Ok,
so i had an idea and not being that technically minded i thought id post it as a question instead of a statement...
Why wouldn't we be able to use the 3D's dual cameras just like the Kinect uses its?
Perhaps we could port software from one to the other...
Maybe on a 3d Windows phone.. but who knows...
sent from anything but an iPhone
That's not how it works.
The cameras are used for the 3D depth, sure, but the Kinect also uses an IR sensor to shoot tiny dots of IR light, covering the room. Your movements to block this light are also recorded by the Kinect and used in translating your motion on screen.
I'm sure there will be some cool uses for a 3D camera--but it won't ever be as easy as "porting straight over" or anything like that.
vegaobscura said:
That's not how it works.
The cameras are used for the 3D depth, sure, but the Kinect also uses an IR sensor to shoot tiny dots of IR light, covering the room. Your movements to block this light are also recorded by the Kinect and used in translating your motion on screen.
I'm sure there will be some cool uses for a 3D camera--but it won't ever be as easy as "porting straight over" or anything like that.
Click to expand...
Click to collapse
He is right, the technology you are talking about just isn't fully inside the Evo 3D like it is in the Kinect sensor, although I do have a few ideas on what to do with the added 3D capabilities as a developer myself. Nice job, thinking outside the box OP.
I mean, a 2D camera can do depth and motion sensing if you calibrate it properly and SPECIFICALLY (with say, ONE object to focus on like a ball, Playstation Move I'm looking at you).
A 3D camera will offer you the depth, but calibration might offer you problems. Sure it can sense and translate depth, but I think the point of the IR in the Kinect is to take away most of the calibration and calculations necessary from there, as well as increase the accuracy of the translation.
Put another way:
If I move in front of my 2D camera, it sees me get larger and smaller--stuff like that.
If I move in front of a 3D camera, it sees me move on an axis, as it can sense what's also around me--a front and a back, as it were.
If I move in front of a Kinect, not only can it see what's in front and in back of me to sense the depth, but it also knows exactly how many IR lights it's shooting out across the room, the exact distance between each one--and which ones I am violating with my motions.
Surely it is easier to say, "He's blocking these lights, which means he's at point (x,y,z)," than it is to say, "If the table is 5 meters away and is 1.5 meters tall, but it looks like it is x meters tall from this distance, and the man here is approximately 2 meters tall, and he's shrinking and growing by this much--that means he's approximately this far from us and this far from the table...."
In pure logical terms, it seems like there would be a LOT of calculations need to be done if you were to want to use a 3D camera for the ENTIRE of the motion sensing--which would limit the amount of resources available to the rest of your program and...etc.
On a computer, this might not be a problem, given enough resources and given what you aim to achieve. On a console...I remember hearing that the Kinect did use the Xbox SPUs to run calculations and that that DID limit the overall system resources in some way. On a phone? I expect some problems.
Not only with how you might intend to use it, functionally (hold camera so other people could play games? Use it for AR purposes?), but with the resources available to do it with. These are all interesting ideas, but I'm not convinced that a phone is yet up to snuff to do such constant calculation and dynamic calibration on the fly.
But I've been known to be wrong.
...from time to time.
My thought was to eventually be able to run motion sensitive games directly form the Evo 3D in 3D. Put the phone in a central position above or below my tv, connect a compatible controller and play BAD ASS 3D games or semi cool 2D games.
... you know seeing my idea spelled out like this really shows me how farfetched it really is, oh well maybe in 5 years you never know.
The kinect also uses some proprietary technology that they own. Well they did once they bought the company who designed it.
i think this can be done and someone should try it
one_mic_only said:
i think this can be done and someone should try it
Click to expand...
Click to collapse
vegaobscura said:
That's not how it works.
The cameras are used for the 3D depth, sure, but the Kinect also uses an IR sensor to shoot tiny dots of IR light, covering the room.
Click to expand...
Click to collapse
ten chars!
Doesn't the kinect also have a infrared beam to tell depth.... I think we are missing that..
Related
Hi,
I have searched from all over the web app that could change camera's exposure time. I like to take good nigh photos, or anyway as good as it's possible with mobilephone camera, but like in mine HTC Desire exposure time is way too short.
