Digital shallow depth-of-field adapter for photographs |
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Authors: | Kyuman?Jeong Dongyeon?Kim Soon-Yong?Park Email author" target="_blank">Seungyong?LeeEmail author |
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Affiliation: | (1) Dept. of Computer Sci. &Eng., POSTECH, Pohang, 790-784, Korea;(2) Mobile Communication Division, Samsung Electronics Co. Ltd., Suwon, 443-742, Korea;(3) Dept. of Computer Engineering, Kyungpook National University, Daegu, 702-701, Korea |
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Abstract: | This paper proposes a novel method to synthesize shallow depth-of-field images from two input photographs taken with different
aperture values. The basic approach is to estimate the depth map of a given scene using a DFD (depth-from-defocus) algorithm
and blur an input image according to the estimated depth map. The depth information estimated by DFD contains much noise and
error, while the estimation is rather accurate along the edges of the image. To overcome the limitation, we propose a depth
map filling algorithm using a set of initial depth maps and a segmented image. After depth map filling, the depth map can
be fine tuned by applying segment clustering and user interaction. Since our method blurs an input image according to the
estimated depth information, it generates physically plausible result images with shallow depth-of-field. In addition to depth-of-field
control, the proposed method can be utilized for digital refocusing and detail control in image stylization. |
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Keywords: | Depth-of-field control Depth estimation Depth from defocus Digital refocusing Image detail control |
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