2022-03-022022-03-022021-11-16Sankaranarayanan, Aswin, Veeraraghavan, Ashok, Hendricks, Lisa A., Baraniuk, Richard, Ayremlou, Ali and Asif, Salman M., "Lensless imaging system using an image sensor with one or more attenuating layers." Patent US11178349B2. issued 2021-11-16. Retrieved from <a href="https://hdl.handle.net/1911/112002">https://hdl.handle.net/1911/112002</a>.https://hdl.handle.net/1911/112002A lens-free imaging system for generating an image of a scene includes an electromagnetic (EM) radiation sensor; a mask disposed between the EM radiation sensor and the scene; an image processor that obtains signals from the EM radiation sensor while the EM radiation sensor is exposed to the scene; and estimates the image of the scene based on, at least in part, the signals and a transfer function between the scene and the EM radiation sensor.22engUtility patentUS11178349B2