I have tried many of those camera apps from market, like camera 360, but non of them can adjust shutter speed/exposure way I wanted. Say, I want a long exposure for night photo. For example I would like input exposure value to app, so that it would expose photo for 10 seconds.
So, do anyone know app to change exposure/shutter speed?
And my Desire is not rooted and I'm currently not planning to do so.
Would love to know about this, too; any ideas for this?
Sign me up for this as well.
Long exposures would be great. Would need some sort of remote shutter release or time delay ideally and a mounting system, tripod fashion.
Problem is - you'd also need a mount or tripod of some sort to hold the camera still enought to make long exposures work
I don't know about the rest of you but I can only handhold steady my DSLR down to about 1/80th of a second
Argent36 said:
Problem is - you'd also need a mount or tripod of some sort to hold the camera still enought to make long exposures work
I don't know about the rest of you but I can only handhold steady my DSLR down to about 1/80th of a second
Click to expand...
Click to collapse
I have managed 1/15 and 1/8 (the latter very rarely) handheld with my Pentax (image stabilisation built into body FTW), but yeah, you would have to use a tripod or to prop it up and have a timed shutter release for the phone. This isn't a problem as such, even just being able to specify the aperture would be welcome.
Well a mount can be anything...jumper, phone leaned against a wall. Would be awesome for cityscapes and such. Anyone found anything which indicates this is possible with a software patch? New to android and just tearing through my first rom package
Exactly, it doesn't have to be anything serious, just lean it against a beer for example.
I can't see a reason why you couldn't manually control everything, I can control ISO, metering, etc on my SGS, adding aperture and shutter shouldn't be outside the realm of possibility.
Had a look around as a noob to Android dev/roms etc. and I don't think it's possible to control the hardware to that level :/
Would love to be corrected on this, though!
I don't have the SDK installed anymore, can someone test what camera.getParameters gives on a device?
This would be great, the DX has a nice camera but additional lens control would put the icing on the cake
Sent from my DROIDX using XDA App
Tachikoma_kun said:
I don't have the SDK installed anymore, can someone test what camera.getParameters gives on a device?
Click to expand...
Click to collapse
Parameters not found I'm doin it wrong?
Epic is as Epic does
Argent36 said:
Problem is - you'd also need a mount or tripod of some sort to hold the camera still enought to make long exposures work
I don't know about the rest of you but I can only handhold steady my DSLR down to about 1/80th of a second
Click to expand...
Click to collapse
I can handhold my Leica down to 1/15. You need more practice (a lot of it).
Argent36 said:
Problem is - you'd also need a mount or tripod of some sort to hold the camera still enought to make long exposures work
I don't know about the rest of you but I can only handhold steady my DSLR down to about 1/80th of a second
Click to expand...
Click to collapse
Not to be too big a jerk here, but if you can only hand-hold an SLR steady, any SLR, at 1/80 or faster then I'm sorry to say that you may have a serious case of parkinson's, or are the most ADHD person who ever picked up a camera.
1/60 is recognized as the speed at which regular hand-held motion is mitigated, and unless you're actively moving the camera (or standing on top of a paint-mixer), you will not get camera-shake at that speed. Most photographers are able to hand-hold, and get a shake-free shot, down to about 1/8 on a good day.
PokeAsheep said:
Parameters not found I'm doin it wrong?
Epic is as Epic does
Click to expand...
Click to collapse
What was the rest of the code? and did you try this on actual hardware or the emulator?
I will try to code an app for that. Plus FFC Support...
but you'll have to wait until I'm back from Japan
EDIT: It's not possible to really influence the shutter-speed or the aperture, because it is non-existent in the hardware, but there can be an interpolation of both values that are calculated from ISO settings and exposure calculation. It won't be perfect in any way, but it might be possible to do something similar... probably it is possible to gain more control via the ndk or by "cheating".
Thanks Flokey!
Does anyone knows if there is such a program?
I don't think a long shutter on todays camera phones would be useful as the sensor noise would be crazy bad.
