ボケ図形におけるほけ量の数量化の考え方

Material type: 文書・図像類

Author: 長谷, 博行

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Publication date: 2012-06-04

Material Format: Digital

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Note (General)：: Human visual sense has two aspects in our feeling for blurred image, that is, one is the amount of blur depending on object size,t he other is the amo...

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Material Type: 文書・図像類
Title: ボケ図形におけるほけ量の数量化の考え方
Author/Editor: 長谷, 博行
Author Heading: 長谷, 博行
Publication Date: 2012-06-04
Publication Date (W3CDTF): 2012-06-04
Alternative Title: Quantification of Blurred Images and its Application to Pattern Recognition
Periodical title: 映像情報メディア学会技術報告
No. or year of volume/issue: 36 21
Volume: 36
Issue: 21
Pages: 21-24
Text Language Code: jpn
Subject Heading: ボケ図形
変動エントロピー
相対的ボケ評価
絶対的ボケ評価
blurred image
quantification of blur
character database
Target Audience: 一般
Note (General): Human visual sense has two aspects in our feeling for blurred image, that is, one is the amount of blur depending on object size,t he other is the amount of blur independenot f the object size. In the formerf or example,w hen the image size becomesl arger, 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:H L)", which is dependento n resolution,a nd the latterc an be quantifiedb y "variatione ntropy for a unit area(or A-type variatione ntropy:H A)", which is independento f resolution.T hese two metricsh ave complementaryp roperties.L ast, two variation entropies are applied to the standard kanji character database, and then the strong relation between variation entropy and accuracy of recognitionis discussed
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=23050&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=23050&item_no=1&attribute_id=22&file_no=1
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