You must log in or register to comment.
I only see the red when its small, in the thumbnail its red, but when I open the image its very black and white.
The white has more red in it than green and blue, so that’s probably the cause of the illusion.
Do I not see the color because I’m protan or what? Does that even make sense for optical illusions?
And what color does white have?
FFFCFCF9
deleted by creator
Yeah. Shouldn’t this work with e.g. a picture of a tree as well?
deleted by creator
Hammer time?
indeed. I hate ads. Even more forced ads of liquid sugar. Would have loved to see that red tree if only to prove that its not about the familiarity to the item.
Burn the witch!
I only see red if I take my contacts out and hold my phone really far away, but then its all one blurry mess.
If you zoom in to see that it’s black and white, and then zoom back out again, it stays black and white. But if you look away for a bit to forget, maybe change the angle you’re looking at it, it turns red again.
For me zooming out changes it back to red.
I think it probably depends a bit on the color persistence effect. Like when you stare at something then look away, you see the opposite color. This effect probably requires the parts of your eyes that were looking at cyan to move over the white area and create red. So if you look at it without moving your eyes, it doesn’t work
I need to grab a color dropper but I am sensing a little warmth from the White even when I zoom in
This is a screenshot of it zoomed in…
You tell me if the white looks warm
That doesn’t change anything but yes it does look a hair warm.
https://www.color-hex.com/color/fffcf9
Looks warmer than #ffffffff that’s for sure
There’s no disputing our minds are filling in red because we see a Coca-Cola can. But it does appear to me that there is a very very light thumb on the scale to make it easier
Top comment explains it. It’s because of the cyan that it looks red. It’s the complementary primary color
I don’t know why you felt the need to send this when like 20 comments have repeated it and this happened days ago but ok lol
our minds are filling in red because we see a Coca-Cola can
Our minds are filling in red because of the cyan
I think what we actually need is someone to take a picture of their screen with a microscope while the image is zoomed out.
Based on some comments I’ve seen, it seems likely this is just an artifact of how the red/green/blue pixel layouts work when drawing the edges of white things.
Edit: I don’t have something to check the actual display pixels, but I realized I could just rotate the image and see if the colors change, which they don’t. So this definitely seems like more of a white balance effect, similar to that old Gold/Blue Dress meme.
You can use a color picker*, and unlike the gold/blue dress meme we are all looking at the same image and don’t have to determine one singular source vs. shared ones that have changed due to screenshotting/compressing/people just messing with folks
You can’t use a color picker see color fringing due to subpixel rendering. (There’s tons of info about this for font rendering). Your display doesn’t map pixels 1-to-1 in most cases. But like I said in my edit, I’m fairly sure that part is irrelevant here.
The blue/gold dress was not related to screenshotting and compression. People were arguing about the color even when looking at the exact same image. It all depends on which color temperature the dress was lit with. Noone can know for sure, and your brain just picks one (maybe depending on the room you’re in).
It’s the same sort of deal as those rotating optical illusions. It’s possible to see it both ways, but your brain usually picks one and it’s hard to switch.
Screenshotting, compression, people screwing with people, different monitors, different phones, etc. all contributed to the confusion ultimately. It’s not accurate to say we were all looking at the same image with the dress. But yet those visual/mental phenomenons are also real.
I wasn’t saying everyone was looking at the same image. I’m saying the optical illusion still works when using a single image.
Sure but I never disputed that. I’m saying this effects are real and there was some confusion due to the above.
Maybe you also try replacing cyan to magenta and see what happens. Imo the warmth of white does not do anything much
Color dropper shows there is full red and blue/green are pulled back. It’s slight, but it’s there. Didn’t say it did much but clearly it was enough for me to notice lol
FFFCFCF9
I’m getting no hits for that do you mean fffcf9?
Yes. The first two symbols got interpreted as markdown
Is this because our brains have been programmed to see Coca Cola can as red? Or does it have something to do with the way the black and white boxes are organized? (I.e. if it were a sprite can, it would still be red)
It’s effectively your brain doing automatic white balance, it sees everything being tinted cyan so it just sorta subtracts cyan from the area, which results in white being reddish
you can do this physically (by tiring out the colour-sensing cells in your eyes) if you stare at a colour for about 30 seconds then quickly look at a white surface, you should see the inverse of the first colour.
I think it’s a bit of both. The light blue color used is so called “complement color”, meaning it’s exactly the opposite on the color wheel to the Coca Cola red. Black and white pattern suggests to our brain to play with contrast. And of course we all know Coca Cola from all the marketing.
Btw, After staring at it for a while I can kinda switch between red and white at will. Anyone else?
At the size it is on my phone screen it looks very red. Zooming in makes it look like the red switches to white.
Interesting :) And yes, for me it also became easy to switch once I was aware of the truth of what I was looking at.
If you look directly at the can you can see it as white, but if you look elsewhere and the can is only in your peripheral vision it seems to always be interpreted as red.
Btw, After staring at it for a while I can kinda switch between red and white at will. Anyone else?
No, that doesn’t seem to work for me, but after messing with zooming in, I can absolutely see it’s white if I’m all the way zoomed in on the black and white pixels in the can, and then as I slowly zoom out, there’s a specific moment when there’s enough of the surrounding blue that the can suddenly turns red.