Sent from my Galaxy Nexus using Tapatalk 2
Fv-5 camera in the market. Try that
"10mp" camera?! HDR, sports mode, night vision, and more dual-camera possibilities!
fattank said:
BlueScreen said:
1) HTC EVO 3D will isolate twin cameras to produce the firsts 180 degree panoramic photo at 5mp resolution. (Option will be in sense UI)
2) HTC EVO will produce the first ever 10mp photo on cell phone by using what is called paralax photo capture (each camera will capture an image and over lay it to produce 10mp photo) (Once again tap on 10mp photo)
3) Light sampling will be independent of each CMOS sensor to produce what will be close to night vision capture (Night Owl)
4) Camera will have a Sport mode, the 5mp camera's will function in tandem, but alternate. Each camera will burst alternately and provide crystal clear photography on high speed action events. (11 fps) I have tested this out and watch a 20ft putt go in the hole in frame, by frame increments. To be upfront burst sport mode will only work in 2d mode for obvious reasons, because the two cameras are sharing the [email protected]
Click to expand...
Click to collapse
Granted that this garbage above was initially spewed by some poser who pretended to work for HTC/Sprint... some of the ideas are genuinely clever. I've added them to my own in the list below of what could possibly result from the dual-camera setup. Tell me what you think!
Greater detail. Using both cameras at once to capture two 5mp images and "overlaying" them is interesting. Maybe adaptively "adding" the details in one to the other? Maybe using some kind of "interlaced" trick, or maybe the tilt is a bit different so both can take pictures of 2 different [but adjacent] visual fields for "instant panorama"?
Greater depth of focus. Each camera can shoot simultaneously with a different focus, and the result easily combined into a picture with incredible depth of focus.
Sport mode (shutter speed enhancement) seems like a wonderful idea. Both cameras fire, one a few ms after the other, and the result motion compensated. The perspective difference may also be used to identify and correct for motion blur. As an instantaneous "anti-shake" this would work wonderfully, too. All in all, this would allow the camera to capture faster motion with less blur!
Double speed burst-mode. Burst mode could theoretically be twice as fast, since the other lens could fire during the recovery time of the first.
Dark mode / night owl / de-graining. A fantastic idea would be to use both cameras to capture a picture simultaneously at high ISO and use a simple perspective-corrected denoiser to drastically improve quality of night scenes, which suffer most from grain issues. Each picture is bound to have a different amount of "random noise" or "camera noise" from the two cameras, and after perspective correction (and/or motion compensation if one fires after the other), the randomness is detected and removed from the combined image.
HDR (High Dynamic Range) can be achieved with no additional delay by having both cameras snap at different exposures and combining the result, solving the "low dynamic range" problem with the Sensation and other phone cameras.
Apply all of these to video. If both capture video simultaneously, there could be some benefit in 2D mode -- timestamps of the recorded frames can allow them to be combined to produce a single video of higher effective average framerate -- again, with some simple HW perspective correction filter. It could also drastically improve the quality of night video in the same way as the above "night mode" camera use with the additional potential advantage of temporal denoising, resulting in the cleanest night video you can imagine. Not to mention the first ever high dynamic range (HDR) video on a mobile device.
Click to expand...
Click to collapse
It's obvious these aren't going to be included in the official ROM, but I'm sure there can be "an app for [some of] that" provided the API of both cameras are exposed. Exciting prospect, is it not? The only one of these that seems a bit hard to chew is of course the 10mp nonsense. At most the combined detail would just produce a "very nice" 5mp shot.
Phew......someone walk a truckload of sick horses through here?
Lolz
Sent from my HERO200 using XDA Premium App
daneurysm said:
Phew......someone walk a truckload of sick horses through here?
Click to expand...
Click to collapse
I don't quite get it.
Anyway, I also think it would be neat to use the two cameras to offset an alarming trend in phone cameras -- low dynamic range. Both can fire simultaneously at different exposure settings, and combined into one HDR image.
I think what they mean by the horses, is that this is kinda crap.
It's already been known that when taking 2D pictures, it uses the top-most camera only. It uses only one. Only in 3D does it use both cameras.
random1204 said:
I think what they mean by the horses, is that this is kinda crap.
