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Thread: why we dont perceive depth like a 3d movie?

  1. #1 why we dont perceive depth like a 3d movie? 
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    it could be the cameras are more separated than the human eyes

    but its the same watching an object at ten m distance with the camera separated 10 cm than watch it at 20 m with the camera separtaed 20 cm

    so why we dont percieve reality as a 3d movie?

    i have no answer for this

    in fact i see the same with one eye than with both in reality but in a 3d movie i dont see the same with one eye than with both


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    from the wiki:

    • Stereopsis or retinal (binocular) disparity - Animals that have their eyes placed frontally can also use information derived from the different projection of objects onto each retina to judge depth. By using two images of the same scene obtained from slightly different angles, it is possible to triangulate the distance to an object with a high degree of accuracy. If an object is far away, the disparity of that image falling on both retinas will be small. If the object is close or near, the disparity will be large. It is stereopsis that tricks people into thinking they perceive depth when viewing Magic Eyes, Autostereograms, 3-D movies and stereoscopic photos.
    • Convergence - This is a binocular oculomotor cue for distance/depth perception. By virtue of stereopsis the two eye balls focus on the same object. In doing so they converge. The convergence will stretch the extraocular muscles. As happens with the monocular accommodation cue, kinesthetic sensations from these extraocular muscles also help in depth/distance perception. The angle of convergence is smaller when the eye is fixating on far away objects. Convergence is effective for distances less than 10 meters.[citation needed]
    • Shadow Stereopsis - Medina demonstrated that retinal images with no parallax disparity but with different shadows are fused stereoscopically, imparting depth perception to the imaged scene. He named the phenomenon "shadow stereopsis." Shadows are therefore an important, stereoscopic cue for depth perception.[7]
    if this is true how can we apreciate depth in this stereogram?




    we should see an x instead of I with depth


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  4. #3  
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    Those "3D movies" were fake. If it was a real 3D: then you shouldn't be able to notice it (just like real life). A quote: "our job is to make 3D picture as real as real life, such that you don't notice it" -Science.Of.the.Movies (Discovery Channel documentary on movie making), Narr William when interviewing an expert on capturing 3D movies.

    You can make this fake 3D by playing a video slightly faster on your right eye and slightly delayed on left eye, or vice versa, or buy a video system that automatically do this for you. This is not real 3D but an illusion. Real 3D felt nothing.
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  5. #4  
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    yes we agree we dont have depth perception in real life

    im doing exercises with my eyes to heal shortsightedness and now i see this clip stereoscopic and some other media, im so confused

    MUSE - Neutron Star Collision (Love Is Forever) [OFFICIAL VIDEO] - YouTube
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  6. #5  
    Moderator Moderator TheBiologista's Avatar
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    Quote Originally Posted by luxtpm View Post

    so why we dont percieve reality as a 3d movie?
    Because current 3d technology is crude and flawed and we can tell the difference between a forced perspective 3d image and reality?

    You had a thread about this already and I locked it. Please explain why you felt the need to open a new thread on this topic?
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    Quote Originally Posted by luxtpm View Post
    yes we agree we dont have depth perception in real life
    uhh, no we don't agree
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    oh i agree with the lock of the other thread by mentioning angels which is unscientifical but i changed my ways and im scinetific now

    for example why if we close one eye in a 3d movie we lose depth perception but this doesnt happen in real life
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    Quote Originally Posted by TheBiologista View Post
    Quote Originally Posted by luxtpm View Post

    so why we dont percieve reality as a 3d movie?
    Becausand e current 3d technology is crude and flawed
    ?
    well its presenting one correct image for each eye?

    why is flawed how would you improve it?
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    Quote Originally Posted by MeteorWayne View Post
    Quote Originally Posted by luxtpm View Post
    yes we agree we dont have depth perception in real life
    uhh, no we don't agree
    wel you have what i call pseudostereoscopy, your eyes converge and your brain does triangulation, but you actually dont have depth perception as is the case of a 3d movie

    in fact a 3d movie is an enhanced perception, i would love to have that perception to hunt flies
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  11. #10  
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    Oh for crying out loud!

    We have true, totally 3D depth perception in real life due to the fact that we actually live in 3 spatial dimensions and we have two eyes!

    Whereas a 3D movie projects an image onto a 2D screen, using a system that targets specific information to each of our eyes, in order to fool us into thinking we are seeing an image with depth.

    Oh, and people with one eye have reduced depth perception, in real life.
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    Quote Originally Posted by luxtpm View Post
    oh i agree with the lock of the other thread by mentioning angels which is unscientifical but i changed my ways and im scinetific now

    for example why if we close one eye in a 3d movie we lose depth perception but this doesnt happen in real life
    Yes it does.
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    Quote Originally Posted by SpeedFreek View Post
    Oh for crying out loud!

    We have true, totally 3D depth perception in real life due to the fact that we actually live in 3 spatial dimensions and we have two eyes!

