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What Do Cats See?

mydeals.com

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Re: What Do Cats See?

#61

Post by sp332 »

hnha wrote: post #46
jobigoud wrote: post #13

I think there is one fundamental flaw with simulating color seen by non humans or dichromat humans. I've seen this in all computer based simulators. They simply change the weight of some colors relatively to others. But a dichromat with say, missing L cones will not simply mix green and red, he will experience "green" totally differently than a trichromat. What a trichromat call green is the result of the stimulation…

that is very interesting, thank you! Could you link to some research/info or drop some terms so I can search myself?

I wrote up a little more detail about the sensitivity of the 3 "colors" of cones in your eye: https://news.ycombinator.com/item?id=4169772

Re: What Do Cats See?

#63

Post by HNSucksAss »

diminish wrote: post #28
jobigoud wrote: post #13

I think there is one fundamental flaw with simulating color seen by non humans or dichromat humans. I've seen this in all computer based simulators. They simply change the weight of some colors relatively to others. But a dichromat with say, missing L cones will not simply mix green and red, he will experience "green" totally differently than a trichromat. What a trichromat call green is the result of the stimulation…

I second your analysis. Moreover the 'qualia' perceived by any creature is not yet well defined. The whole effort is human-centric, even us looking at this web site and seeing 2 versions for comparison. One more thing, is the choice of a city view, which is quite unnatural and a panorama create by humans for humans.

But it reminds me that cats love to look out windows, even high ones where there's little or nothing of interest within 50 feet. If their distant vision were this blurry, I wouldn't expect these scenes to hold their interest.

Re: What Do Cats See?

#64

Post by jewbacca »

josefresco wrote: post #22
eli wrote: post #15

Earlier quoted context omitted.

Prefer the Mail? http://www.dailymail.co.uk/sciencetech/article-2462559/Nicko...

Both the DailyMail and PopSci websites reference this "deals" website as the source. So while the site doesn't look like official news, from what I can tell it seems to be the proper source.

This SEO-looking site does credit Nikolai Lamm, who's also posted the content on his personal site, with no further attribution for the photos:

http://nickolaylamm.com/art-for-clients/what-do-cats-see/

I was surprised to find that the "Art for Clients" tag on his site contains a lot of content that's gone heavily viral recently (especially "The Average Man" photos, which were on HN a few days ago):

http://nickolaylamm.com/category/art-for-clients/

And all these professional news agencies, presumably with legal teams to back it up, attribute Nickolay Lamm as the source for all of those I checked.

From his "About Me":

> I blog for MyDeals.com, MyVoucherCodes.co.uk and StorageFront.com. Each blog post I make takes around 4 weeks to create.

http://nickolaylamm.com/about-me-2/

I smelled something fishy from the "mydeals.com" source from OP, and initially thought that the Daily Mail's attribution to that site was just sloppy and awful... but it all checks out. Huh.

Re: What Do Cats See?

#66

Post by rquantz »

mratzloff wrote: post #60
SeanDav wrote: post #44

This seems to answer a question I asked myself just yesterday: A neighbour's cat and my cat had a argument, no actual fighting - just lots of staring, yowling and that strange growling sound cats make. Nothing too questionable there, but then my cat did something rather strange - she started moving away by walking extremely slowly and I mean extremely slowly. I wondered what on earth she was up to but after reading t…

I suspect not. To do so would imply that cats are self-aware, which no one has been able to demonstrate.

Or that there is an evolutionary advantage to being able to escape other cats by moving slower than they can see.

Re: What Do Cats See?

#67

Post by abhinai »

I am not sure if I agree with the blurriness of cat-seen images. Human eyes are known to be pretty bad in terms of hardware. It is our brain that applies the wonderful image reconstruction that gives us the perception of crystal clear images. By scanning the neural pathways that transmit image data to a cat's brain, researchers have only establish the kind of signals that a cat's eye sends to its brain, not what a cat actually sees. It is entirely possible (and very likely) that the brain of cats sees something very different than what these images would have us believe.

Re: What Do Cats See?

#68

Post by lcedp »

jobigoud wrote: post #13

I think there is one fundamental flaw with simulating color seen by non humans or dichromat humans. I've seen this in all computer based simulators. They simply change the weight of some colors relatively to others. But a dichromat with say, missing L cones will not simply mix green and red, he will experience "green" totally differently than a trichromat. What a trichromat call green is the result of the stimulation…

mind white balance correction?

Re: What Do Cats See?

#70

Post by puetzk »

anigbrowl wrote: post #53
chatman wrote: post #11

I have seen my cat find a mouse in a camouflaged garden even when the mouse was not moving. Either this study is wrong or my cat is special.

The mouse wasn't moving that you could see . Consider that a mouse has a much higher heart rate; if you can pick one up (eg those rare occasions where you are able to rescue prey from the cat) they practically vibrate in your hand. Also, another poster makes a good point about cats' hearing. Not only do cats hear in higher frequency ranges than we do thanks to their reduced size, they can angle their ears to 'focus'…

Mount the microphone/headphones in something like these? http://www.necomimi.com/

You might have to follow through on that "I would cheerfully sacrifice a good deal of social standing" part, though...

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