It's already been known that when taking 2D pictures, it uses the top-most camera only. It uses only one. Only in 3D does it use both cameras.
Click to expand...
Click to collapse
Ah... gotcha. More than "kinda" crap, it's genuine crock, yes.
But I'm saying the ideas are so good -- the potential is there. With a system update from HTC, these can be almost trivially enabled. Otherwise, if the API for camera 2 is accessible, an app can be created to provide the remaining functionality.
curiousGeorge said:
Ah... gotcha. More than "kinda" crap, it's genuine crock, yes.
But I'm saying the ideas are so good -- the potential is there. With a system update from HTC, these can be almost trivially enabled. Otherwise, if the API for camera 2 is accessible, an app can be created to provide the remaining functionality.
Click to expand...
Click to collapse
I think these are really cool ideas. I'm sure there will be some developer(s) out there who will develop apps to take full advantage of the 2 cameras, perhaps implementing some of the ideas you have suggested.
mlin said:
I think these are really cool ideas. I'm sure there will be some developer(s) out there who will develop apps to take full advantage of the 2 cameras, perhaps implementing some of the ideas you have suggested.
Click to expand...
Click to collapse
Cool! I just added a few more to the list, including some links and explanations of "how it could work."
curiousGeorge said:
Ah... gotcha. More than "kinda" crap, it's genuine crock, yes.
But I'm saying the ideas are so good -- the potential is there. With a system update from HTC, these can be almost trivially enabled. Otherwise, if the API for camera 2 is accessible, an app can be created to provide the remaining functionality.
Click to expand...
Click to collapse
Yea, forget all the crap that everyone spews. Anything is possible, with the devs here on xda. As Mlin said, I'm sure there will some dev or a team of devs that will develop an app to take FULL advantage of the dual cams. Granted, I'm sure there will be plents of limits on what the cams are capable of, however, I'm sure that those limits will be pushed and that we'll eventually get max potential out of the cams.
Did anyone think we'd ever get Full HDMI mirroring working on the OG Evo?
Sounds good but nobody seems to care about the camera, look at aosp cameras
daneurysm said:
Phew......someone walk a truckload of sick horses through here?
Click to expand...
Click to collapse
This about sums it up.
This might sound great and all but come to execution, I don't see it happening.
cordell12 said:
Sounds good but nobody seems to care about the camera, look at aosp cameras
Click to expand...
Click to collapse
Good point. But hopefully the actual camera hardware on the 3D will be quite nice, so more will be able to be done with it. Hopefully. I would think that there could be more potential to be unlocked in the cams, but who knows.
Anyone know which devs have said they will be coming over to the 3d to develop yet?
jayharper08 said:
Anyone know which devs have said they will be coming over to the 3d to develop yet?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1008413
Search is your friend.
-----
Sent from my CDMA Hero. I got some hot Ginger-on-Hero action here!
user7618 said:
http://forum.xda-developers.com/showthread.php?t=1008413
Search is your friend.
-----
Sent from my CDMA Hero. I got some hot Ginger-on-Hero action here!
Click to expand...
Click to collapse
Nice.... Thank you. It's been a long time since I've had to search for something. Totally forgot what that even meant
curiousGeorge said:
Greater detail. Using both cameras at once to capture two 5mp images and "overlaying" them is interesting. Maybe adaptively "adding" the details in one to the other? Maybe using some kind of "interlaced" trick, or maybe the tilt is a bit different so both can take pictures of 2 different [but adjacent] visual fields for "instant panorama"?
Greater depth of focus. Each camera can shoot simultaneously with a different focus, and the result easily combined into a picture with incredible depth of focus.
Sport mode (shutter speed enhancement) seems like a wonderful idea. Both cameras fire, one a few ms after the other, and the result motion compensated. The perspective difference may also be used to identify and correct for motion blur. As an instantaneous "anti-shake" this would work wonderfully, too. All in all, this would allow the camera to capture faster motion with less blur!
Double speed burst-mode. Burst mode could theoretically be twice as fast, since the other lens could fire during the recovery time of the first.
