#color vision

[jpitha]

Color Me Surprised.

Human vision is hacks upon hacks upon hacks. Forget about how our brains just make wild guesses about things we see, or how there are whole parts of your vision that your brain can't see and just does "content aware fill" on it, or how your peripheral vision isn't nearly as good as you think it is.

Our brains just make up colors because we don't like to see two colors next to each other.

Magenta doesn't exist.

****

“Ugh, what is going on?” The Gren moved to cover their eyes as they staggered back, their reverse articulated legs unsteady.

“What? What is it? What’s wrong Peni’tam?” Jalisa stared at her friend as they moved back, their 2 pairs of eyes squeezed tightly shut.

“That… that thing. It hurts to look at!“ Peni’tam finall turned away and with their back to it, opened their eyes. They looked down at Jalisa. “It doesn’t hurt for you to look at? Is it some kind of human weapon?”

Jalisa peered around Pani’tam. Behind her, on the landing platform was a starship. It was small as starships go, likely only holding 4 or 5 people. With a Flip drive, you didn’t really need a large spacecraft for anything. Most destinations were no more than two or three days away, but humans tended to build large anyway. No reason not to when space is nearly limitless. Interdiction ship probably. Military, or at least formerly military.

It was small and sleek, with very few protrusions. Currently sitting on spindly landing legs, it almost looked like an insect.

It was also bright magenta.

“It’s just a ship Peni’tam. The color is a little unusual, but humans tend to paint their ships wild colors anyway. It’s got a bit of a dazzle camo pattern, made up in two or three shades of magenta.”

“Magenta? What’s that?” Now that Peni’tam wasn’t facing the ship they were much more steady on their feet.

“It’s just a color. Like, a really bright pinky purple?” Jalisa looked down at her pad. “Here, let me see if it’s emitting something.” She touched a few points and ran a scan. “Pani’tam, it’s cold. Even the reactor is off. It must be here for a refit.”

Pani’tam turned again and immediately winced. “Ow! No, something is up. That ship hurts to look at. I don’t mean like figuratively, I mean, literally it is painful. It is doing something.”

“Well, let’s step away from it then. We can find another way to the cafe. I just wanted to pass by the pads because I like to look at the ships.” Jalisa said, wistfully.

They went to the cafe by circling around the station past the gymnasium. Inside, Jalisa saw people running and lifting weights that seemed almost comically tiny until she looked over at the sign over the entrance.

OPERATING AT THREE GEE TODAY. EXERCISE CAUTIOUSLY.

She rolled her eyes. Of course the gym nuts would find a way to use the gravity generators to make the workouts more intense.

At the cafe, Jalisa and Peni’tam got their drinks and sat down at a wide, long table. “I just can’t believe that color doesn’t hurt you.” Pani’tam took a sip of their tea. “Your vision must be completely different than ours.”

Another human at the table heard their conversation and turned. “Oh, you saw the Variegated Elegy?”

“The little magenta ship? Yeah, Peni’tam here-“ Jalisa gestured at her friend “-got a massive headache when she tried to look at it.”

The human nodded. “I’m not surprised. It’s an old interdiction ship, originally designed to strike deep into Gren territory during the war. Now that the war is over, it’s here to be refitted into a yacht, and probably repainted too.”

“Oh really? That’s too bad. The magenta dazzle camo is so interesting.” Jalisa sipped her coffee and looked at the human. She was tall, with close cropped hair on one side, and the rest was swept up almost into a dark asymmetric pompadour. She was wearing a tailored uniform without any indicators of rank and just two silver pips on her left breast. She had a scar along her right cheek as well. She looked very rakish, and Jalisa had to look away quickly.

The human laughed. “It’s pretty neat isn’t it? Unfortunately, the Confederation races can’t process magenta. For some it just looks like a very odd blue, others see a very odd red. A few races like the Gren with very accurate color reproduction get headaches and it causes them pain. The color was chosen on purpose for that particular ship.”

“A color… hurts? Also I’m sorry, I didn’t catch your name.”

The woman winks. “I didn’t throw it. You can call me Tyler.”

Jalisa blushes just a bit. “Hi Tyler, I’m Jalisa.”

Tyler nods. “Works over in HVAC with Pam and Lan’urian? Nice to meetcha.”

How did she know that? Tyler continues. “Anyway. Yeah, for the Gren, when they see magenta they try and process it, but since the wavelength for blue will never be with the wavelength for red, the color can’t really exist.”

“But we see it?” Her coffee forgotten, Jalisa leans forward.

Tyler laughs. “That’s because our eyes are hacks upon hacks upon hacks. Half the things we ‘see’ aren’t real. Our brains just invent magenta when we put red and blue next to each other. We learned early in the war about Gren vision processing and were able to use it to our advantage. Now that the war’s over, we’re retiring the pain job. Gotta be good members of the Confederation after all.” Tyler rips off a sharp - though sarcastic - salute.

“So, the color of the ship itself is a weapon?” Peni’tam said, with a note of amazement in their voice.

