Visit our corporate site. All rights reserved. England and Wales company registration number Top Bottom. Won't pick up OTA channels using antenna to coax inpu. Apr 29, Looking for a low budget cable ready tv.
Oct 29, Sep 4, Mar 5, Now I want the TV to connect to the Inte. Mar 4, Jan 18, Aug 14, Mar 2, Oct 14, Sep 24, Jun 10, Jun 2, Mar 13, This capacity to produce optimized 3D video that is both comfortable to view i. To recreate the experience of stereoscopic vision, where each eye sees a different image, 3D projectors rely on a solution called frame sequential 3D or page flipping whereby the video projected alternates between a frame to be viewed by the left eye and a frame to be viewed by the right eye and so on in sequence until the video ends.
Each frame is then directed to its corresponding eye via the 3D glasses worn by the viewer, which we will discuss later on in this article. Prior to this whole process though it is the 3D signal format that determines how each frame of the video is transmitted from the output source to the projector. As a consequence, the type of format used for the video will affect the quality of the 3D image. As of today, 3D video technology has settled on a few formats used to transmit 3D video which are supported by the vast majority of 3D ready projectors on the market, they include Side-by-Side, Top-and-Bottom or Over-and-Under , and Frame Packing.
The Side-by-Side format takes each frame transmitted to the projector and splits it in half vertically so that the left half of the frame contains the image meant for the left eye, and the right half of the frame contains the image meant for the right eye. Once the 3D ready projector receives the transmitted frame, it then takes each image within the frame and converts them into the individual frames intended for each eye and projects them out via the frame sequential 3D projection process.
The Top-and-Bottom or Over-and-Under format is similar to Side-by-Side in that each transmitted frame is split in half and each half is reprocessed by the projector for frame sequential 3D projection.
But in the case of Top-and-Bottom, the transmitted frame is split in half horizontally with the image for the left eye contained in the top half and the image for the right eye contained in the bottom half. As described above both Side-by-Side and Top-and-Bottom 3D video formats involve splitting the transmitted frame in half and placing an image meant for projection in each half. The projector then upscales these partial resolution images in the conversion process to produce the resolution of the projector.
To resolve this issue the Frame Packing format was introduced. Thus, with Frame Packing there is no upscaling and no image degradation involved. Because Frame Packing involves frames packed with full resolution images, the data and bandwidth needed for this format is larger than those needed for Side-by-Side or Top-and-Bottom.
As a result, the Frame Packing format is more commonly used in Blu-Ray 3D movies, while the Side-by-Side or Top-and-Bottom formats are typical for streaming or downloaded content. Another major factor that affects your ability to view high-quality 3D video is your choice of 3D glasses.
This is because 3D glasses are responsible for ensuring that the alternating left, right, and so on frames in the frame sequential 3D ecosystem are seen by the correct eye. There are 2 major types of 3D glasses on the market today: passive 3D glasses and active 3D glasses.
Bill Livolsi If you are like most consumers, you think " 3D Ready " means a projector is ready to display 3D in all its various forms. Well, that's not quite true. Many 3D Ready projectors are available right now, as you read this article, but 3D is still a confusing subject. What 3D signal sources will work with your 3D projector?
What do you need to know to make sense of all of this stuff? After finishing this article, you will know exactly what 3D is and how it works. Editor's note: This article has been updated to reflect the current state of 3D projection as of February But what does this logo actually mean?
In short: a 3D Ready projector will accept and display at least one stereoscopic 3D transmission format. By transmission format, we mean the 3D signal format used to transmit from your source--a computer, set-top box, game console, or Blu-ray player--to your projector. We are not talking about the difference between passive polarized 3D glasses and active shutter 3D glasses if you need more information about these display technologies, see our article "The 3D Renaissance ".
Comments 57 Post a Comment. I look forward to the day when Projector Central adds a "3D" category to their listing of "Popular Projectors". Thank you very much for this information.
Frame Packing is what I need than. Nice to know how it works. We do photography in 3D for a long time, and are using two projectors for this for a few years now. We share our photo's with others and use the Side by Side solution now. So to make it compatible with the BluRay we have to swich to the on top solution as well.
So the standard will be x or do we need to count the space too? If so how large must the file be? I have seen several demonstrations of 3D TV using the active glasses and so far I am unimpressed. After a few seconds the ghosting is distracting and there is something else flicker or jitter that is disturbing. I'll be waiting for the next generation to solve these problems. Great article! The NY Times should pick this article up. Exactly the information that needs to get out before people make too many mistakes.
Projectorcentral could also beef up its projector database to include more precise 3D information based on this article.
A warning "will not play 3D Blu-rays" would be helpful. It is possible for a given display device to support both of the above capabilities, while most will only support one or the other. It does not support v1. My next projector will support HDMI 1.
An excellent article, but it doesn't discuss the problems involved in projecting 3D with two, as opposed to a single "3D ready" projector. Currently 3D photographers often project 3D with two DLP projectors that are polarized in opposite directions - so that passive glasses can be used by the audience.
These projectors don't have to be "3D ready" to work, they are relatively inexpensive, and full HD resolution is possible with some models. I would like to know if is possible to project a blue ray 3D movie with two polarized projectors. The IMDB says there are new movies now in production. There are movies in 3D currently available.
Some of these are quite old films like "Jaws 3D" a truly terrible movuie. Most of the 3D catalog appears to be animated.
I don't see any chick flicks listed at all that's fine with me. That's still a lot of movies. Figure about 3D movies a year worth seeing. This may significant because porn was very important to the nascent video tape industry. It gave couples a way to see spicy material without visiting some XXX theater in a dangerous part of town.
However the web now has virtually unlimited free 2D porn. It remains to be seen if porn actually helps 3D sales. The third dimension means you need double the data rate so you can only get p with sequential, and no matter whether you split the frame horizontally, verically or into blocks you have to reduce the frame pixel count.
With the slowdown in fiber rollout it looks like US Internet streaming will be limited for the forseeable future to about 5Mbps for most people. NetFlix manages to get a sort-of p HD streaming with advanced compression techniques - but not p. This means probably no 3D streaming for maybe 5 years. Ultimately, I expect the polarized approach to win because the cost of multiple shutter glasses and inherent physiological problems are more difficult with shutter glasses.
Also ideally, each channel left or right eye is based on a companies' standard projector product, thus the 3D performance would not lag the latest non 3D projectors.
Of course the cost will be double that of a comparable non 3D projector. Other unique aspects of the 3D projector should include optically combining both channels into one output lens.
TI DMD field sequential color is also a lot easier to keep converged and combine into the final output lens. Lumen limitations of LEDs would be mitigated by not throwing away polarized light and the fact that reflective screens tend to have high gain.
Not correcting for this would make moving objects appear closer or farther than intended or a pendulum to move in a circle instead of side to side. Ideally, several input formats should be compatible including a new one 24 Hz progressive per eye at by compressed to fit into non-dual link HDMI bandwidth. If 24 Hz can not be achieved, then 20 Hz could be used with appropriate frame interpolation. Bottom line is a stereo projector without compromised performance when compared to non stereo projectors without eye strain.
Also compatible with blu ray technology and very do-able with a Playstation 3 firmware push.
0コメント