Sökning: "Image watermarking"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Image 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. A study in how to inject steganographic data into videos in a sturdy and non-intrusive manner

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Julius Andersson; David Engström; [2019]
    Nyckelord :Steganography; Steganalysis; Watermarking; Information hiding; Cryptography; Compression; Non-intrusive; Sturdy; JPEG; Steganografi; Steganalys; Vattenmärkning; Kryptografi; Kompression; Icke störande; Stabil; JPEG;

    Sammanfattning : It is desirable for companies to be able to hide data inside videos to be able to find the source of any unauthorised sharing of a video. The hidden data (the payload) should damage the original data (the cover) by an as small amount as possible while also making it hard to remove the payload without also severely damaging the cover. LÄS MER

  4. 3. Watermarking Video Game Textures

    Kandidat-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Pedram Khoshdani; [2013]
    Nyckelord :watermarking; image; texture; dds; dxt; bc;

    Sammanfattning : How amazing would it be to prevent illegal copies of computer games? Game developers work with the hope that they can make good profit out of their games, but when they know that they would not sell much they will be so disappointed and that is because once a few original copies of their games are released, soon or late, there will be illegal copies available in the market. Working on how to distinguish between a legal copy and an illegal copy is the general topic of this thesis. LÄS MER

  5. 4. 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

  7. 5. Bildmanipulation med GD-biblioteket i PHP

    M1-uppsats, Institutionen för datavetenskap, fysik och matematik, DFM

    Författare :Henrik Norberg; Rickard Magnusson; [2011]
    Nyckelord :GD; PHP; bildmanipulation;

    Sammanfattning : Fler och fler webbapplikationer låter sina användare ladda upp bilder. Ibland behöver dessa bilder manipuleras på något sätt, till exempel förminskas eller beskäras för att bättre passa in på webbsidan. LÄS MER