Ssenkahdavic said:
They call it 1920x1080p because the final product (what you see in 3D) IS 1920x1080. Try this out. next time you are at a 3D movie, close one of your eyes. What do you see? You see a 2D image in the exact same resolution as the full feature (just without the 3D effects) I am betting when we get Top/Bottom 1080p in 3D, and you close one of your eyes, you will see the same 1920 horizontal, but you will only get half of the visual data out of the vertical. Your left eye see's 1920x540 on the top and the right on the bottom, but we do not see with only one eye, so in reality we are seeing both added together (just like how the human eye works). It is just like Checkerboard 3D. In that method if the final product is 1920x1080, you are really only seeing 960x540 PER eye, like this: 12121212 21212121 (1 = left 2 = right) Our brains are designed to function this way normally (adding things from right and left, front to back, etc to get a total) This does not mean that it cannot work other ways (why pirates can function with only one eye :) the final product IS 1920x1080, even tho the data sent to each eye is only half of that (both vertically and horizontally). Make sense? Top/Bottom uses this same format, just in a different way (but our brain is smart enough to put it together...atleast for MOST people) Now, with Framepacking (having 2 full 1080p signals for each eye) you will end up with more overall data at the end (double top/bottom). This would be something siimalar to the different between 720p and 1080p. The more data there is avalable, the better the quality of the picture is (whether you can see it or not does not matter, it is just the fact that it IS better) |
I think your missing the mark there, your confusing the placement of the frames in the bandwidth space with what you'll see on the screen. If you had a to portion of a 1920x1080 frame, 1920x540, going to one eye, and the bottom of half of the 1920x1080 frame going to the other eye, you wouldn't have any overlapping pixels, your right eye would see the bottom half of a screen, and your left eye would see the top half!
Basically, what I said, it might be some sort of cross eyed interlace, except it really describe the format as such. it just says the each eyes 1080 frame is subsampled to half resoulution vertical, it's not chopped, it's averaged down to 540. And the same thing happens to the other eye's frame. But it doesn't explain what the tv doe's with this, doe's it stretch each 540 frame back to 1080? Probably. Doe's each eye's frame subsample the whole vertical frame, or doe's it just give odd lines to the left eye and even lines to the right eye? It doesn't say that, that would be a cross eyed interlace (my description) which has been done before. So if it's just averaging down, then doubling back up on the tv, how can they call it a 1080p format? It's a 540p format upscaled to 1080p, right? I guess we will have to dig deeper for clarification on the top and bottom format.
