Looking to auto crop black from a video input. As in remove letter boxed blacks from a video input. Can anyone point me to the nodes I should be working with?
I was thinking do some edge detection but didn't see how to get the value of where the edge is.
Find find first non black pixel from each edge of the input. Just not sure what node would test specific pixels of a texture.
I need to crop the area not just make it transparent, also need to have some Data that will tell me if it is cropping or not.
Also looking to find a predefined marker on the video input. This might also be able to use pre-defined cropping styles needed for each video feed.
Thanks.
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THE FORUMS ARE CLOSED!
Please join our discord server HERE!! << click me
We are shutting our Ventuz Forum, but don't worry, it will all be archived for you to search in if you have a query. From now on, please add all your comments, questions or observations into our Discord Server
Thanks for the great time - see you on discord!!
Dee, Karol, Daniel and the whoooole Product and Support team!
Auto Crop Black from Live Video?
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- shermanpat
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- Joined: 21 Feb 2012, 22:03
- Location: SLC Ut USA
Auto Crop Black from Live Video?
-Sherman
Meru Interactive
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Re: Auto Crop Black from Live Video?
I think that is something Ventuz4 will let you do with a small Shader. I saw a shader example a while back - I think Karol posted it - that showed live video being accessed and processed in a Shader.
- shermanpat
- Posts: 122
- Joined: 21 Feb 2012, 22:03
- Location: SLC Ut USA
Re: Auto Crop Black from Live Video?
*goes digging around in karols posts*
-Sherman
Meru Interactive
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Re: Auto Crop Black from Live Video?
not the best...but maybe this?
greetz
christian
greetz
christian
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Re: Auto Crop Black from Live Video?
oh...i misunderstood your request...
for this i dont have a solution
greetz
christian
for this i dont have a solution
greetz
christian
Re: Auto Crop Black from Live Video?
Fot this, you will have to write a shader at the very least. You are going to have to do image input processing, i.e. feed the input into a texture, then run a shader on it to detect large areas close to the edge that are black, then determine how far they go. Not trivial to say the least. Nodes alone will not get you there, I am afraid.
- shermanpat
- Posts: 122
- Joined: 21 Feb 2012, 22:03
- Location: SLC Ut USA
Re: Auto Crop Black from Live Video?
Thanks for the tips. I think it will be a while before i can tackle the shader stuff.
-Sherman
Meru Interactive
Meru Interactive