Hi, I'm having some issues when using a background image in a USD camera. I will try to explain what I'm currently doing, and hopefully someone will have the correct answer...

I'm using an OCIO config (slightly modified Academy Color Encoding System - Studio Config with some custom rules)
the rules I'm adding are regex based and are really very basic: find patterns like srgb or exr extension, stuff like that. The rules are indeed working fine.
For all my textures everything is being handled by the File Color Space parameter in the mtlX Image nodes
I'm using the ACES 1.0 - SDR Video view transform (which as far as I know is the recommended one to avoid clamping of the highlights and to interpret the lights and shaders in a more "realistic" way)

Up to here, everything works perfectly: my renders look correct and all that jazz. But whenever I try to load a background image in the USD camera, whenever I switch to the ACES 1.0 - SDR Video view transform, the background also gets affected and becomes darker. I would like the background image to be unaffected by the view transform. I thought that setting a rule for the backplate and setting the color profile to sRGB - Display would be enough to avoid this, but unfortunately, that is not working. If I switch to un-tone-mapped, the background colors look correct, but then my highlights are not correctly compressed.

Does anyone know if there's a way to use the ACES 1.0 - SDR Video view transform without affecting the background image?

I don't want the plate to be rendered, it is just a reference for matching the lighting of the backplate, but having it darkened by the view transform is almost useless to really match the intensity and saturation of the lights.

Any help would be really appreciated.

Btw, I'm using Houdini 20.5