The lensless DiffuserCam consists of a diffuser placed in front of a sensor (bumps
on the diffuser are exaggerated for illustration). The system turns a 3-D scene into a 2-D image on the sensor. After a one-time calibration, an algorithm is used to reconstruct 3-D images computationally. The result is a 3-D image reconstructed from a single 2-D measurement.