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AE CS6 - RAW - Strange Phenomenon within 360° footage

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David Haneke
AE CS6 - RAW - Strange Phenomenon within 360° footage
on Apr 3, 2016 at 6:50:38 pm

Dear Reader,

A strange phenomenon occurs within AE CS6 and an image sequence.
I have a 360° recording (10 camera‘s rotated -45° - alined horizontally) of a museum space in Berlin I stitch to create one panorama shot.
Footage is recorded as .dng files. RAW

When imported and interpreted in Camera Raw, they are just close to each other of course, even when using one preset, because the different cameras deliver different values.
After interpretation (still in CR) over and over again, stitched areas are completely invisible.

But when I set my cursor further in the timeline, some camera‘s change significantly in color and brightness while other stitchings stay perfect.
How is that possible within one image sequence??

Any light change within the space would be visible through all the cameras accordingly...
And the light did not change significantly during the 10min scene.
And I did not add any effects on the clips within AE yet - except "timecode" and "Mesh Warp"
Work at 16bit

Does anyone have an idea what that could be?

Reactions are very appreciated - we kind of stuck...

Thanx a lot
best regards David


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Tudor "Ted" Jelescu
Re: AE CS6 - RAW - Strange Phenomenon within 360° footage
on Apr 4, 2016 at 11:44:58 am

If you shot this with GoPro cameras or similar, it is possible to have exposure change due to the way the camera tries to interpret what it sees and any small change may influence that. It's a issue mostly encountered in time lapse sequences but it can occur in a regular shot as well. Running the footage through something like GBDeflicker (http://www.granitebaysoftware.com/products/productgbd.aspx) may help.

Tudor "Ted" Jelescu
Senior VFX Artist


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David Haneke
Re: AE CS6 - RAW - Strange Phenomenon within 360° footage
on Apr 7, 2016 at 10:17:18 pm

Thank you Ted,

It was the Omnicam by the HHI in Berlin, which they use for several years and projects now. Seems that they did not have that issue before. It contains 10 cams and 10 mirrors.
I ill investigate which cameras are built in.

I did render different parts to see if there would be some flickering, as that was the only reason we could think of. There was no flickering at all.

Any other possibility?

Cheers

David Haneke

http://www.davidhaneke.com
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David Haneke
Re: AE CS6 - RAW - Strange Phenomenon within 360° footage
on Apr 7, 2016 at 10:23:01 pm

Thank you Ted,

It was the Omnicam by the HHI in Berlin, which they use for several years and projects now. Seems that they did not have that issue before. It contains 10 cams and 10 mirrors.
I ill investigate which cameras are built in.

I did render different parts to see if there would be some flickering, as that was the only reason we could think of. There was no flickering at all.

Any other idea?


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