“Yup! Pretty neat right? A weapon with no power and no ammunition and still causes nearly incapacitating pain if a Gren doesn’t look away.”

Jalisa looks at Tyler more closely. She seems so effortlessly confident. “How do you know so much about this, Tyler?”

Tyler shrugs. “Oh, it’s my ship. In the war I was an Intelligence Collection Agent and I ran the Variegated with a small tight crew.”

Jalisa nearly chokes on her tea. “You’re a spy?”

“Was a spy. War’s over, so we don’t need spy’s anymore, right?” Tyler winked again. Jalisa wasn’t sure if Peni’tam caught the gesture or knew what it meant. A wink was very situational and could mean lots of things. Tyler tossed back the rest of her coffee. “Anyway, I’m here for a few more weeks while the refit takes place.” She stands and looks down at Jalisa. “I’m free tonight. Call me, we’ll get dinner.” And without another word, she turns and walks out of the cafe.

After she left, Peni’tam stares at Jalisa. “You aren’t going to go to dinner with her are you?”

“And why not, Peni’tam?”

“She’s a spy! She spied on us during the war!” Peni’tam’s grey fur ripples and her mouthparts clack with stress.

“The war is over Peni’tam. Everyone on both sides fought it. I’m sure you had plenty of your own spies.”

Peni’tam shakes their head. The fur whooshes back and forth while they do it. “She’s so… cocky and self-assured. She practically made your date invitation a command.”

Jalisa blushed again. “I know. It was pretty cool.”

[angelpointe]

According to a random colorblindness filter site online , this is what Ena looks like for me , I’m Blue Yellow Color deficient ( Tritanomaly )

Compared to the original :

Disclaimer that these sites are not always accurate , but personally I can not see much of a difference

[exquisite-peculiarity]

Share please, for increased sample size!!

[marlynnofmany]

Oh hey, fun fact I just remembered: at the edges of your vision, you can see motion but not color.

Seems wrong, doesn’t it? There’s no black-and-white area to the sides. But that’s because your brain guesses and fills it in.

Here’s the test:

Get some squares of colored paper, or anything else that’s all the same size but different colors. Felt pens, DVD cases, whatever. Pick one without looking (or have a friend do it for you.)

Look straight forward, holding the thing out to the side and behind you, so you can’t quite see it yet. Move it forward until you do. Wiggle as necessary.

When you first see something moving, you won’t be able to say what color it is, and it will be maddening. You can guess! But it’s just a guess! Then when you look, you may be completely wrong!

It’s a fun game for parties, and blowing your friends’ minds.

[o-avosetta]

Recently replayed Death of the Outsider in black-and-white mode and have been thinking about it from a broad accessibility and experience design perspective.

It is not true black-and-white, btw, because the following still use colors: paused menu screens (full-color Billie portrait), cutscenes (some reddish and brown tones), health and magic bars (red and blue), and Foresight vision (yellow and light blue). Those are the ones I remember, anyway. I'd be interested in getting the thoughts of someone with achromatopsia re: how those things look to them.

To my surprise, the environment ended up feeling more immersive, or maybe just immersive in a different way. Karnaca in color has me marvelling at the overall scene — the light of near-dusk on the buildings, the lushness of Shan Yun's townhouse — but in black and white, I found myself looking at the little things. Color cues I had been accustomed to, like the red of a valve wheel or the green of a sleep dart, were missing. So, I had to really look at everything around me if I wanted to pick anything up or make certain objects move. The silver outline that tells you when something is manipulable also just looks cleaner against monochrome.

Foresight-marked bonecharms are still blinding in black and white, but I now noticed their sparkle-and-smoke aura more. I also found myself paying more attention to the sound and tactile cues of their presence. The twin-bladed knife ticks and clicks, btw — something I didn't remember at all from my previous playthroughs.

The environment without color became one of structure and shadow. Enemies and civilians alike were harder to see, adding some challenge to the game. I learned to see guard ranks based on the way the guards carried themselves and the shapes of their hats, rather than just by the colors of their uniforms — officers stand up straighter and tend to be leaner, which signals their greater discipline, maybe. (Except for that one guy at the desk across the security office of Michaels Bank. Guy remained out cold when the man in the booth raised the alarm.)

Another surprise was that it was actually a much calmer experience overall. I didn't realize how much of a stimulus color can be until it was taken away, and I think my brain was grateful. But it also made my Billie feel a lot more clinical in picking her way through Karnaca, even as I went for low chaos with zero kills.

I've always found DotO to be the most depressing of the three games because Billie is just so alone. No Samuel, no Hound Pits crew, No Emily/Corvo or Sokolov to bounce thoughts off of, no one joining her on the Wale except Daud. This time, that sort of comfortable detachment I developed in black-and-white made Billie's aloneness comfortable as well.

In turn, that made the emotional moments that much starker. Without the red of Daud's vest pulling at my gaze, for instance, I could really focus on the weariness of his face during that conversation before the bank job, as well as in the game's final scenes. (Cheers for Rosario Dawson and Michael Madsen, as always.)

