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Human Eye's Oscillation Rate Determines Smooth Frame Rate

jones_supa writes: It should be safe to conclude that humans can see frame rates greater than 24 fps. The next question is: why do movies at 48 fps look "video-y," and why do movies at 24 fps look "dreamy" and "cinematic." Why are games more realistic at 60 fps than 30 fps? Simon Cooke from Microsoft (Xbox) Advanced Technology Group has an interesting theory to explain this all. Your eyes oscillate a tiny amount, ranging from 70 to 103 Hz (on average 83.68 Hz). So here's the hypothesis: The ocular microtremors wiggle the retina, allowing it to sample at approximately 2x the resolution of the sensors. Showing someone pictures that vary at less than half the rate of the oscillation means we're no longer receiving a signal that changes fast enough to allow the supersampling operation to happen. So we're throwing away a lot of perceived-motion data, and a lot of detail as well. Some of the detail can be restored with temporal antialiasing and simulating real noise, but ideally Cooke suggests going with a high enough frame rate (over 43 fps) and if possible, a high resolution.

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  1. Re:The human eye is proof God exists by binarylarry · · Score: 2, Insightful

    Evolution doesn't push "purpose" or "meaning" it's simply an ongoing discovering of how life exists and changes over time.

    Religious zealots find it to be an intrusion into their belief system and thus automatically try to make it into a religion.

    What we know about the process of evolution is constantly changing and as a science NOTHING we think we know is sacred. Like the Sith, religion is the only thing dealing in absolutes.

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  2. Re:"Your eyes oscillate"?? by sribe · · Score: 3, Insightful

    What about our eyes is oscillating?

    The whole eye. Our eyes actually cannot detect a static edge, only transitions. The reason we can see non-moving objects is that the oscillations of the eye provide the transitions. There's a simple experiment from long ago which illustrates this vividly: put a black square on a white background, track a subject's eye motion and move that target with the eye motion so that the image is always hitting the retina at the same location, and voila, the subject cannot see that target.

  3. Re:The human eye is proof God exists by jeffmflanagan · · Score: 5, Insightful

    Smart people don't choose to believe things because they want them to be true like you do. An idea doesn't have to give you a warm fuzzy feeling to be true.

    If religious people had any proof, it would no longer be religion. Of course they don't, because the supernatural is imaginary. Too many people fail to grow out of their childhood superstitions, and never develop an evidence-based adult worldview.

  4. Re:It's in the image by PPalmgren · · Score: 3, Insightful

    Because in games, you're interacting with the content. Any delay in interaction is extremely jarring. Movies and such don't have this issue.

  5. Re:The human eye is proof God exists by Yosho · · Score: 2, Insightful

    The appeal is that it's the truth. People want to discover the truth about how our world works and how we came to exist in it, and science is how we do that -- and every bit of science we have indicates that evolution is the only plausible explanation for the current diversity of life on Earth.

    you're pushing the idea that life has no true purpose and random death means progress

    No, we're not, and I think the whole "you can't have meaning without religion!" bit is one of the most insidious lies the Christian church has pushed. Not following the dogma laid out in 2000-year-old books means you can make your own purpose in life. You can decide what gives you meaning and what you consider progress. I promise that if you go to any Humanist gathering, you will see plenty of people who have meaning and purpose without religion. Talk to them a bit, even -- I'll bet they'll be perfectly friendly if you say, "Hey, I'm a Christian but wanted to see what you guys are all about." Learning first-hand what life without religion is like is better than taking your pastor's word for it (after all, do you think maybe he has his own agenda?).

    I'd rather bet on a .001% chance that Jesus is Lord than 99.999% chance that life is based on nothing but random chance and death.

    Here's the thing, though: there's not a 0.001% chance of that, there's a 0% chance of it. There is zero evidence than any sort of supernatural being exists at all, and it's a huge leap from there to "Christianity is true," with just as much evidence. You are believing it purely because it makes you feel good. That's your choice, but maybe you should find out what the alternative is actually like before dismissing it.

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