Sample Scene Lighting

[Vishesh Arora]

Samuel

It will be better if you could upload the Before and After JPEGs.

Vishesh Arora
3D and Motion Graphics Artist
Films Rajendra

Blog:
https://digieffects.wordpress.com

Demo Reel(3D):
https://www.youtube.com/watch?v=lHPgIJU_BR8

[Walter Soyka]

[Samuel Hall] “Is there any easy way to automatically sample changes in lighting in a file and apply those changes to a color solid?”

GenArts Sapphire has S_FlickerMatch, which can do a pretty nice job.

Alternately, you could write an expression using sampleImage() to link a parameter to a visual. See Dan Ebberts’s obscuration example [link] for inspiration.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
Creative Cow Forum Host: Live & Stage Events

[Conrad Olson]

If the camera doesn’t move too much try this:

Duplicate your footage and freeze frame one copy.

Blur both layers a lot and the same amount.

Switch the blending mode to subtract. You now have the difference between the frame you froze on and the current frame. You might need to put your project into 32 bit to allow negative vlaues.

Precomp these two layers and place the precomp above the solid. Set it to add.

You can adjust the blur amount. Smaller blur will give you more localised differences but will fail if the movement between the two frames is too much. Bigger blur will just give you a more general difference in lighting.

If you do the same thing but set the first blend mode to divide rather than subtract and the second to multiply instead of add you can match colour rather than brightness.

—

conradolson.com

[Ross Shain]

mocha Pro has the ability to do auto luminance matching. While this is capability is found in the Remove Module, you could potentially use it for image insertions as well.

Best,
Ross

Ross Shain
Imagineer Systems
http://www.imagineersystems.com