3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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YouTube Now Offers 2D to 3D Video Conversion Functionality

September 25th, 2011 · 5 Comments · 2D to 3D Conversion


YouTube has announced new interesting functionality for the stereo 3D community, namely the ability to convert the 2D videos you have uploaded into 3D format automatically with just a few clicks. This is of course a beta functionality and as with other autoconversion solutions it might not work perfect with all kinds of videos, so you should try with different videos and see what works best for you. You should also be aware that the level of quality that the 2D to 3D conversion YouTube offers will not be as good as properly shot video with a 3D camera. But since still not a lot of people do have 3D-capable recording hardware YouTube’s 2D to 3D conversion feature probably is a way to help push more 3D content. The embedded video above is something I’ve shot with a 2D camera and converted into 3D using the YouTube 2D to 3D conversion feature. Have in mind that when you request a 2D to 3D conversion your original 2D video will remain and it will get a 3D button available in the YouTube player. And when you hover your mouse over the 3D button it will say “Converted from 3D”, a good way to differentiate 3D videos uploaded as such as converted to 3D videos, but probably not good enough to quickly differentiate them. The conversion process currently can take a while, especially if you have a longer video file that you want to see converted to 3D, so be patient…



And now for a quick guide on how to use the 2D to 3D conversion feature of YouTube. First off you need to login to your YouTube account and open the video you want to convert into 3D from the list of videos you’ve uploaded. You need to be on the page with the video details that you normally open when you are watching a video on YouTube, not on the page with all your uploads listed in your account. What you need to do now is click on the “Edit info” button that you will see right below the YouTube logo (the first button), make sure you click this one and not the Edit video button.



after clicking the “Edit info” button you will see a new menu shown at the position you’ve had the button you’ve just clicked. Now you have on the “3D Video” button in order to tell YouTube you are going to be working with a 3D video, this is also the new way of telling YouTube that a video you have uploaded is in 3D format and not using the yt3d tag anymore. For the 2D to 3D conversion feature to appear you need to select the “Single image in frame (normal video)”, if you select the 2 images in the same frame it would mean that a video you’ve uploaded is already in 3D format and you just need to let YouTube know what is the right format.



Now what is left to do is click on the tick the box in front of the “Enable 3D conversion for this video” and then click on the “Save Changes” button. It is very important that you save the changes, because unless you do that the conversion to 3D of the video will not start. After clicking the Save button you will see a message that the conversion has started and it will take a while, and it does take a while, especially for longer videos, so you can take your time and do something else and not stay on the YouTube page constantly refreshing. It is good idea to start with shorter videos at first just to experiment and not wait that much time for the conversion to finish just to see that the 3D effect isn’t that good after the conversion.

Have in mind that while YouTube’s 2D to 3D conversion feature does quite good it is not a complete and recommended replacement for a standalone software that does a 2D to 3D conversions, especially if you want to convert long and high-resolution videos or even movies. When you upload a video to YouTube it gets recompressed to further reduce size and there is some loss of quality and 2D to 3D autoconversion solutions are sensitive to image quality. So if you try to autoconvert a lower resolution and not very good quality video to 3D due to the processing by YouTube after the upload and in the 3D conversion process (you have no control whatsoever on that at the moment) the resulting clip may be a total disappointment. And with all that said, you should also be well aware of the fact that although autoconversion solutions making 3D video from a 2D source may seem quite convincing at times it is still inferior to video shot with a real 3D hardware. So don’t go converting 2D to 3D video just so that you can complain it isn’t very good, we all know that very well already…

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Acer GR235H is a New 23-inch Passive 3D LCD Monitor

September 14th, 2011 · 7 Comments · General 3D News


Acer is one of the most active maker of 3D-capable computer monitors and they just announced another 3D model, this time it is a more affordable 23-inch Full HD display using passive polarizing filter or FPR (Film-patterned Retarder) technology and passive 3D glasses. The monitor comes bundled with a pair of 3D glasses and the TriDef 3D software that you need to use for gaming in stereo 3D mode and the playback of 3D multimedia content. There is also apparently a built-in 2D to 3D autoconversion functionality that you can activate from the OSD menu on the monitor and as it is not tied to software you should be able to use it with just about any content such as non-3D photos, movies and even games. The monitor uses a LED backlight and comes with a 2ms TN non-glossy panel, it has only VGA and HDMI inputs (they should be HDMI 1.4) and has built-in speakers, you can see the detailed specifications below…

Acer GR235H 3D Monitor Specifications:

- Display size: 23-inch (diagonal) 3D LCD
- Active Display Area: 509.76×286.74mm
- Contrast Ratio: 100,000,000:1 Max. (Dynamic)
- Brightness: 250 cd/m2
- Response Time: 2ms
- Maximum Resolution: 1920×1080
- Maximum Refresh Rate: 60 Hz
- Pixel Pitch: 0.265 mm
- Panel Technology: Twisted nematic (TN), 6bit + Hi-FRC
- Number of Colors: 16.7 million
- Screen Treatment: Non-Glare
- Viewing Angles (CR = 10): Horizonal: 170°, Vertical: 160°
- Input Signal: VGA, 2x HDMI (with HDCP)
- Speakers: 1.5W x 2
- VESA Wall Mounting: 100 x 100 mm
- Power Consumption (Energystar On): 31.7W (typical)

Apparently the monitor is hitting Europe this month with a price of €222 Euro as well as some Asian markets and will probably soon be available in other regions as well. I’ve actually heard about this model quite a long time ago, so I was a bit surprised that the announcement was delayed so much (it was expected to appear around March), but then again Acer had some delays with all of its 3D-capable models released this year. What is still missing is the new 27-inch Acer HS274H HDMI 1.4-enabled 3D monitor using Acer’s active shutter glasses that was also expected to be released earlier this year, even a bit before the GR235H. But now it seems that LG will have some more competition in the area of passive 3D monitors, although the big winner from all this is apparently DDD as all of the new passive 3D monitors seems to be bundled with their TriDef 3D software.

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Gimpel3D is a Free 2D to 3D Stereo Conversion Editor for Images

July 4th, 2011 · 2 Comments · 2D to 3D Conversion


Gimpel3D is a free application that can help you convert a single 2D image or image sequence into stereoscopic 3D written by René Gimpel. Have in mind that this is not like the traditional 2D to 3D autoconversion solutions that do everything by themselves, you have to do a lot of things manually to make it work, but the end result can be much more convincing than that of an automatic conversion software. Gimpel3D uses a combination of traditional approaches as well as a proprietary projective modeling system that is used to actually remodel the 2D image into a something that resembles a true 3D scene that can be rendered into a realistically looking stereoscopic 3D image. The user works in true proportional space where the scene can be viewed from any location and the scene is edited geometrically in space using tools specifically designed to work with the perspective projection of the image. So in order to be able to work with this software, some previous experience with 3D modeling and animation software packages may be of great help. And if you are totally new into stereo 3D, then this software may be quite hard to understand and use, so you better start with something more automated.

- For more information about the free Gimpel3D 2D to Stereo 3D Conversion software…

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