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Assignment #2 – Light Field Camera (part II)

October 21, 2010

Now it’s time to show the results with my own photos. I’ve setup a scene where a bath curtain hides some objects behind it’s green stripes. The results were very interesting, so I’ll start with a challenge. Here’s one of the original pictures I’ve taken for this experiment:

Can you read who's the author of the book?

Can you read who's the author of the book?

Unless you’re very familiar with this particular book (for those asking what book, it is around the top-right-most part of the photo, behind the curtain), I guarantee that’s almost impossible to guess. So let’s see the results from the composed photos:

Focusing at the curtain, the mystery persists...

Focusing at the curtain, the mystery persists...

Tada... Can you read now? Try clicking on the picture to see the larger version.

Tada... Can you read now? Try clicking on the picture to see the larger version.

This last one is focused on the wall on the back.

This last one is focused on the wall on the back.

The most difficult part was to align the photos after they were taken. I didn’t have time to build an automatic gantry, so I used a millimetric ruler and some hacks (double sided tape, paper as a slider, stable surface for the camera mount…) to have the correct distance between each photo.

The photo gallery at the end contains all the aligned photos (without any post-processing besides the basic shift pre-matching) and the resulted composites. All original photos were taken with the following setup:

  • Nikon D3000 (APS-C sensor)
  • Aperture f32
  • Focal length 55mm
  • Quality settings: JPG, fine, medium size

The source code that was used can be downloaded from here.

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