Sökning: "Saliency map"

Visar resultat 6 - 9 av 9 uppsatser innehållade orden Saliency map.

  1. 6. Content-aware Video Compression

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

    Författare :Vivek Subramanian; [2019]
    Nyckelord :region-of-interest; saliency map; bitrate; H.264; video com­pression; quantization offset;

    Sammanfattning : In a video there are certain regions in the image that viewers focus on more than others, which are called the salient regions or Regions­Of-Interest (ROI). This thesis aims to improve the perceived quality of videos by improving the quality of these ROis while degrading the quality of the other non-ROI regions of a frame to keep the same bitrate as would have been the case otherwise. LÄS MER

  3. 7. Perceptually ModulatedLevel of Detail in Real Time Graphics

    Kandidat-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :PATRIK JOHANSSON; [2013]
    Nyckelord :;

    Sammanfattning : As demands on real time 3D graphics increase we need new ways of improving rendering speeds. Significant speed gains can be achieved if we can remove polygons without affecting the visual fidelity of the image by removing the ones that will not be visible to the user anyhow. LÄS MER

  4. 8. Saliency Maps using Channel Representations

    Uppsats för yrkesexamina på avancerad nivå, Datorseende

    Författare :Alexander Tuttle; [2010]
    Nyckelord :computer vision; saliency maps; p-channels;

    Sammanfattning : In this thesis an algorithm for producing saliency maps as well as an algorithm for detecting salient regions based on the saliency map was developed. The saliency values are computed as center-surround differences and a local descriptor called the region p-channel is used to represent center and surround respectively. LÄS MER

  5. 9. Estimation of visual focus for control of a FOA-based image coder

    Uppsats för yrkesexamina på grundnivå, Institutionen för systemteknik

    Författare :Stefan Carlén; [2003]
    Nyckelord :Technology; image coding; focus of attention; saliency map; FOA expansion; TEKNIKVETENSKAP;

    Sammanfattning : A major feature of the human eye is the compressed sensitiveness of the retina. An image coder, which makes use of this, can heavily encode the parts of the image which is not close to the focus of our eyes. Existing image coding schemes require that the gaze direction of the viewer is measured. LÄS MER