Dark mode / night owl / de-graining. A fantastic idea would be to use both cameras to capture a picture simultaneously at high ISO and use a simple perspective-corrected denoiser to drastically improve quality of night scenes, which suffer most from grain issues. Each picture is bound to have a different amount of "random noise" or "camera noise" from the two cameras, and after perspective correction (and/or motion compensation if one fires after the other), the randomness is detected and removed from the combined image.
HDR (High Dynamic Range) can be achieved with no additional delay by having both cameras snap at different exposures and combining the result, solving the "low dynamic range" problem with the Sensation and other phone cameras.
Apply all of these to video. If both capture video simultaneously, there could be some benefit in 2D mode -- timestamps of the recorded frames can allow them to be combined to produce a single video of higher effective average framerate -- again, with some simple HW perspective correction filter. It could also drastically improve the quality of night video in the same way as the above "night mode" camera use with the additional potential advantage of temporal denoising, resulting in the cleanest night video you can imagine. Not to mention the first ever high dynamic range (HDR) video on a mobile device.
Even if these aren't included in the official ROM, I'm sure there can be "an app for [some of] that." Exciting prospect, is it not? The only one of these that seems a bit hard to chew is of course the 10mp nonsense. At most the combined detail would just produce a "very nice" 5mp shot.
Click to expand...
Click to collapse
You get an "A" for thinking so far outside the conventional box, but unfortunately I don't see any real possibility of any of that ever coming to pass, for one inescapable reason: the two cameras aren't shooting from the same location. Every concept you describe requires that both cameras see the same thing, and they don't, for the simple fact that the pictures they take are from two different physical locations.
oldjackbob said:
You get an "A" for thinking so far outside the conventional box, but unfortunately I don't see any real possibility of any of that ever coming to pass, for one inescapable reason: the two cameras aren't shooting from the same location. Every concept you describe requires that both cameras see the same thing, and they don't, for the simple fact that the pictures they take are from two different physical locations.
Click to expand...
Click to collapse
Fixed-point location adjustment is trivial and can be performed in software/hardware with minimal effort (even perspective/angle adjustment via convolution-deconvolution of 3d signal matrix). Also, even if they weren't shooting from precisely the same location or perspective, the motion-compensated technique can be applied even to different frames in a video (making 'night shots' more doable), since the temporal element is the most tricky. If both cameras fire simultaneously, tracking synthetic "motion vectors" is utterly trivial.
Even if a developer was lazy and didn't want to implement perspective correction, a subset of the two pictures near the center (where they overlap) can be used for all of the rough work, and a simple guassian averaging function can perform the spreading (or simulated annealing) from that point.
No, location is certainly not a problem -- and even perspective is fairly easy to (accurately) account for via straightforward signal processing algorithms both in hardware and software.
Smells like a big fart in here
toxicfumes22 said:
Smells like a big fart in here
Click to expand...
Click to collapse
Sorry, that was me (despite your clever username).
jayharper08 said:
Nice.... Thank you. It's been a long time since I've had to search for something. Totally forgot what that even meant
Click to expand...
Click to collapse
No problem. I actually didn't use the search, either. That thread was like two below this one on the list.
-----
Sent from my CDMA Hero. I got some hot Ginger-on-Hero action here!
Does the Evo 3D have a gyroscope sensor?
Not a gyroscope, that would be a difficult thing to put into a portable anything. I'm pretty sure it does have an accelerometer though.
I tried to balance my 3vo on a piece of string. Didn't work.
Jk yes I think it has one.
Sent from my 3vo.
It does, for what it's worth. Not sure how many other Android phones have it, or plan to have it, so you might not get the same number of apps that take advantage of it like the iPhone 4.
Not sure about the 3VO having it, but to the person not saying what phones have it, lots of Android phones have it, but I haven't seen any apps to use it yet.
There wasn't an API till Gingerbread, anyway. However, I know the Galaxy S devices all have one, and the Galaxy SII. The Nexus S also. Most of the new phones coming out now have it.
Phone Arena says yes it does have one.
http://www.phonearena.com/news/HTC-EVO-3D-clears-the-FCC-June-24-release-looking-good_id19293
second paragraph.
Neo3D said:
Does the Evo 3D have a gyroscope sensor?
Click to expand...
