TR2006-124
| Coded Exposure Photography: Motion Deblurring using Fluttered Shutter | |||
| Citation: | * Raskar, R.; Agrawal, A.; Tumblin, J., "Coded Exposure Photography: Motion Deblurring Using Fluttered Shutter", ACM Transactions on Graphics (TOG), ISSN: 0730-0301, Vol. 25, Issue 3, pp. 795-804, July 2006 | ||
| Date: | July 2006 | ||
| MERL Contact: | Amit Agrawal | ||
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 illposed problem. Rather than leaving the shutter open for the entire exposure duration, we "flutter" the camera's shutter open and closed during the chosen exposure time with a binary pseudo-random sequence. The flutter changes the box filter to a broad-band filter that preserves high-frequency spatial details in the blurred image and the corresponding deconvolution becomes a well-posed problem. We demonstrate that manually-specified point spread functions are sufficient for several challenging cases of motion-blur removal including extremely large motions, textured backgrounds and partial occluders. | |||
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