Working with Black Backgrounds on images

SachaB

Got a major HoloLens contract! The client uses images with a lot of Black in them and it cannot be transparent. My question is if I set the R or G or B to 1 on those pixels so RGB would be 1,0,0 say.
Would RGB 1,0,0 be transparent or opaque?
1 of 255.
Will this show in the Emulator?
I really wish I could see the room in the emulator, blank black is hard to work with. Wireframe would be great without having to click.
And if the emulator worked with my Oculus Rift would be amazing. (without going through Unity)

Jarrod1937

Black is transparent, no way around that other than to not use black. However, our eyes do interesting things when given the right amount of contrast, black as transparent may not be an issue. Are you able to give more specifics?
As for seeing the wireframe in the emulator, follow the spatial tutorials for unity. You can also apply a custom shader to the mesh.

HoloSheep

@SachaB because Holograms are created with "additive light" you are not going to be able to project darkness onto something bright.

So depending on your environment, an RGB 1,1,1 value would not be totally transparent but not supper opaque either. Put another way well lit lightly colored items would show through those areas. However, in dimly lit environments or against dark backgrounds the neutral density filtering effect of the HoloLens lens and a dark grey hologram section can be reasonably convincing.

Aside: RGB 1,1,1 value is a very dark grey without a color tint, where as RGB 1,0,0 is a very dark red