Click to collapse
System Info in Quadrant tells me it does.
Sensors
MPL rotation vector
MPL linear accel
MPL gravity
MPL Gyro
MPL accel
MPL magnetic field
MPL orientation (android deprecated format)
CM3602 Proximity sensor
CM3602 Light sensor
Actually, the Evo 3D would be the most advantageous phone to have a gyroscopic sensor.
I have no idea how this 3D tech works, but I noticed in the Spiderman game that you can adjust the intensity of the 3D effect.
When I first imagined how 3D would be on the 3vo, I thought it was like real 3D where you could turn the phone and partially see other angles of objects in the image, but it's more like a 3D diorama type effect...so if you turn the phone, the image just goes blurry you have to look at it STRAIGHT ON for even the "3D diorama" effect to work and the "sweet spot" viewing angle is very very narrow. 1 degree off and it becomes blurry again.
So, I was wondering, if it does have a gyroscope, couldn't some enterprising developer use it to alter the "amount" of 3D as the user turns the phone to simulate viewing the image from other angles? Or, alter the 3D effect as the phone rotates so that the 3D diorama effect at least a much more wider and forgiving "sweet spot."
Of course, you'd have to "zero calibrate" before each use of the app so that the phone knows at what angle the image looks "straight on" to you. But then after that, as you turn the phone, the gyroscope sensor could send data that you could use to alter the 3D to create a more realistic effect?
I hope that phoneArena article is correct.
It's so hard to find out what 3D viewer is built into the 3vo. Anyone got info on that? Maybe we can hack it to take advantage of the gyro sensor?
Neo3D said:
Actually, the Evo 3D would be the most advantageous phone to have a gyroscopic sensor.
I have no idea how this 3D tech works, but I noticed in the Spiderman game that you can adjust the intensity of the 3D effect.
When I first imagined how 3D would be on the 3vo, I thought it was like real 3D where you could turn the phone and partially see other angles of objects in the image, but it's more like a 3D diorama type effect...so if you turn the phone, the image just goes blurry you have to look at it STRAIGHT ON for even the "3D diorama" effect to work and the "sweet spot" viewing angle is very very narrow. 1 degree off and it becomes blurry again.
So, I was wondering, if it does have a gyroscope, couldn't some enterprising developer use it to alter the "amount" of 3D as the user turns the phone to simulate viewing the image from other angles? Or, alter the 3D effect as the phone rotates so that the 3D diorama effect at least a much more wider and forgiving "sweet spot."
Of course, you'd have to "zero calibrate" before each use of the app so that the phone knows at what angle the image looks "straight on" to you. But then after that, as you turn the phone, the gyroscope sensor could send data that you could use to alter the 3D to create a more realistic effect?
I hope that phoneArena article is correct.
It's so hard to find out what 3D viewer is built into the 3vo. Anyone got info on that? Maybe we can hack it to take advantage of the gyro sensor?
Click to expand...
Click to collapse
Interesting idea
I don't know much about 3D in this way. With 3D in the 'perspective way' as provided by OpenGL it is surely possible, and also without the need for calibration - because you can use the accelerometer for detecting absolute angles and the gyro for detecting fast changes. I have used it in my soft keyboard: maxikeys.com
best regards
Hardy Henneberg
So is anyone else seeing double image if they dont film their subject in a sweet spot? Seems kind of pointless doesnt it? If I am filming stuff, I would prefer to not tell my subject that they cannot move beyond a certain zone.
Or... is my 3d defective?
edufur said:
So is anyone else seeing double image if they dont film their subject in a sweet spot? Seems kind of pointless doesnt it? If I am filming stuff, I would prefer to not tell my subject that they cannot move beyond a certain zone.
Or... is my 3d defective?
Click to expand...
Click to collapse
I only see issues if I am close to something, like a macro shot
Ive had the same problem. Taking 3D pictures of moving objects just doesn't work well.
dcyouknow said:
Ive had the same problem. Taking 3D pictures of moving objects just doesn't work well.
Click to expand...
Click to collapse
Without a quick enough shutter speed, taking pictures of moving objects period doesn't work well.
my problem isnt just moving objects. it is anything that is NOT in a certain zone. If the object being filmed is too close or too distant, it doubles (instead of 3d).
