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Coded Exposure Photography: Motion Deblurring using Fluttered Shutter Ramesh Raskar Amit Agrawal
 

Summary: Coded Exposure Photography: Motion Deblurring using Fluttered Shutter
Ramesh Raskar Amit Agrawal
Mitsubishi Electric Research Labs (MERL), Cambridge, MA
Jack Tumblin
Northwestern University
(a) Blurred Image
(b) Rectified Crop
(c) Deblurred Image
Figure 1: Coded exposure enables recovery of fine details in the deblurred image. (a) Photo of a fast moving vehicle. (b) User clicks on four
points to rectify the motion lines and specifies a rough crop. (c) Deblurred result. Note that all sharp features on the vehicle (such as text)
have been recovered.
Abstract
In a conventional single-exposure photograph, moving objects or
moving cameras cause motion blur. The exposure time defines a
temporal box filter that smears the moving object across the image
by convolution. This box filter destroys important high-frequency
spatial details so that deblurring via deconvolution becomes an ill-
posed problem.
Rather than leaving the shutter open for the entire exposure du-
ration, we "flutter" the camera's shutter open and closed during

  

Source: Agrawal, Amit - Mitsubishi Electric Research Labs

 

Collections: Engineering