Using the combination of the mask and the post-processing software, MERL researchers were able to reconstruct a 4D light field from the standard 2D camera, explained MERL Visiting Scientist Amit Agrawal. Instead of bending light rays, the patterned mask attenuates the rays inside the camera. The post-processing software reconstructs the light field using an inverse computation of the Fourier transform equation, allowing the user to refocus the image.The article has a slideshow, including some sample images. For some reason, they seem a bit dull, a bit like the images taken with digital cameras from 10 years ago; I wonder whether this is a result of the image reconstruction algorithm.
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