Which image effect is this?

Question

This is a screenshot from RE7. I have once seen the same image effect in Unity, but I don't remember the name:

I'm not talking about AA or DOF here, I mean this grainy / greenish thing, I don't know how to describe it...

At first I thought the name was something like "Anisotrophic filtering", but that didn't bring up anything that looked like it.

Can anybody tell me the name of the effect that I see here?

Edit: It can be seen in the start screen of this video, too: https://www.youtube.com/embed/aaN3MNb9ij0?feature=oembed

Both screenshots look pretty similar to me, so I guess it's the same effect?

Edit 2:

The pixels seem to shift into red / blue the closer they get to the edge of the screens.

I have drawn red arrows to region where this effect is very visible to me. These pixels appear as "shifted" to me.

I think this effect is more visible at the edge of the screen.

Thank you.

Answer 1

I'm really not sure what you are referring to, as I don't see any effect that looks grainy or greenish in the screenshots or clips (other than a few green objects on the desk, but I'm sure that's not what you're referring to).

As far as effects I see:

From the RE7 screenshot

• The only obvious visual effect in the RE screenshot (aside from DOF) is a blood smear in the top-left corner of the image (which is red and not grainy).

From the Unity HQ Abandoned School video:

• Bloom - Creates a glow around bright parts of the image; can also be combined with a lens dirt texture to create the look of a dirty lens. Bloom is visible around the sun/sky in the external shots, and I think there's lens dirt in the shot of the desk with lamp, though they are also using a particle effect to simulate dust in the air. There's also some mild lens dirt or lens flare in a few other shots
• Chromatic aberration: A few shots might have very mild chromatic aberration. It's hard to describe this effect and I suggest doing an image search for it.
• Color grading: Adjusts the color tone of the image, such as saturation, tint, and contrast. Some shots look like they might use color grading to achieve a more stylized look (e.g. adding a little sepia, reducing black levels).
• Vignette: darkens the edges of the image. I believe this effect is applied uniformly on every shot.

Regarding the green, these are the parts of the desk image that Photoshop thinks have some green (determined by increasing the saturation "Greens" in the Hue/Saturation window by 100).

Here's the image with the same range of green completely desaturated. On my calibrated monitor the difference from the original image is barely noticeable. If it still looks very green to you, that suggests to me that your monitor isn't calibrated correctly.

As for the RE7 image, if I put it into Photoshop and raise the saturation of "greens" by 100, the image doesn't change at all; in other words, in contains no green at all.

EDIT: Here's an example of Chromatic Aberration

Answer 2

Well, I'll share my opinion with you. I am not sure where you are pointing exactly but from the comments and your post I feel like slight hue rotation effect could give you this kind of results.