Sökning: "Digital Watermarking"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Digital Watermarking.

  1. 1. Analyzing the efficacy of the FFT in Image Denoising and DigitalWatermarking

    Kandidat-uppsats, Mälardalens universitet/Akademin för utbildning, kultur och kommunikation

    Författare :Emil Fagerström; [2023]
    Nyckelord :FFT; Image Denoising; Digital Watermarking;

    Sammanfattning : The FFT has been a staple in the field of mathematics and computer science for almost 60 years. And yet, it still endures as an efficient algorithm in a multitude of fields. LÄS MER

  3. 2. Utvärdering utav benfintliga metoder för synlig digital vattenmärkning av statiska bilder

    Kandidat-uppsats, Lunds universitet/Högskoleingenjörsutbildning i datateknik

    Författare :Tobias Bengtsson; [2012]
    Nyckelord :synlig digital vattenmärkning bilder; Technology and Engineering;

    Sammanfattning : Digital watermarking is done by adding a piece of data to a signal, which depending on the target media type, may be a picture, audio or video signal. The purpose of this additional signal is to provide a consistent signature linked to the original source which then remains through the act of copying. LÄS MER

  4. 3. Independent Domain of Symmetric Encryption using Least SignificantBit : Computer Vision, Steganography and Cryptography Techniques

    Magister-uppsats, Högskolan Dalarna/Datateknik

    Författare :Bhupathi Rajan Guruswamy Aarumugam; [2011]
    Nyckelord :Image watermarking; LSB; Vigenere Square; AI Techniques; Computer Vision; Steganography and Cryptography;

    Sammanfattning : The rapid development of data transfer through internet made it easier to send the data accurate and faster to the destination. There are many transmission media to transfer the data to destination like e-mails; at the same time it is may be easier to modify and misuse the valuable information through hacking. LÄS MER

  5. 4. Singular Value Decomposition and Discrete Cosine Transform based Image Watermarking

    Magister-uppsats, Blekinge Tekniska Högskola/Avdelningen för för interaktion och systemdesign

    Författare :S.M. Rafizul Haque; [2008]
    Nyckelord :Image Watermarking; SVD; DCT;

    Sammanfattning : Rapid evolution of digital technology has improved the ease of access to digital information enabling reliable, faster and efficient storage, transfer and processing of digital data. It also leads to the consequence of making the illegal production and redistribution of digital media easy and undetectable. LÄS MER

  7. 5. Modulation for interference avoidance on the AWGN channel

    Master-uppsats, KTH/Kommunikationsteori

    Författare :Jinfeng Du; [2006]
    Nyckelord :Costa precoding; dirty paper coding; interference avoidance; Tomlinson-Harashima precoding;

    Sammanfattning : Theoretic results have shown that the capacity of a channel does not decrease if the receiver observes the transmitted signal in the presence of interference, provided that the transmitter knows this interference non-causally. That is, if the transmitter has non-causal access to the interference, by using proper precoding this interference could be “avoided” (as if it were not present) under the same transmit power constraint. LÄS MER