    Whereas a 3D movie projects an image onto a 2D screen, using a system that targets specific information to each of our eyes, in order to fool us into thinking we are seeing an image with depth.

    Oh, and people with one eye have reduced depth perception, in real life.
    In fact, the "depth perception" that remains is based on perceived size and clarity relationships, not true stereo vision, so is subject to all the foibles of the human eye-mind perception system. That's why fireballs always fall "right over the next hill" for 500 miles
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    yes but the 3d world is projected in a flat retine and if you know something of projection ...

    actually to make perfect stereo all you need is to move the vanishing point of the picture as the eye moves, but it would be such a perfect stereo youd see it flat so nobody would pay for that

    but be honest what you prefer the perception of a 3d movie or the real life "flat" perception

    and how would you explain that with my eye exercises ive managed to have a perception IDENTICAL to a 3d movie for seconds

    its an accepted fact that you need several days looking with just one eye to lose depth perception so while it its an accepted scientific fact you see the same with one eye than with two

    what would be better for a hunter a 3d movie perception or ours?

    could our perception be damped?
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  15. #14  
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    Quote Originally Posted by luxtpm View Post
    Quote Originally Posted by TheBiologista View Post
    Quote Originally Posted by luxtpm View Post

    so why we dont percieve reality as a 3d movie?
    Becausand e current 3d technology is crude and flawed
    ?
    well its presenting one correct image for each eye?

    why is flawed how would you improve it?
    It's presenting a correct image for each eye so long as 1) the viewer is exactly where the film maker expects him to be relative to the screen and stays there 2) the viewer watches the exact part of the image the film maker wants him to watch throughout the film. We're also used to being able to shift our viewpoint by moving our eyes, head and body around. We can't do that with a 3d film.

    Plus, the real world doesn't hurt my eyes and give me a headache within 15 minutes of experiencing it. 3d films do and I'm not alone in that.
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    well then no in cinemas but for pc games would be posible to make perfect 3d

    a webacam records your position and gives you the right input for that position, or what the heck you make your head fixed in one position

    just by that it would be posible perfect stereo

    probably you dont believe me but im begining to see in stereo due to my exercises

    all media is in stereo but we cant tell since we see equally with one eye than with two, i couldnt tell before im begining to can now

    what would be better for a tennis player have a depth perception like a 3d movie or the primitive triangulation pseudostereoscopy
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  17. #16  
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    Quote Originally Posted by luxtpm View Post
    well then no in cinemas but for pc games would be posible to make perfect 3d

    a webacam records your position and gives you the right input for that position, or what the heck you make your head fixed in one position
    Maybe, but this is not currently what happens, hence the difference we perceive between 3d games and films and reality.
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    Quote Originally Posted by luxtpm View Post
    yes but the 3d world is projected in a flat retine and if you know something of projection ...

    ?
    No, it's projected on TWO retinas.
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    Is it possible that if our eyes were farther apart, we would view the world in the exaggerated mode of 3D games and movies?
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    "our job is to make 3D picture as real as real life, such that you don't notice it"

    good job all media is already like that

    according my perception youtube is stereo
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  21. #20  
    Time Lord Paleoichneum's Avatar
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    prove you are not the one with the visual defect that is continually making you have perception differences from the population in general.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    well i dont think i can prove a perception, maybe im flawed but im not lying

    the real question is why would youtube be perfect stereosocpic if "noone" notice

    i think its so angels can see, even the phtotographs of the papers are in 3d

    you know what they say of angels, they dont see colour not even black and white
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  23. #22  
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    Mybe because from the time that we emerge from the womb and open our eyes for the first time we are seeing in stereoscopic vision, and thus our brain is totally attuned to it.

    BTW angels are bs, so leave them out of it
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    according my research we all look wrong:

    to see in stereo you dont have to converge your eyes in the object youre looking at but at midel distance from it

    edit:

    also being drunk helps on this, yesterday i was watching every youtube video in stereo

    today not so much

    its most easy for me to apreciate stero with siloutes like that neutron star collision by muse video

    but oh boy can you imagine my shock when i saw the opening island of monky island stereoscopic

    its like wtf i dont know what to think

    its not im special im healing my short sightedness with exercises when im done ill provide you a certyificate
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  25. #24  
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    prove your research is correct and you understand the concepts involved.

