人の視覚特性の画像評価への応用 : 観察系を含めた心理物理的評価の導入

• 浅井 義行

  近畿大学医学部付属病院中央放射線部

• 青井 利行

  大阪労災病院画像診断科

• 山口 道弘

  大阪府立羽曳野病院放射線科

• 坂下 太郎

  近畿大学医学部付属病院中央放射線部

• 村野 喜彦

  近畿大学医学部付属病院中央放射線部

書誌事項

タイトル別名

• APPLICATION OF HUMAN VISION CHARACTERISTICS FOR IMAGE QUALITY EVALUATIONS : INTRODUCTION OF PSYCHOPHYSICAL EVALUATION WITH VIEWING SYSTEM

抄録

During radiographic imaging, it is very important that the results of physical evaluation correspond with that of the subjective evaluation. However the gradient curve, MTF and Wiener spectrum as physical indices do not correspondence to results of subjective evaluation. Utlizing the minimum perceptble density difference (ΔDmin), the human psychological effect is introduced into conventional psysical data. Our psychophysical data, by using ΔDmin, represent human eyes response to brightness, color tones and physical information quantity of screen/film systems. So the values of psychophysical data are in good agreement with the human vision sense when we observe X-ray films illuminated by viewing box. Therefore, it is very important when observing, we should include characteristics of human vision and the viewing box into its physical quantity.

収録刊行物

• 日本放射線技術学会雑誌

  日本放射線技術学会雑誌 50 (4), 511-517, 1994

  公益社団法人 日本放射線技術学会

キーワード

• Psychophysical data
• Optimum density
• Minimum perceptible density difference

詳細情報

• CRID: 1390282681357840768
• NII論文ID: 110003466594
• DOI: 10.6009/jjrt.kj00003325704
• ISSN: 18814883
• ISSN: 03694305
• Web Site: https://www.jstage.jst.go.jp/article/jjrt/50/4/50_KJ00003325704/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/1994218718
• 本文言語コード: ja
• データソース種別:
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  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可