| Paper Abstract and Keywords |
| Presentation |
2007-01-19 15:45
Fast Refining Method of Contour's Class Using the Description of Hierarchical Convex/Concave Structure
Ryohei Kamiya, Taketoshi Mori (Tokyo Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
We present a method to refine candidates of contour's class which have a low computational cost by using convex/concave information of a contour. The method hierarchically approximate a contour and encode it by means of convex/concave so that a tree (Polygonal Tree) is learned, then refine contour's class rapidly by the tree. Let $n$ be total number of learned contours, $m$ be total number of points in a contour. The computational time required in refinement is less than $O(m\log m)$, thus don't influenced by $n$, and the memory consumption is less than $O(nm)$. We experiment on silhouette images from ETH-80 database. As a result, we can refine $8$ contour's class into an average of $3.3$ class to an accuracy of $85\%$, into an average of $4.1$ class to an accuracy of $94\%$. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Shape Classification / Polygonal Approximation / Tree / Object Recognition / Convex Concave / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 106, no. 470, PRMU2006-204, pp. 61-66, Jan. 2007. |
| Paper # |
PRMU2006-204 |
| Date of Issue |
2007-01-12 (PRMU) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
PRMU |
| Conference Date |
2007-01-18 - 2007-01-19 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
|
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
PRMU |
| Conference Code |
2007-01-PRMU |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Fast Refining Method of Contour's Class Using the Description of Hierarchical Convex/Concave Structure |
| Sub Title (in English) |
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| Keyword(1) |
Shape Classification |
| Keyword(2) |
Polygonal Approximation |
| Keyword(3) |
Tree |
| Keyword(4) |
Object Recognition |
| Keyword(5) |
Convex Concave |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Ryohei Kamiya |
| 1st Author's Affiliation |
Tokyo University (Tokyo Univ.) |
| 2nd Author's Name |
Taketoshi Mori |
| 2nd Author's Affiliation |
Tokyo University (Tokyo Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2007-01-19 15:45:00 |
| Presentation Time |
30 minutes |
| Registration for |
PRMU |
| Paper # |
PRMU2006-204 |
| Volume (vol) |
vol.106 |
| Number (no) |
no.470 |
| Page |
pp.61-66 |
| #Pages |
6 |
| Date of Issue |
2007-01-12 (PRMU) |