Free-viewpoint Synthesis over Panoramic Images
| Autor: | Tze-How Liew, 劉志豪 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 This thesis presents a method for a free viewpoint synthesis with a sparse view of panoramic images. Traditionally, the task of constructing a playback data set to navigate through a scene has required a particularly inefficient procedure. The conventional method of taking pictures and videos with a pinhole camera model is costly due to the slow run time and memory space required. We propose a method which takes advantage of a less costly setup and improves the visual quality of the final images. This method allows users to choose the desired viewpoint, as well as whether the output should be computed as a panoramic or perspective image. This entire procedure consists of four steps: structure from motion (SfM), image rectification and depth estimation, 3D reconstruction, and view synthesis. First, the extinsic parameters of the cameras are extracted by implementing the structure from motion algorithm/technique. Next, image pairs are rectified and their disparities can be computed, which can then be converted into depth maps for 3D reconstruction. Finally, the obtained 3D triangle meshes are transformed to the coordinates of target virtual camera, and the target image can be generated by intersecting rays with meshes. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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