CGTalk > General Techniques > Compositing and Editing
Login register
Thread Closed share thread « Previous Thread | Next Thread »  
 
Thread Tools Search this Thread Display Modes
Old 09-15-2013, 03:17 PM   #1
AndreSpence
PRO
portfolio
Andre Spence
Brampton, Canada
 
Join Date: Apr 2007
Posts: 67
Send a message via Yahoo to AndreSpence
I am have a hard time with tracking

I am VERY new to tracking and matchmoving I tried many times to match my 3d object into 3d max.
the 3d objects are slipping. Do i have a bad track wrong frame rate.

I am using my iphone 4s
the data was exported using AE6
I don't have the measurements
All images are 24fps

http://vimeo.com/74560672?utm_sourc...1MTE 1NA%3D%3D
 
Old 09-16-2013, 04:26 AM   #2
AndreSpence
PRO
portfolio
Andre Spence
Brampton, Canada
 
Join Date: Apr 2007
Posts: 67
Send a message via Yahoo to AndreSpence
Anyone have any suggestions about how to correct my problem it would really help me out a lot.
 
Old 09-16-2013, 11:44 AM   #3
kyrgr
Frequenter
portfolio
kyriakos Rissakis
None
Athens, Greece
 
Join Date: Apr 2011
Posts: 143
AE is for after effects? Be more specific and avoid panning,
there is no parallax in that shot. And the objects seem to have
been put deep inside the floor, so i suppose your scene was not
oriented properly (redifine the ground plane maybe or rotate
-10 degrees or so around x, one cannot really tell.)

Last edited by kyrgr : 09-16-2013 at 11:48 AM.
 
Old 09-16-2013, 01:20 PM   #4
AndreSpence
PRO
portfolio
Andre Spence
Brampton, Canada
 
Join Date: Apr 2007
Posts: 67
Send a message via Yahoo to AndreSpence
Some of the terms your using I'm not very familiar with. The (parallax)term is my display view at a wrong position? I hope I understood that correctly?

The objects that I have are sitting on the floor. Maybe -1 through the floor. I tried my best to position the floor. To be up front I haven't touched the floor. It's the camera I have been adjusting! I have been trying to line up the floor with the stirs in the background, trying for proper perspective.

Thank you for your feedback!
 
Old 09-16-2013, 05:14 PM   #5
kyrgr
Frequenter
portfolio
kyriakos Rissakis
None
Athens, Greece
 
Join Date: Apr 2011
Posts: 143
Our astronomist Aristarchos in 300 bc had the idea to measure the distance
of the stars from earth from the change rate of the corner between them,the observer and the center of the earth.The measure of the corner he called
Παράλλαξη(means "changing to something not very different" IMO)
From Wikipedia:
"Nearby objects have a larger parallax than more distant objects when observed from different positions, so parallax can be used to determine distances." I mean that rotating a camera does not give tracking information
about the objects' distance from the camera and leads to a poor solve.
Plus the floor is reflecting and without any markers or measurements
you cannot excpect any solid features on it. You can only enhance your
solution tracking by hand some user features. But generally those are just
thoughts, i cannot really help, i do not use Max- i supposed you exported
the camera from matchmoving software. If you are trying to imitate the
real camera movement by hand i do not know if it is possible.

Last edited by kyrgr : 09-16-2013 at 05:23 PM.
 
Old 09-20-2013, 09:13 AM   #6
AndreSpence
PRO
portfolio
Andre Spence
Brampton, Canada
 
Join Date: Apr 2007
Posts: 67
Send a message via Yahoo to AndreSpence
i know you don't know max but i was able to get the measurements of the tiles
9 x 16 inches. The track was done in matchmover. I still cannot get a correct solve.

https://vimeo.com/72420412

 
Old 09-20-2013, 03:22 PM   #7
kyrgr
Frequenter
portfolio
kyriakos Rissakis
None
Athens, Greece
 
Join Date: Apr 2011
Posts: 143
I do not see many problems( in other matchmoving software )
after all. Just mask out the distant part of the floor to avoid reflections.
This script is a max solution for the last vimeo link video.
http://www.sendspace.com/file/22flpy. I hope you can make
something out of it.




s
 
Old 09-22-2013, 07:37 AM   #8
AndreSpence
PRO
portfolio
Andre Spence
Brampton, Canada
 
Join Date: Apr 2007
Posts: 67
Send a message via Yahoo to AndreSpence
does this look to big in the scene?



this is the real photo:


it looks big to me.
 
Old 09-22-2013, 08:42 AM   #9
kyrgr
Frequenter
portfolio
kyriakos Rissakis
None
Athens, Greece
 
Join Date: Apr 2011
Posts: 143
The size is OK, actually a little smaller. The shadows seem
hard compared to the photo. And consider lowering shadow
quality-res in less crucial lights (for render time's shake).
 
Old 09-29-2013, 04:33 PM   #10
AndreSpence
PRO
portfolio
Andre Spence
Brampton, Canada
 
Join Date: Apr 2007
Posts: 67
Send a message via Yahoo to AndreSpence
Thank you for all your help, I am going to keep trying learning tracking. I really want to get a better understanding of correctly doing tracking. Here is what I worked with!

https://vimeo.com/75698318
 
Old 09-29-2013, 04:33 PM   #11
CGTalk Moderation
Lord of the posts
CGTalk Forum Leader
 
Join Date: Sep 2003
Posts: 1,066,481
Thread automatically closed

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
__________________
CGTalk Policy/Legalities
Note that as CGTalk Members, you agree to the terms and conditions of using this website.
 
Thread Closed share thread


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
CGSociety
Society of Digital Artists
www.cgsociety.org

Powered by vBulletin
Copyright 2000 - 2006,
Jelsoft Enterprises Ltd.
Minimize Ads
Forum Jump
Miscellaneous

All times are GMT. The time now is 10:35 AM.


Powered by vBulletin
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.