With 3d photography, there ARE limitations on distance.
Remember, a camera doesn't work like your eyes which are able to do more than just focus.
A camera lens is FIXED in a specific position and when you change your focal points the fixed position may be either to wide or, when focusing at distance, too narrow.
Movie makers and professional photographers are aware of this and can work around it. Specialized 3d photography actually uses 2 cameras in sync with a rail that separates the cameras based on the focal point.
Here's a simplified example of the rail for home use:
http://www.adorama.com/alc/article/How-to-Build-a-Two-Camera-Rig-for-Wiggle-3D
For what the evo and point and shoot 3d cameras do, it's just fine as long as you know the limitations of distance (both macro and >40ft or so)
Compusmurf said:
For what the evo and point and shoot 3d cameras do, it's just fine as long as you know the limitations of distance (both macro and >40ft or so)
Click to expand...
Click to collapse
I appreciate this info... but... my evo 3d is struggling with objects even > 8 feet.
is anyone else experiencing the same issue? should i take it back?
To get as close as possible to a perfect 3D experience for human eyes, a 3D camera needs its two lenses to be the same distance apart as our eyes are. Notice the 3VO's "eyes" are only 1.375" apart. My eyes are closer to 3" apart center to center. What it means is that the near and far extents of the view taken will either be hard to align for focus or impossible and thus ignored by one of our eyes or the other. Far elements won't have as much 3D impact anyway, except in contrast to near elements in the same scene. You'll notice broad distant landscape scenes aren't the choice shots as 3D samples. Pick scenes with foreground (not too close) and background (and even middle ground) elements to shoot, and your shots will turn out fine. Make sure your camera is level though. If you don't then you won't see the 3D effect until you re-create that tilted relationship between your eyes and the viewscreen.
If you want something that'll really show off the 3D on your 3vo, you have to get this movie.
clankfu said:
If you want something that'll really show off the 3D on your 3vo, you have to get this movie.
Click to expand...
Click to collapse
The IMAX Hubble 3D is really good too. the depth is almost too much. but great none the less.
Holy cow, yes! I use this one to: at around 21 minutes, the close-up of that fish popping out of the screen is amazing (they follow all the "rules" of 3D, so it looks fantastic).
Where can i get it?
.mkv works on evo?
pollo55 said:
.mkv works on evo?
Click to expand...
Click to collapse
Use the free app Handbrake to convert it to mp4. Search the forum, there are step by step instructions posted.
Does any one knows where can I get 3d movies
Sent from my PG86100 using XDA App
Forget the movie, what are these "rules" for 3D?
Kilmar said:
Forget the movie, what are these "rules" for 3D?
Click to expand...
Click to collapse
http://androidforums.com/htc-evo-3d/345384-3d-pop-out-clarified-violations-lead-discomfort.html
novox77 said:
I spoke with my neighborhood stereoscopy expert (30-years of experience, custom-built camera rig, home-theater setup with polarized projectors, etc.) and learned quite a bit about 3D imagery. Thought I'd share some general facts and other factors that cause eye strain and headaches.
Regarding images that pop out: already proven possible with the screen technology. But will the phone's camera be able to capture a subject and then show it popping out? Most likely, but not guaranteed.
In another thread, I incorrectly concluded that the focal point determines the threshold where things pop out or appear behind the screen. Actually that threshold is fixed based on the distance between the lens and the offset of the sensors behind the lenses. I have no visibility into how the E3D's sensors are set, so there's no way to guess what the zero parallax line lies. However, once the phone is released, it will be trivial to determine this by taking a picture of a ruler (or tape measure) that extends from the camera. If you overlay the stereo images in photoshop, the ruler will appear as a thin X. Where the convergence of the X is on the ruler will be the zero parallax line (aka point of convergence).
Objects farther from zero parallax will appear behind the display; objects closer will appear to pop out from the screen.
