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用不规则图金字塔计算图像的同源群生成器Computing Homology Group Generators of Images Using Irregular Graph Pyramids |
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| 课程网址: | http://videolectures.net/gbr07_peltier_chgg/ |
| 主讲教师: | Samuel Peltier |
| 开课单位: | 维也纳技术大学 |
| 开课时间: | 2007-07-12 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | We introduce a method for computing homology groups and their generators of a 2D image, using a hierarchical structure i.e. irregular graph pyramid. Starting from an image, a hierarchy of the image is built, by two operations that preserve homology of each region. Instead of computing homology generators in the base where the number of entities (cells) is large, we first reduce the number of cells by a graph pyramid. Then homology generators are computed efficiently on the top level of the pyramid, since the number of cells is small, and a top down process is then used to deduce homology generators in any level of the pyramid, including the base level i.e. the initial image. We show that the new method produces valid homology generators and present some experimental results. |
| 关 键 词: | 分层结构; 2D图像; 生成器 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-04-16：lxf |
| 阅读次数: | 90 |