Exclude an area in virtual set | Forum

Exclude an area in virtual set from being keyed

@Eiffert: I am using a Tracked Cam project with 2024.3.0 Broadcast DE . I am using a desk for a news anchor, and I need to create a reflection off the green table top. I have placed a reflective surface on top of the green table, but because it is reflctive, it is reflecting also some of my green screen background, which kills the reflection effect. It is producing inconsistnt results.

Is there a way or marking out an area on that table top, a mask, correspondng to the reflective surface , and excluding this area from being keyed ?

Linford

Eifert@Aximmetry

Hi,

You can achieve this using the Window Model in Normal Mask Mode. More information can be found here: https://aximmetry.com/learn/virtual-production-workflow/green-screen-production/tracked-camera-workflow/studio-control-panel/#window-model-in-normal-mask-mode

Note that this approach will also remove the Despill of the keyer. This means it may result in a different color compared to the keyed areas if the despill parameter is used in the keyer.
Additionally, in the next version of Aximmetry (2025.1.0), this feature will be renamed to "Holdout" and will include some additional parameters.

Warmest regards,

Linford

@Eiffert: Thanks for the response . The window model in window mask mode works for rectangular areas. It would be really good for the areas of interest that are not to be keyed out, if the user could define and draw out the perimeters of the shapes that are not rectangular. For example a chair - Possibly with a stylus or the mouse . Maybe for future consideration ?

TwentyStudios

@Linford: What you’re describing is using a custom 3D mesh for a holdout mask. Drawing that with a stylus wouldn’t be practical since it’s a volumetric object and not just a 2D shape. You can already import a 3D model of your chair and use that as an input for the holdout mask with some compound editing.

Exclude an area in virtual set from being keyed

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