Icarus is irritating me

hey all. I have been trying to match move (calibrate) in icarus the past few days. I have followed the tutorials provided with it but am not getting very far. My 3D data just never looks right with the live action footage. Does anyone have any tutorials of there own that might help out?

thx

 

Make sure your lense settings are the same in 3dsm as in real life. I believe the setting is FOV.

 

yea

 

"Paging Zap, paging Zap. Your needed at the Help Desk."

heh

anyone else?

 

Well, Icarus, like all matchmoving software, does their damndest to figure stuff out. In a pure pan/zoom/tilt world, it almost always does.

In a "moving camera" world. It sometimes does. Often, it does not.

The main PROBLEM with Icarus, is that it has no manual options. (This was one of the things they, on my insistance, was working on when it was pulled from the public).

You see, sometimes Icarus totally misunderstands. Think near is far and far is near. If there was a way to TELL it, hey boy, THIS thing is CLOSER than that OTHER thing, and THESE three points are in the SAME PLANE... and stuff like that... it would have more constraints on the point and get things right more often.

That said, my question to you is these:

1. Does the icarus output look good while inside icarus? I.e. if you track and calibrate, and place a cube marker inside ICarus, does it look like its trackign okay?

2. If so, check the camera skew, principal point. Often you see these values varying wildly. But no computer camera can vary these, so they must be constant. (You can turn on "view restricted camera" to see this).

3. If you do have strange values in the skew and principal point, then run a BUNDLE ADJUST on the calibration. Often, Bundle adjusting is a lifesaver. It tries to re-match the calibration and constrain principal point and skew to sensible (non varying) values

4. It this doesnt work, you are a paddle-less creek sailor, sorry.

/Z

 

thanks for replying Zap.

The calibration looks pretty good from inside icarus, i deleted most the points that were jumping around when they shouldn't.

I will try some of this stuff when i get home.

Thanks again Zap.

 

The problem could be your camera, mine is a PC camera and it distorts the image, if it does that it will never be right, no matter what you do.

 

well all lenses distort it some. I am using a DV camera.