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Messages - bluescreenboy

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1
General Anim8or Forum / Anim8or's progress
« on: July 31, 2009, 01:28:55 am »
I think it would be a good idea to release anim8or to the open-source community so it can be built into something great in a shorter amount of time

2
ASL Scripts / Re: motion tracking request
« on: January 31, 2008, 04:36:05 pm »
Now that I look at it closer, I doubt it will help.  Oh well.

3
ASL Scripts / Re: motion tracking request
« on: January 31, 2008, 04:35:10 pm »
Here's some stuff.  I have no idea whatsoever if it will help, but I got it off a voodoo website, in a section labled: Camera Model:

Parameters of the CAHV camera model:
(Cx, Cy, Cz)    : CameraPosition [mm]
(Ax, Ay, Az)    : RotationAxis2  [unit vector]
(Hx, Hy, Hz)    : RotationAxis0 [pel] (including FocalLength, PixelSizeX, and Principal Point offset)
(Vx, Vy, Vz)    : RotationAxis1 [pel] (including FocalLength, PixelSizeY, and Principal Point offset)
(K3, K5)        : Radialdistortion  K3 [1/(mm)^2]  K5 [1/(mm)^4]
(sx, sy)        : PixelSize   [mm/pel]
(Width, Height) : ImageSize   [pel]

Internally used parameters:
(ppx, ppy)      : Principal Point offset [pel]
f               : Focal Length [mm]
fov             : Horizontal Field of View [degree] = (2*atan(0.5*Width*sx/f)*180/PI;
(H0x, H0y, H0z) : RotationAxis0 [unit vector]
(V0x, V0y, V0z) : RotationAxis1 [unit vector]

Image coordinates and 3D coordinates:
(x, y)          : image coordinates [pel]
(X, Y, Z)       : 3D coordinates [mm]

The projection of 3D coordinates in the camera image can be done by
 [ x' ] =  [ Hx Hy Hz ] [ 1 0 0 -Cx] [ X ]
 [ y' ] =  [ Vx Vy Vz ] [ 0 1 0 -Cy] [ Y ]
 [ z' ] =  [ Ax Ay Az ] [ 0 0 1 -Cz] [ Z ]
                                     [ 1 ]

or
 [ x' ] =  [f/sx 0    ppx] [ H0x H0y H0z ] [ 1 0 0 -Cx] [ X ]
 [ y' ] =  [0    f/sy ppy] [ V0x V0y V0z ] [ 0 1 0 -Cy] [ Y ]
 [ z' ] =  [0    0    1  ] [ Ax  Ay  Az  ] [ 0 0 1 -Cz] [ Z ]
                                                        [ 1 ]

then x = x'/z' and y = y'/z' , if the origin of the image coordinates is in the center of the image,
or x = x'/z' + 0.5*(Width-1) and y = y'/z' + 0.5*(Height-1) , if the origin of the image coordinates is in the upper left corner.

4
ASL Scripts / Re: Script Request: Chain Link Maker
« on: January 26, 2008, 05:05:50 pm »
That must of taken a long time to model.  Sorry, though, I can't write ASL for beans

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