Dappled Photography: Mask Enhanced Cameras for Heterodyned Light Fields and Coded Aperture Refocusing Ashok Veeraraghavan, Ramesh Raskar, Amit Agrawal, Ankit Mohan & Jack Tumblin Mitsubishi Electric Research Labs (MERL), Cambridge, MA, USA Northwestern University, IL Coded Exposure [Raskar, Agrawal, Tumblin SIGGRAPH 2006] Coded Exposure (Flutter Shutter) Camera Raskar, Agrawal, Tumblin [Siggraph2006] Coding in Time: Shutter is opened and closed Blurring == Convolution Sharp Photo Blurred Photo PSF == Sinc Function ω Traditional Camera: Shutter is OPEN: Box Filter Coded Exposure Sharp Photo Blurred Photo PSF == Broadband Function Preserves High Spatial Frequencies Flutter Shutter: Shutter is OPEN and CLOSED Coded Traditional Exposure Deblurred Deblurred Image Image Image of Static Object How to handle focus blur? Coded Exposure Coded Aperture Temporal 1-D broadband code: Spatial 2-D broadband mask: Motion Deblurring Focus Deblurring Point light source (LED) In Focus Photo Out of Focus Photo: Open Aperture