| Paper Abstract and Keywords |
| Presentation |
2012-06-11 16:00
Quantification of blurred image
Hiroyuki Hase (Fukui univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Human visual sense has two aspects in our feeling for blurred image, that is, one is the amount of blur depending on object size, the other is the amount of blur independent of the object size. In the former for example, when the image size becomes larger, we feel smaller amount blur. The quantitative evaluation based on entropy for blurred images is proposed in this paper. The author calls this metric “variation entropy”. This metric has two kinds of aspects that coincide with the human visual sense. The first is the absolute evaluation of blur, and the second is the relative evaluation of blur. The former can be quantified by “variation entropy for a unit boundary length (or L-type variation entropy: )”, which is dependent on resolution, and the latter can be quantified by “variation entropy for a unit area(or A-type variation entropy: )”, which is independent of resolution. These two metrics have complementary properties. Last, two variation entropies are applied to the standard kanji character database, and then the strong relation between variation entropy and accuracy of recognition is discussed. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
blurred image / variation entropy / relative evaluation / absolute evaluation / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 36, no. 21, ME2012-85, pp. 21-24, June 2012. |
| Paper # |
ME2012-85 |
| Date of Issue |
2012-06-04 (IST, ME) |
| ISSN |
Print edition: ISSN 1342-6893 |
| Download PDF |
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| Conference Information |
| Committee |
ME IST |
| Conference Date |
2012-06-11 - 2012-06-11 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kanazawa Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
ME |
| Conference Code |
2012-06-ME-IST |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Quantification of blurred image |
| Sub Title (in English) |
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| Keyword(1) |
blurred image |
| Keyword(2) |
variation entropy |
| Keyword(3) |
relative evaluation |
| Keyword(4) |
absolute evaluation |
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| 1st Author's Name |
Hiroyuki Hase |
| 1st Author's Affiliation |
University of Fukui (Fukui univ.) |
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| Speaker |
Author-1 |
| Date Time |
2012-06-11 16:00:00 |
| Presentation Time |
30 minutes |
| Registration for |
ME |
| Paper # |
IST2012-34, ME2012-85 |
| Volume (vol) |
vol.36 |
| Number (no) |
no.21 |
| Page |
pp.21-24 |
| #Pages |
4 |
| Date of Issue |
2012-06-04 (IST, ME) |
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