Sökning: "scale-space"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet scale-space.

  1. 1. Discrete Scale-Space Theory and the Scale-Space Primal Sketch

    Författare :Tony Lindeberg; Jan-Olof Eklundh; Jan. J Koenderink; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Computer vision; low-level processing; scale-space; diffusion; Gaussian filtering; discrete smoothing; primal sketch; segmentation; descriptive elements; scale detection; image structure; focus-of-attention; tuning low-level processing; blob detection; edge detection; edge focusing; histogram analysis; junction classification; perceptual grouping; texture analysis; critical points; classification of blob events; bifurcations; drift velocity; density of local extrema; multi-scale representation; digital signal processing; Computer Science; Datalogi;

    Sammanfattning : This thesis, within the subfield of computer science known as computer vision, deals with the use of scale-space analysis in early low-level processing of visual information. The main contributions comprise the following five subjects:The formulation of a scale-space theory for discrete signals. LÄS MER

  3. 2. Spatio-Temporal Scale-Space Theory

    Författare :Daniel Fagerström; Jan-Olof Eklundh; Luc Florack; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Image analysis; Bildanalys;

    Sammanfattning : This thesis addresses two important topics in developing a systematic space-time geometric approach to real-time, low-level motion vision. The first one concerns measuring of image flow, while the second one focuses on how to find low level features. LÄS MER

  4. 3. Local spatio-temporal image features for motion interpretation

    Författare :Ivan Laptev; KTH; []
    Nyckelord :computer vision; motion; recognition; scale-space;

    Sammanfattning : Visual motion carries information about the dynamics of ascene. Automatic interpretation of this information isimportant when designing computer systems forvisualnavigation, surveillance, human-computer interaction, browsingof video databases and other growing applications. LÄS MER

  5. 4. Hierarchical Scale Analysis of Images Using Phase Description

    Författare :Leif Haglund; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Scale analysis and description has over the last years become one of the major research field!The thesis describes a new algorithm which detects in what scale an event appears and also in what scale it disappears. In this way the scale space is subdivided into a number of intervals. LÄS MER

  7. 5. Enhancement, Detection, and Visualization of 3D Volume Data

    Författare :Qingfen Lin; Tony Lindeberg; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Three-dimensional (3D) volume data become increasingly common with the emergence and wide availability of modern 3D image acquisition techniques. The demand for computerized analysis and visualization techniques is constantly growing to utilize the abundant information embedded in these data.This thesis consists of two parts. LÄS MER