This article makes it really simple to understand:
STEREOSCOPIC (3D) FILMMAKING OVERVIEW Part 2
Commonly, the distance between cameras (aka the stereo base) is set to the human interocular distance (distance between human eyes), which is about 2.5". But there's no real reason why this needs to be enforced; it really depends on the scale of your subject. If you're taking a picture of insects, your camera lenses should be much closer together. If you're taking a picture of the grand canyon, the cameras should be very far apart. Again, that article above talks about why you may want to use cameras that are further apart. But a moot point for E3D since we can't adjust the cameras. But given that the Evo's cameras are kinda close together, the best 3D shots will be with subjects closer to the screen.
Onto the discomfort.
My source tells me that pop-out is actually not very desirable for two reasons:
1) it causes eye strain due to the need to focus on a point close to the eyes (cross-eye). Prolonged cross-eye is not comfortable.
2) when a pop-out object is cropped by the edge of the screen, our brain freaks out because it conflicts with reality. The object should appear in front of the edge and not be cut off. This is considered a violation of good stereoscopy and should be avoided.
Another violation is an exaggeration of depth where the distance between stereo images exceeds the interocular distance. This isn't going to be a problem with the Evo 3D's images, but this is much more common in a theater. Film producers sometimes push the limit to try to give the scene maximum depth by spacing out the parallax images. This can trigger instant headaches. Also if you sit too close to the screen, the problem becomes amplified.
He rattled off a few more violations that I can't recall, but basically he says that the violations are what make 3D gimmicky, and it's also responsible for the discomfort and inability to see in 3D for some subset of the public. When the rules of stereoscopy are obeyed, the results are spectacular and comfortable to view, because they simulate depth realistically.
Just sharing for those of you actually interested in the 3D capabilities of the phone.
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Thanks for the link and info on 3D. That was a pretty good read. I definitely feel the discomfort of items that pop out and are cut off by the boarder of the screen. Very surreal.
dca1970 said:
Where can i get it?
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You can get it from here but you'll have to convert it using Handbrake which is free.
Here's a tutorial:
I followed the tutorial with another 3D movie I had and it ended up looking great but the audio is choppy. Would MP3 perform better or should I try kicking the samplerate down to 44.1 or lower?
gthing said:
I followed the tutorial with another 3D movie I had and it ended up looking great but the audio is choppy. Would MP3 perform better or should I try kicking the samplerate down to 44.1 or lower?
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Not sure since I don't know crap about encoding videos but I followed that tutorial and all the movies I encoded turned out fine. Maybe it was a problem with that particular rip of your movie?
I followed the directions for converting the file and it's not in 3D. It plays but it's side by side videos.
plmiller0905 said:
I followed the directions for converting the file and it's not in 3D. It plays but it's side by side videos.
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You have to hit the menu button and switch to 3D mode.
clankfu said:
Not sure since I don't know crap about encoding videos but I followed that tutorial and all the movies I encoded turned out fine. Maybe it was a problem with that particular rip of your movie?
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Hmm ... thanks for your feedback. I tried watching the movie on my desktop and found it was messed up there as well, so it's not an issue with the phone player. I tested both aac encoders, the lame mp3 encoder, and even ac3 (each at various bitrates) with the same result. The original video (mkv) plays fine...
Edit: I tried another video and the settings worked fine. Not sure what the deal is with this particular video (Hubble 3D).
clankfu said:
You have to hit the menu button and switch to 3D mode.
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Thanks that worked
Wait so besides you can "look into" like a box, images can also "jump out"?
Nice!!! Or not, if i read that article lol.
daveeckert said:
Holy cow, yes! I use this one to: at around 21 minutes, the close-up of that fish popping out of the screen is amazing (they follow all the "rules" of 3D, so it looks fantastic).
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Wow - you're right. That part looks amazing! I'm going to try to rip just that clip tonight and put it up on Youtube so everyone else can see it.
As a side note, I've found that the angle to view 3d on my phone is not straight on. I have to hold it at a bit of an angle with the right side of the phone further away from my face than the left. Is that what everyone else is finding or are you guys viewing things pretty much dead on?
el_chamuco said:
Does any one knows where can I get 3d movies
Sent from my PG86100 using XDA App
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SBS or Side-By-Side is the key search term to find 3D movies. Just go to one of the usual places and search it.