Nuit Blanche posted an interesting link and comments on the recent OSA Optics Letters paper proposing lens-less image capture in Fourier domain:
A Micro-Scale Camera Using Direct Fourier-Domain Scene Capture
Patrick Gill, Changhyuk Lee, Dhon-Gue Lee, Albert Wang, and Alyosha Molnar
We demonstrate chip-scale (< 1mm2) sensor, the Planar Fourier Capture Array (PFCA), capable of imaging the far field without any off-chip optics. The PFCA consists of an array of angle-sensitive pixels manufactured in a standard semiconductor process, each of which reports one component of a spatial 2D Fourier transform of the local light field. Thus, the sensor directly captures 2D Fourier transforms of scenes. The effective resolution of our prototype is approximately 400 pixels.
Here is the Fourier pixel idea:
Thanks to IC for sending me the link!