DIY Camera Array 2: Computational Refocusing With Just One Camera

Step 3 Refocusing with LFtextures.

This is where LFtextures comes in. Matti Kariluoma wrote LFtextures in C with OpenGL. The primary purpose of LFtextures is to allow you to easily do this refocusing.

So go download it already. :) To install it, just unzip the contents of the folder. To start it, just click on "lftextures.exe" and wait.

To refocus, LFtextures makes all the images transparent, and lays them on top of each other. By scrolling the mouse wheel, you are able to refocus your captured image by shifting the images relative to each other. By pressing "P" you save a copy of your refocused image in the working directory of lftextures.

We provide a couple of data sets for you to play with, but we hope you'll go try capturing your own. To use them, just copy your images into the "lf" directory that comes in the LFtextures archive. Be sure to delete the ones that are there already.

Please remember that LFtextures only works if your images are perfectly evenly spaced. If you get nothing else from this Instructable, please get that your images must be on a single line and perfectly spaced!!!


That's it for the moment. The next few articles will be about how to build the array we built, which makes a lot more interesting things possible.