| LICENSE Agreement of BlueNeg Data Set version 1.0
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| Dated: 2024-06-12
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| License document prepared by Tien-Tsin Wong
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| All photographs/negatives in this data set are owned and
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| copyrighted by Tien-Tsin Wong.
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| Why BlueNeg?
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| This set of images is collected for studying the research problem of
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| restoring the corrupted negative films. Due to the physical nature of
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| negative film, the red, green, and blue light-sensitive layers are
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| located differently inside the negative film. Therefore, the rates of
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| deterioration of these three layers are different. I found that the
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| blue channel is relatively vulnerable compared to the other two channels.
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| Because the blue light-sensitive layer is on the outermost layer on
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| the emulsion side. That is, the deterioration rates are heterogeneous.
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| This characteristic is inherited from its ancestor, i.e., storing the
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| three color negatives (R, G, B) on three separate glass plates by
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| Prokudin-Gorsky.
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| Since the blue channel is more vulnerable and the other two channels
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| are relatively well-preserved, this means we can restore the blue
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| channel by exploiting the retained information from the red and green
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| channels to restore the color photograph. This is especially sound with
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| the latest AI technologies.
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| Unfortunately, most existing photo restoration techniques are
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| developed based on printed photographs, in which the nature
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| of deterioration is different from that of the negatives.
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| This is why I have scanned a collection of negatives I have shot
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| during 1980s to early 2000, for this research.
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| How to Obtain Permission?
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| All photos are owned and copyrighted by Tien-Tsin Wong. You are
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| automatically granted with permission to use the images for academic
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| and commerical usages, provided that the image credit
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| "Copyrighted by Tien-Tsin Wong" is included in any forms of
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| publication, reproduction, redistribution, or derivatives of the images.
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| If you find the dataset is useful to you, please also cite our
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| publication below in your work/publication.
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| - Hanyuan Liu, Chengze Li, Minshan Xie, Zhenni Wang, Jiawen Liang, Chi-Sing Leung, and Tien-Tsin Wong,
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| "BlueNeg: BlueNeg: A 35mm Negative Film Dataset for Restoring Channel-Heterogeneous Deterioration",
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| arXiv preprint, 2024.
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