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• W4386065576 abstract "Artificial light sources are often powered by an electric grid, and then their intensities rapidly oscillate in response to the grid's alternating current (AC). Interestingly, the flickers of scene radiance values due to AC illumination are useful for extracting rich information on a scene of interest. In this paper, we show that the flickers due to AC illumination is useful for intrinsic image decomposition (IID). Our proposed method conducts the light source separation (LSS) followed by the IID under AC illumination. In particular, we reveal the ambiguity in the blind LSS via matrix factorization and the ambiguity in the IID assuming the diffuse reflection model, and then show why and how those ambiguities can be resolved via a physics-based approach. We experimentally confirmed that our method can recover the colors of the light sources, the diffuse reflectance values, and the diffuse and specular intensities (shadings) under each of the light sources, and that the IID under AC illumination is effective for application to auto white balancing." @default.
• W4386065576 created "2023-08-23" @default.
• W4386065576 creator A5021743744 @default.
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• W4386065576 date "2023-06-01" @default.
• W4386065576 modified "2023-09-27" @default.
• W4386065576 title "Light Source Separation and Intrinsic Image Decomposition under AC Illumination" @default.
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• W4386065576 doi "https://doi.org/10.1109/cvpr52729.2023.00555" @default.
• W4386065576 hasPublicationYear "2023" @default.
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