The can remains black and white in my perception as long as I’m sufficiently zoomed in on it without the background. It’s a pretty neat effect.
The cyan is the one playing the trick. I can see the black and white nature without zooming when focusing on the logo or something. Sometimes it randomly changes from b/w to red
Someone did a color swap and the can looks blue when the cyan pixels are instead yellow
How come this comment isn’t clickable in the app, and you have to open a browser to see it?
Depends on the Lemmy app you use and your phone preferences for app opening certain links in different apps ( e.g. PayPal specific links may open in the PayPal app)
Thanks, I’m in voyager on Android. In the app settings, I can choose to open the link either “with default browser” or “in app”.
Even if it is set to “in app”, the app renders a browser window instead of just taking me to that comment in the thread.
Weird.
Try restarting your app. That can happen if an API request fails (or if you Lemmy instance isn’t federated with the target instance)
Ah this is a good point too, unfederated links could do it since the app wouldn’t know how to open it, I use sync and links usually work but occasionally will open in the browser.
I have myopia so if I place the phone far from my face I can’t see that it is even a can… I still see a little bit of a red area there.
Oh weird, I assume this is just because the white is relatively red compared to the cyan, right? As in if you took any image and coloured it in the same way then it would also look red.
Hand doesn’t look red tho
The hand has cyan in it
Brain uses expectations to decide what to fill perception with. you don’t expect hands to be the same red tone as cola cans.
I think it’s also the amount of blue overlay. If you zoom way in, the cola can has much larger chunks of uninterrupted white, whereas the hand has a lot more blue interspersed.
Fair point, well observed!
Yeah, there seems to be a lot more going on here than just marketing. If you mask the logo, the red still works. I believe it has to do with the combinations of white/black, white/cyan, black/cyan and the relative size of the blocks to produce a red hue through complimentary color persistence or whatever it’s called.
Fucking pattern recognition…
Hm… when I glance at it, yeah I see the white is very very light pink. But once I focus on the details, I see no trace of red.
I don’t even see that. My brain must be broken.
same… just white for me. maybe because I read the title first. idk
Great lectures on this kind of thing:
Nonsense. My phone screen uses red, green, and blue to make up each pixel. The white pixels have their red component all the way at full brightness. Therefore there is a lot of red in the picture.
You could also see this by opening up the image and looking at the red channel which would not be completely black.
Texts on computers is made this way, so use a magnifying glass on black white text in a word document (for example) and you’ll see lots of colors. zoom in using the computer and you will still just see black/white.
So that’s why I can’t print greyscale documents when my yellow ink is too low!
Ha ha nah thats because all (color) printers also print a unique pattern with yellow, so that anything from your printer can be traced back to it
Can plz anyone find a link (am at home with wrecked right arm)?
I just tried printing this image but it says my magenta is too low 🤔
It’s not marketing, just colour theory. The same idea has been used by painters for ages.
Its the second Coca Cola TM post ive seen since I joined lemmy.
The other one was yesterday.
This site has no protection against marketing aside from moderator action (and in this case OP is a mod). I’m not certain OP chose a coke can for that image or whether this was simply the first version of that illusion that OP has seen
I wonder if prolific posters are approached by advertisers. Is Lemmy big enough for them to bother?
It is when you use cova cola instead of, lolipop, santa, flag, flower or some other red object.
Nah, it’s still colour theory. Now it’s yellow, magic.
Jokes on you I zoomed in and out on the original and now the can appears white no matter what.
As a video editor, fuck Adobe lol
I’m right there with you, I just downloaded the first app I thought might let me shift hue.
I installed GIMP on my Android phone for changing aspect ratio of photos, but used it for hue, too
didn’t know it was on phone, thanks for the tip!
No judgment for using the tool you used. I just always feel a need to say fuck Adobe lol. Recently got our production team fully in resolve, but unfortunately there is no suitable replacement for adobe audio enhance tool yet. Hoping resolve’s voice isolation tool can eventually supplant it.
Any of my family members of the last 500 generations would be as awestruck as I am when they zoomed in to check if you’re lying. Unadulteratedly and humbly: WOW.
That’s so weird. You can stare at a pixel and go “yep that’s red”. Zoom in, still red. Zoom more, BOOM IT’S BLACK!
The “red” parts are white, but yeah it’s interesting
I am confident that is not correct, but every time I zoom in to test it, my brain explodes and I can’t tell.
I’m also lost. Because logically it should be the white, but I see a red and white striped midsection of the train and a red and white flecked can, so I think it must be coming from the black pixels.
Why is my brain making the train stripes red? I don’t know what color they normally are, which I assumed was the mechanism behind the coke can illusion.
Because our brains interpret colours and shading relative to their surroundings. That specific blue is on the opposite side of the colour wheel from red, so that relative lack of blue can be interpreted by our brains as red.
Remember that white is all colours present, so white next to white will have more red than white next to blue.
You’d get a similar effect if you stare at a bright blue version of the can for a while and then look at a blank white page or close your eyes. The after image isn’t the same colour as the thing you were staring at, it’s the inverse of that colour.