I even ended up with a new headcanon while I played: that Billie in this black-and-white run is color-blind. It definitely heightens the impact that getting the Void eye has on her, especially when she uses Foresight.

Why would anyone want to play these games in black-and-white? I wanted to know, when I first saw the option years ago. It's really something else, guys. It actually made the game new again. Maybe when I'm not supposed to be working, I'll give the full Dishonored 2 a black-and-white run and see how it goes.

[ahedderick]

Color vision

   Good GRIEF I have HAD it with school assignments with colored maps! The boy is sitting trying to look at a map of world religions and color his own as a study guide. However, as a ‘deuteran’, what he sees is more like the lower bar, here. (Normal color vision is the top bar.) While he can distinguish red from green if they are highly saturated, like ‘fire-engine’ red, he definitely cannot see the muted colors on the assignment he has today.

   I know I’ve posted about this before! But color blindness / deficient vision is, percentage-wise, NOT that uncommon. Almost ANY classroom is going to have at least one student with this. And virtually EVERY single teacher acts confused when we bring it up, like they’ve never had to work around this before. And then they give assignments where color vision is required ANYWAY!!

   *Charlie Brown AAAUGH! moment*

[joen-lenawley]

I generally have pretty good color vision except for green

Like I thought our guest bedroom walls were yellow for the longest time

It looks off-color in the pic I took, so I’m not including a pic

My attempt to color match it gave me E4EBCC

I also thought my shorts and my mom’s nails were turquoise but my mom insisted they were green

I think it might’ve just been the lighting tho, but I’ve worn those shorts many times and they just looked blue with a tinge of green to me

Also found that ADHD is linked to color vision issues on the “blue-yellow axis”. Idk what that means but it’s probably? related

I also have glasses because I have myopia. I’ve heard that certain vision issues are related to ADHD (totally didn’t spend the last 30 minutes reading a bunch of stuff on it teehee), but I’m not quite sure *exactly* what’s wrong with my eyes or what an astigmatism is so…

Also people think that John Lennon had ADHD and he had HORRIBLE eyesight, if that means anything

My prescription isn’t that bad though as of now

Help me @science side of tumblr

[teachersource]

Edwin H. Land was born on May 7, 1909. An American scientist and inventor, best known as the co-founder of the Polaroid Corporation. He invented inexpensive filters for polarizing light, a practical system of in-camera instant photography, and the retinex theory of color vision, among other things. His Polaroid instant camera went on sale in late 1948 and made it possible for a picture to be taken and developed in 60 seconds or less.

[lexapenndari]

An expanse of sea 🇮🇳

Valued at two pennies 🇨🇦

#CannonCanyon #TwoCents #TwoBits #SelfLove #Acceptance #Rewriting #Food #Shelter #Clothing #Vision #2020 #2023 #2119

[bread-tab]

my phone is set to change the screen to greyscale when i'm supposed to be sleeping and as an intensely color-oriented person i notice strange effects here. like, these checkmarks:

i'm reading the outer lighter ones as yellowish and the inner ones as dull shades of blue/green/red. literally just because that's what my brain expects to see there

like i can't just accept the shades of grey

this keyboard i'm typing on right now?

noticeably yellower than the rest of the screen. pretty sure it's psychosomatic but who knows, i could be desperately detecting the color temperature of the screen itself

heck, i use tumblr in dark mode so the background is always dark grey but when my phone is in greyscale i start seeing it as dark blue sometimes

[kuromiyalucien]

Sincerely, Soulsbourne enjoyers

[mlleshopping]

A dog’s eye view: Exploring the visual system from the kennel to the clinic

A dog’s eye view: Exploring the visual system from the kennel to the clinic gene therapyblindnessconesdogrodscolor blindnesscolor visiondog fMRIdog visionvisual system organization

[marlynnofmany]

The bartering of Finger Talking not only makes me crave more Sign Language, but it makes me think of the bartering system of M.U.L.E.. Surely not a galactic standard, but useful graphically for larger auctions or smaller barters?

I haven't played M.U.L.E., but that does sound good! Visual representations in general seem pretty universal. For species that see the same way, at any rate. ("Hello, this chart is in a nice legible shade of blorangeen! What do you mean, you can't see that color?")

[asgeyecareindia]

Eye vision problems with age can significantly impact eye health. Beginning in the early to mid-40s, many adults may start to have problems seeing clearly at close distances, especially when reading and working on the computer. This is among the most common problems adults develop between ages 41 to 60. This normal change in the eyes’ focusing ability, called presbyopia, will continue to progress over time. As we get older, various changes occur in the eyes, some of which may lead to age-related eye conditions.

[scienceswitch]

What Animal Has the Best Eyesight? Exploring the Incredible Diversity of Animal Eyes

Animal eyes come in astounding varieties, each uniquely evolved for a creature’s visual needs. But which animal has the outright best eyesight? There’s no simple answer, as different species excel in various categories. Let’s dive deeper into some top contenders in key vision areas. For low-light vision, the colossal squid stands above the rest with its dinner plate-sized eyes. These massive…