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Math Help - Find plane angle from pictures

  1. #1
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    Find plane angle from pictures

    Hi all.

    I need to get some information about plane position and camera position from a pictures.
    I have i plane with 3 points (red,green,blue) and then theyre coordinates inside the image.
    Using circle and string i was able to get the y rotation of the plane where the points are on (the rotation of point of view)
    But now i need the x rotation of the plane (the up/down angle that the camera taken the picture).
    But i'm not able to find a way to get it.

    This is an image of the angle i need
    ImageShack® - Online Photo and Video Hosting

    For example this image have a x angle of around 90 (top view)
    ImageShack® - Online Photo and Video Hosting

    While this have an x angle of around 30
    ImageShack® - Online Photo and Video Hosting


    Any ideas?

    Thanks.


    Ps:the 3 points on the plane are disposed as a regular triangle.
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  2. #2
    MHF Contributor

    Joined
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    Quote Originally Posted by RavenAll View Post
    Hi all.

    I need to get some information about plane position and camera position from a pictures.
    I have i plane with 3 points (red,green,blue) and then theyre coordinates inside the image.
    Using circle and string i was able to get the y rotation of the plane where the points are on (the rotation of point of view)
    But now i need the x rotation of the plane (the up/down angle that the camera taken the picture).
    But i'm not able to find a way to get it.

    This is an image of the angle i need
    ImageShack® - Online Photo and Video Hosting[/tex]
    You have two pictures here. One is of a rectangular solid with red, green, blue arrows in x, y, and z directions, the other of a line with an angle marked x. What do you want help with? Do you want someone to measure angle x with a protractor?

    For example this image have a x angle of around 90 (top view)
    ImageShack® - Online Photo and Video Hosting

    While this have an x angle of around 30
    ImageShack® - Online Photo and Video Hosting


    Any ideas?

    Thanks.


    Ps:the 3 points on the plane are disposed as a regular triangle.
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  3. #3
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    Joined
    Dec 2010
    Posts
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    Quote Originally Posted by HallsofIvy View Post
    You have two pictures here. One is of a rectangular solid with red, green, blue arrows in x, y, and z directions, the other of a line with an angle marked x. What do you want help with? Do you want someone to measure angle x with a protractor?
    I need to get, from the pictures with 3 point (photo maked with a camera),the X angle formed between the plane and the camera. (i put the box with axis onyl to show how i orientate the axis)

    Thanks.
    Last edited by RavenAll; December 3rd 2010 at 04:48 AM.
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