear! How would it be that "Z rotation is" something "for two different Z rotation"?

3. ## Re: Some continuation on my previous posting on transformation

As this isn't specifically a c++ question, you might get more guidance if you posted to the Algorithm forum.

4. Elite Member Power Poster
Join Date
Apr 2000
Location
Belgium (Europe)
Posts
4,626

## Re: Some continuation on my previous posting on transformation

If what you mean is... from a given projected image (result) and a given input model figure out the amount of rotation along each axis:
then no this isn't unambiguously solvable for all possible input cases.

In the 3D to 2D projection phase, information is being lost.

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•

Click Here to Expand Forum to Full Width

This a Codeguru.com survey!