Sökning: "Compressed video"

Visar resultat 1 - 5 av 23 uppsatser innehållade orden Compressed video.

  1. 1. Anomaly Detection in Images and Videos Using Photo-Response Non-Uniformity

    Master-uppsats, Linköpings universitet/Datorseende

    Författare :Kerstin Söderqvist; [2021]
    Nyckelord :;

    Sammanfattning : When photos and videos are increasingly used as evidence material, it is of importance to know if these materials can be used as evidence material or if the risk of them being forged is impending. This thesis investigates methods for detecting anomalous regions in images and videos using photo-response non-uniformity -- a fixed-pattern sensor noise that can be estimated from photos or videos. LÄS MER

  3. 2. Techniques for Selecting Spatially Variable Video Encoder Quantization for Remote Operation

    Master-uppsats, Linköpings universitet/Medie- och Informationsteknik; Linköpings universitet/Tekniska högskolan

    Författare :Daniel Olsson; [2020]
    Nyckelord :Teleoperations; ROI; RONI;

    Sammanfattning : In this thesis project, it is analyzed if compressing a video stream differently, depending on the importance of certain features would decrease the data that need to be sent, without decreasing the information perceived by the operator in teleoperations. This is done by using both a static and dynamic selection of features that gets more or less compressed depending on how important they are to the operator. LÄS MER

  4. 3. Impact of Video Compression on the Performance of Object Detection Algorithms in Automotive Applications

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Kristian Kajak; [2020]
    Nyckelord :;

    Sammanfattning : The aim of this study is to generally expose the impact of using video compression methods on the performance accuracy of a neural network-based pedestrian detection system. Moreover, the emphasis is on investigating the consequences of using both compressed training and testing images with such neural network applications. LÄS MER

  5. 4. Characterizing Video Compression Using Convolutional Neural Networks

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Datavetenskap

    Författare :Sebastian Emmot; [2020]
    Nyckelord :Neural Networks; Image Analysis; Video Analysis; Compression; Deep Learning;

    Sammanfattning : Can compression parameters used in video encoding be estimated, given only the visual information of the resulting compressed video? If so, these parameters could potentially improve existing parametric video quality estimation models. Today, parametric models use information like bitrate to estimate the quality of a given video. LÄS MER

  7. 5. The interrelations between audio compression and graphical texture detail in video games : How they affect players perception of quality

    Kandidat-uppsats, Luleå tekniska universitet/Medier, ljudteknik och teater

    Författare :Daniel Frojd-Wasberg; [2020]
    Nyckelord :Perception; Video Games; Quality; Interrelation; audio compression; graphical detail;

    Sammanfattning : For this study three questions are being studied. Question one: “How does the audio compressionaffect the perceived video quality?” Question two is somewhat reversed: “How does the texturedetail affect the perceived audio quality?” The final question follows: “How do the audiocompression and texture detail affect the perceived overall quality?” The experiment was done on 36different untrained listeners, whereof 2 didn’t give complete answers and were therefore notincluded in the results. LÄS MER