Automatic Flare Spot Artifact Detection and Removal in Photographs

• URL: http://arxiv.org/abs/2103.04384v1
• Date: Sun, 7 Mar 2021 15:51:49 GMT
• Title: Automatic Flare Spot Artifact Detection and Removal in Photographs
• Authors: Patricia Vitoria and Coloma Ballester
• Abstract summary: Flare spot is one type of flare artifact caused by a number of conditions. In this paper, we propose a robust computational method to automatically detect and remove flare spot artifacts.
• Score: 4.56877715768796
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Flare spot is one type of flare artifact caused by a number of conditions, frequently provoked by one or more high-luminance sources within or close to the camera field of view. When light rays coming from a high-luminance source reach the front element of a camera, it can produce intra-reflections within camera elements that emerge at the film plane forming non-image information or flare on the captured image. Even though preventive mechanisms are used, artifacts can appear. In this paper, we propose a robust computational method to automatically detect and remove flare spot artifacts. Our contribution is threefold: firstly, we propose a characterization which is based on intrinsic properties that a flare spot is likely to satisfy; secondly, we define a new confidence measure able to select flare spots among the candidates; and, finally, a method to accurately determine the flare region is given. Then, the detected artifacts are removed by using exemplar-based inpainting. We show that our algorithm achieve top-tier quantitative and qualitative performance.

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