Anaglyphs are what I call the "home made 3D".
Why because you can do it at home with the stuff bought from the nearest stationary.
Anaglyphs are oldest form of 3D.
Step by step guide to shoot 3D anaglyphs photographs:
You need:
1) Red cyan glasses - take a white cardboard and make one- you can buy red cyan transparent sheets from the stationary. We went to a shop where the cinematographers buy their filters from so the sheets were relatively wrinkle free.
2) Software to merge left and right glasses: Takashi for me was the fountainhead of inspiration. He had the software available on his site. www.stereoeye.jp
3) The above is a quick fix. One can use adobe and then adjust the two layers. One can also choose which object one needs to focus on etc.
Monday, June 14, 2010
What is 3D: The basics of mechanism and technology
Man has two eyes. While one eye is sufficient to see, two eyes are required for giving it a dimensionality or sense of depth. How does that work?
The human eye is around 4 cm apart (approx.) each eye views from a different angle and generates a unique image.
For an exercise hold a bottle in front of your eye. Look at it and then you will see the difference in the angle+image of your right eye and angle+image of your left eye.
Both these images reach your brain and they are merged to create a single image. The difference between the images gives your a brain an idea of the z axis - the depth.
----
When you see an image from a single source like a painting or a TV, both your eyes see the same image. The trick is to make your each eye see a different image. Hence all the 3D image viewing requires mechanisms to ensure that your right eye sees slightly different than your left eye (basically extend real world to that image). And hence all 3D viewing requires the viewer to wear the crazy 3D goggles (there is an exception autostereoscopy but that restricts the head movement or number of people who can watch at the same time).
Now the goggles employed to separate the image viewed by the right and the left eye could be of various types depending on what method you are employing to mark the separation between the two images:
1) Anaglyphs - Red Cyan glasses
2) Polarizer - Polarized glasses
3) Alternate frame sequencing - with Alternate Shutter glasses(called head gear)
4) Texas DLP technology (copyrighted) that has mirrors corresponding to a chip corresponding to each pixel
We will discuss each of them as we move up.
But note- 3D is not just about mastering the technology. 3D is about framing right and knowing how to frame so that the 3D effect is maximized.
For example - converging lines don't work in 3D and lots of other crazy tips I would share as we go ahead.
The human eye is around 4 cm apart (approx.) each eye views from a different angle and generates a unique image.
For an exercise hold a bottle in front of your eye. Look at it and then you will see the difference in the angle+image of your right eye and angle+image of your left eye.
Both these images reach your brain and they are merged to create a single image. The difference between the images gives your a brain an idea of the z axis - the depth.
----
When you see an image from a single source like a painting or a TV, both your eyes see the same image. The trick is to make your each eye see a different image. Hence all the 3D image viewing requires mechanisms to ensure that your right eye sees slightly different than your left eye (basically extend real world to that image). And hence all 3D viewing requires the viewer to wear the crazy 3D goggles (there is an exception autostereoscopy but that restricts the head movement or number of people who can watch at the same time).
Now the goggles employed to separate the image viewed by the right and the left eye could be of various types depending on what method you are employing to mark the separation between the two images:
1) Anaglyphs - Red Cyan glasses
2) Polarizer - Polarized glasses
3) Alternate frame sequencing - with Alternate Shutter glasses(called head gear)
4) Texas DLP technology (copyrighted) that has mirrors corresponding to a chip corresponding to each pixel
We will discuss each of them as we move up.
But note- 3D is not just about mastering the technology. 3D is about framing right and knowing how to frame so that the 3D effect is maximized.
For example - converging lines don't work in 3D and lots of other crazy tips I would share as we go ahead.
Sunday, June 13, 2010
3D genesis
Was it avataar, or how to train a dragon, or zenish's super cool 3D glasses or Takashi's software.
I started work on 3D in my bedroom, clicking biscuit packet's picture, ,y own picture, picture from the window etc. I had only one camera not two. So or me clikcing anything moving was impossible. So the sea and the birds were out of reach. Clicking my own self was difficult as whe ni moved to move the camera, I moved, so it iwas difficult to get exact identical frames.
Anyways my first successful photo was this:
And I knew I was ready to go!
I started work on 3D in my bedroom, clicking biscuit packet's picture, ,y own picture, picture from the window etc. I had only one camera not two. So or me clikcing anything moving was impossible. So the sea and the birds were out of reach. Clicking my own self was difficult as whe ni moved to move the camera, I moved, so it iwas difficult to get exact identical frames.
Anyways my first successful photo was this:
And I knew I was ready to go!
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