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Bokeh Effect Algorithm using Defocus Map in Single Image  

Lee, Yong-Hwan (Dept. of Digital Contents, Wonkwang University)
Kim, Heung Jun (College of Natural Sciences, Department of Computer Software, Kyeongsang National University)
Publication Information
Journal of the Semiconductor & Display Technology / v.21, no.3, 2022 , pp. 87-91 More about this Journal
Abstract
Bokeh effect is a stylistic technique that can produce blurring the background of photos. This paper implements to produce a bokeh effect with a single image by post processing. Generating depth map is a key process of bokeh effect, and depth map is an image that contains information relating to the distance of the surfaces of scene objects from a viewpoint. First, this work presents algorithms to determine the depth map from a single input image. Then, we obtain a sparse defocus map with gradient ratio from input image and blurred image. Defocus map is obtained by propagating threshold values from edges using matting Laplacian. Finally, we obtain the blurred image on foreground and background segmentation with bokeh effect achieved. With the experimental results, an efficient image processing method with bokeh effect applied using a single image is presented.
Keywords
Bokeh Effect; Depth Map; Defocus Blur; Image Blurring; Image Post-processing;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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