    Or to put it another way, why are you right and centuries of medicine are wrong?
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    well theyre paid to do that they dont even like it i do

    according the scientist on perception bs when you look with just one eye your eye fills the gaps

    come on to see stereo you need two eyes if you see equally with one eye than with two you dont see in stereo, period(think of a 3d movie)

    also the powers want us dumb since romans times
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  27. #26  
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    Massive global conspiracy is an acceptable answer, especially since I was specific in noting centuries of medical knowledge.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    well i really have no answer for that who knows

    all i know my eye exercises have made me see youtube videos often stereoscopic and sometimes in real life for seconds ive seen like if i was in a 3d movie, what a trip man

    what it means i have no clue and probably is better not trying to find answers with so litle info if i dont want to go crazy

    just enjoy the trip
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  29. #28  
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    Still sounds to me like something to do with you yourself and not something that involved the billions of the rest of humanity. And this is supported by the openly accessible and long documented research of thousands of medical practitioners around the world over the centuries.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    well i think its like the emperors new clothes:

    in a 3d movie if you close one eye you lose depth perception

    in reality if you close one eye you keep seeing equally therefore you have mono vision

    man whats so difficult to understand about it

    do you realize youre denying a fact you know its true what makes you delusional?

    just like the emperors new clothes
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  31. #30  
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    I am not denying anything, I am saying that it is very very likely you are an exception to the rule. When I close one eye I do not keep seeing equal, I loose some of my depth perception, and if I was placed in an unfamiliar room with only one eye to use I would have trouble due to the lack of familiarity with the surroundings.

    This shows I have stereoscopic vision and refutes your point, nullifying your current hypothesis.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    well then you would be unique

    i heard an expert on visual perception saying that when you close one eye you dont lose depth perception since your brain feels the gaps

    you would have to spend several days lokking with one eye to lose depth perception according this expert

    such a beatifull clothes arent there?

    so when you close one eye your real life perception changes as it does when you close one eye in a 3d movie

    man such a reality denial
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  33. #32  
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    "spend several days looking with one eye to lose depth"

    And yet you are totally ignoring the importance of this statement, which supports the position of actual science in that it acknowledges we do have stereoscopic vision. And it supports my position in that you loose the memory of objects placement after a couple of days.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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  34. #33  
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    no what we have is pseudostereoscopy

    our brain triangulates the convergence of our eyes

    true depth perception is what you have in a 3d movie, you know what i mean,

    i know ive had it in real life for seconds several times
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  35. #34  
    Time Lord Paleoichneum's Avatar
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    And how many times do we have to point out that the "3-d" in movies is shitty and purposely accentuated? It is not "true" 3-d vision, and please provide evidence that "pseudostereoscopy" is an actual term and not something you made up.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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  36. #35  
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    i made it up

    but think about it

    if tv was perfect stereo would you notice?

    edit:

    the way to acentuate stereo is just by closing up

    it cant get more stereo than your nose
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  37. #36  
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    tv is a 2dimentional object, the same as painting and pictographs are. the only difference is that is image moves.

    have you got any general science training such as high school biology/chemistry or the like?
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    well i have a degree in english filology and im finishing another on nautic engineering, nothing on perception though
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  39. #38  
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    So really no biology or research based education.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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    well my research is if i can heal short sightedness with myself as guinea pig

    being outside the sicentific world where the authority criteria imposes its actually an adavnatage

    im practicing a known technique of blinking slightly strong, this taught me an optometris who would have heal a daughter of my my moms friend hypermetropy

    this makes me see triple and better for seconds? maybe the pineal gland percieving light?

    also im learning to control the parallax of my eyes

    i think that controlling my eye parallax totally concious i could control by ende my eye lens muscles consciouslly

    also seeing double multiplies the inter hemispheric info which develops the corpus callosum

    also the binocular rivalry is a lie, most people have interhemispheric fusion

    but this is my pair of aces game

    actually im going for a royal stair flush

    to become binaural, achieve enlightenment

    also this exercise have broguht the ability to see auras ocasionally

    edit:

    i think i know why i see youtube stereo:

    i see many youtube videos stereo, sometimes tv and rarely reality

    but i see all and every miniwindows which appear on suggestions videoclips of youtube stereo

    seems theres the ultrawide stereo of reality and the mini streo of a miniwindow

    and you said the angels its bs

    well call them alien if you rather if youtube is stereo and you and me dont notice theres people who do and hide

    and they made tyhose machines and the medai and all

    imagine the wolrd was perfect and you lived forever what would you do not to desperate from anhedonia and boredom?

    exactly erase your memory and stage some horror

    you know the world is a stage

    edit:

    im gonna explain you how depth perception works:

    if you converge the eyes in the object you look at , the normal look , you have zero depth perception


    now by my quite concious control of the parallax of my eyes i can see slightly double

    but just slightly as to let my brain WOORK and overimpose both images

    if you check my first stereogram of this therad youll se the brain can overimpose what CANT be optically overimposed

    you see i think the mayas were crosseyed because they were all the time looking at the stars

    the depth perception can be controlled at will

    if you look crosseyed at the stars and let a working brain do the overimposition youd be able to tell the close stars from the far away ones

    edit:

    also i can watch youtube videos flat or in stereo at will

    if i look normal its flat if i look slightly crosseyed its stero

    how cool there no cheraper and better 3d screen than this
    Last edited by luxtpm; September 26th, 2011 at 02:43 PM.
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