logo

Live Production Software Forums


Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Options
Go to last post Go to first unread
doggy  
#1 Posted : Sunday, June 29, 2014 7:09:46 AM(UTC)
doggy

Rank: Advanced Member

Groups: Registered
Joined: 12/27/2012(UTC)
Posts: 875
Belgium
Location: Belgium

Thanks: 55 times
Was thanked: 151 time(s) in 135 post(s)
Please help as I am confused.

Although I found a nice basic UV map that can be resized and/or transformed to be used in a virtual studio I don't manage to create one myself
as I understand it is made up of a red and green layer (gradient) and adding (mode) them together I do visually get the exact same visually as the one I found online that works.
BUT... that one always give a distorted view (vertical lines , horizontally half the size approx basically a total mess

what is the trick please

I did notice that some virtual sets that use UV maps seems to use a different standard one compared to the one used in vMix.

Inquiring minds like to know
admin  
#2 Posted : Sunday, June 29, 2014 8:06:01 AM(UTC)
admin

Rank: Administration

Groups: Administrators
Joined: 1/13/2010(UTC)
Posts: 3,950
Man
Location: Gold Coast, Australia

Was thanked: 2001 time(s) in 938 post(s)
See below:

http://www.vmix.com.au/k...ual-set-specification-10

UV Map PNG files need to be 64bit so the red/green colours can range from 0 to 65535
thanks 3 users thanked admin for this useful post.
doggy on 6/29/2014(UTC), Thremir on 6/29/2014(UTC), claudeir on 11/30/2018(UTC)
doggy  
#3 Posted : Sunday, June 29, 2014 9:35:34 AM(UTC)
doggy

Rank: Advanced Member

Groups: Registered
Joined: 12/27/2012(UTC)
Posts: 875
Belgium
Location: Belgium

Thanks: 55 times
Was thanked: 151 time(s) in 135 post(s)
ok, that works , but my edges (when video is panning are distorded )
Imagine this i where the gamma corrected comes into play , any hints please
Thanks
admin  
#4 Posted : Sunday, June 29, 2014 9:47:52 AM(UTC)
admin

Rank: Administration

Groups: Administrators
Joined: 1/13/2010(UTC)
Posts: 3,950
Man
Location: Gold Coast, Australia

Was thanked: 2001 time(s) in 938 post(s)
If you can provide a screenshot it will make it easier to see what might be happening.
doggy  
#5 Posted : Sunday, June 29, 2014 10:10:31 AM(UTC)
doggy

Rank: Advanced Member

Groups: Registered
Joined: 12/27/2012(UTC)
Posts: 875
Belgium
Location: Belgium

Thanks: 55 times
Was thanked: 151 time(s) in 135 post(s)
sending clip by email as it becomes most obvious (panning)
admin  
#6 Posted : Sunday, June 29, 2014 10:16:19 PM(UTC)
admin

Rank: Administration

Groups: Administrators
Joined: 1/13/2010(UTC)
Posts: 3,950
Man
Location: Gold Coast, Australia

Was thanked: 2001 time(s) in 938 post(s)
There appears to be a problem with your gradients.
They start out 0,1,2,3 etc as they should but then go back to 0 again towards the start.

They need to evenly increment across the entire image for it to look correct.
doggy  
#7 Posted : Monday, June 30, 2014 12:39:00 PM(UTC)
doggy

Rank: Advanced Member

Groups: Registered
Joined: 12/27/2012(UTC)
Posts: 875
Belgium
Location: Belgium

Thanks: 55 times
Was thanked: 151 time(s) in 135 post(s)
Thanks Martin and I understand ... just dont seem to manage it or maybe gradients aren't correct on PS ;-)
admin  
#8 Posted : Friday, July 4, 2014 4:21:31 AM(UTC)
admin

Rank: Administration

Groups: Administrators
Joined: 1/13/2010(UTC)
Posts: 3,950
Man
Location: Gold Coast, Australia

Was thanked: 2001 time(s) in 938 post(s)
Here is a sample set with a HD 64bit UV Map:

http://www.vmix.com.au/download/uvmapsample.zip

You can try importing the image into photoshop, moving it around and saving it out
again to see if photoshop preserves it correctly.

Regards,

Martin
vMix
doggy  
#9 Posted : Friday, July 4, 2014 4:36:26 AM(UTC)
doggy

Rank: Advanced Member

Groups: Registered
Joined: 12/27/2012(UTC)
Posts: 875
Belgium
Location: Belgium

Thanks: 55 times
Was thanked: 151 time(s) in 135 post(s)
Thank you Martin

My problem is not being able to alter a UV map (as I found one online also and see my GoPro lens correction altering I did in this Post

repositioning , changing its shape and what not all works when starting from an example like yours and than saving it

I was trying to make one from scratch . Got close , just the edges ;-)

Tried some free to test virtual sets , just had to replace their uv map with 'ours' and 'translate' the PSD file to the vMix xml :-)
claudeir  
#10 Posted : Friday, November 30, 2018 1:09:54 PM(UTC)
claudeir

Rank: Newbie

Groups: Registered
Joined: 2/2/2018(UTC)
Posts: 4
Location: Foz do Iguaçu

Thanks: 1 times
Hi friends, thanks so much for your uvmap sample, Im studying that.

Please, could you send some tutorial to teach me how to create a new one with
all size that I can ?

Thanks so much !!!
Users browsing this topic
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.