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    Independent Mixed-gamma Variables for Modelling Rainfall by Roslinazairimah, Zakaria, Nor Hafizah, Moslim

    Published 2015
    “…The Kolmogorov–Smirnov and Anderson–Darling goodness of fit tests are used to assess the fit between the observed sum and the generated sum of independent mixed-gamma variables. In both cases, the observed sum is not significantly different from the generated sum of independent mixed-gamma model at 5% significance level. …”
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    Conference or Workshop Item
  19. 479

    Carrier-independent deep optical watermarking algorithm by Hao CHEN, Feng WANG, Weiming ZHANG, Nenghai YU

    Published 2022-08-01
    “…With the development of multimedia techniques, the demand for copyright protection of digital products has also gradually risen.Digital watermarking is an effective means to protect the copyright of digital products.It is generally made by adding important identification information (i.e., digital watermark) to a digital carrier (e.g., text, image, etc.), so that the carrier carries the identification information but does not affect the normal use of the carrier.The common digital watermark embedding scheme is to embed the watermark information by modifying the carrier via specific algorithms.In the actual application scenarios, there are many images or objects to be protected (such as art paintings, etc.) that are not allowed to be modified.Based on this background, a new carrier-independent deep optical watermarking algorithm was proposed, which can realize watermark information embedding without modifying the original carrier and achieve the purpose of copyright protection.Specifically, a new watermark template expression scheme at the embedding end was proposed, which expressed the watermark information by visible light modulation.By analyzing the visual system of human eyes, a watermark template pattern based on alternating projection was proposed to embed the watermark information, which made the embedding process neither require modification of the original carrier nor affect the visual senses of human eyes.At the extraction end, a watermark extraction network based on residual connection was designed, and the captured watermarked images were fed into this network after perspective transformation to extract the watermark information.The experiments were conducted under various conditions and comparisons with three baseline algorithms were made.The experimental results show that the proposed algorithm generates watermarked images with less visual distortion and is robust to the "projecting-shooting" process.The watermark extraction network has high accuracy in extracting watermark information at different distances, angles and illumination conditions, and has certain advantages over other general networks.…”
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  20. 480

    Logics of Statements in Context-Category Independent Basics by Uwe Wolter

    Published 2022-03-01
    “…We show how to define, in a category independent way, arbitrary first-order statements in arbitrary contexts. …”
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