Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density
碩士 === 國立清華大學 === 資訊工程學系 === 99 === Crumpled sheets of paper tend to exhibit specific and complex structure, which is usually described as ridge network by physicists. Existing literature has showed that it is difficult to automate ridge network detection in crumpled paper because of its complex str...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | en_US |
Published: |
2011
|
Online Access: | http://ndltd.ncl.edu.tw/handle/58330610205200187764 |
id |
ndltd-TW-099NTHU5392077 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-099NTHU53920772015-10-13T20:23:01Z http://ndltd.ncl.edu.tw/handle/58330610205200187764 Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density 基於圖形密度之自動化揉皺紙張中摺痕網路偵測 Huang, Marvin 黃茂聞 碩士 國立清華大學 資訊工程學系 99 Crumpled sheets of paper tend to exhibit specific and complex structure, which is usually described as ridge network by physicists. Existing literature has showed that it is difficult to automate ridge network detection in crumpled paper because of its complex structure. In this thesis, we attempt to develop an automatic detection process in terms of our proposed density criterion. We model the ridge network as a weighted graph, where the nodes indicate the intersections of ridges and the edges are the straightened ridges detected in crumpled paper. We construct the weighted graph by first detecting the nodes and then determining the edge weight using the ridge responses. Next, we formulate a graph density criterion to evaluate the detected ridge network. Finally, we propose an edge linking method to construct the graph by maximizing the proposed density criterion. Our experimental results show that, with the density criterion, our proposed node detection together with the edge line linking method could effectively automate the ridge network detection. Hsu, Chiou-Ting 許秋婷 2011 學位論文 ; thesis 36 en_US |
collection |
NDLTD |
language |
en_US |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立清華大學 === 資訊工程學系 === 99 === Crumpled sheets of paper tend to exhibit specific and complex structure, which is usually described as ridge network by physicists. Existing literature has showed that it is difficult to automate ridge network detection in crumpled paper because of its complex structure. In this thesis, we attempt to develop an automatic detection process in terms of our proposed density criterion. We model the ridge network as a weighted graph, where the nodes indicate the intersections of ridges and the edges are the straightened ridges detected in crumpled paper. We construct the weighted graph by first detecting the nodes and then determining the edge weight using the ridge responses. Next, we formulate a graph density criterion to evaluate the detected ridge network. Finally, we propose an edge linking method to construct the graph by maximizing the proposed density criterion. Our experimental results show that, with the density criterion, our proposed node detection together with the edge line linking method could effectively automate the ridge network detection.
|
author2 |
Hsu, Chiou-Ting |
author_facet |
Hsu, Chiou-Ting Huang, Marvin 黃茂聞 |
author |
Huang, Marvin 黃茂聞 |
spellingShingle |
Huang, Marvin 黃茂聞 Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density |
author_sort |
Huang, Marvin |
title |
Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density |
title_short |
Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density |
title_full |
Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density |
title_fullStr |
Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density |
title_full_unstemmed |
Automatic Ridge Network Detection in Crumpled Paper Based on Graph Density |
title_sort |
automatic ridge network detection in crumpled paper based on graph density |
publishDate |
2011 |
url |
http://ndltd.ncl.edu.tw/handle/58330610205200187764 |
work_keys_str_mv |
AT huangmarvin automaticridgenetworkdetectionincrumpledpaperbasedongraphdensity AT huángmàowén automaticridgenetworkdetectionincrumpledpaperbasedongraphdensity AT huangmarvin jīyútúxíngmìdùzhīzìdònghuàróuzhòuzhǐzhāngzhōngzhéhénwǎnglùzhēncè AT huángmàowén jīyútúxíngmìdùzhīzìdònghuàróuzhòuzhǐzhāngzhōngzhéhénwǎnglùzhēncè |
_version_ |
1718047068135620608 |