Study on Quality Estimation of fruit surface for Strawberry and Tomato in Wave of Near Infrared (NIR)

近红外（NIR）波下草莓和番茄果实表面品质评价研究

• 批准号: 11660256
• 负责人: NAGATA Masateru
• 金额: $ 2.3万
• 依托单位: MIYAZAKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11660256/
• 关键词: strawberry; tomato; surface bruising; spectral analysis; NIR image processing; quality estimation; 波長; 品質判定; 画像処理; トマト等; 近赤外線; 可視光; 等級検査

This study addresses the problem of detecting bruises on fruit surface of strawberry and tomato. Bruises were caused in a controlled manner on the freshly harvested fruits. The characteristics of reflected light from the bruised and non-bruised surfaces were measured and analyzed using a spectrometer known as photonic multiple analyzer. Based on spectral information of bruised surfaces, the particular wavelengths critical for bruise detection were determined. A spectral filter of the effective wave band at which the constant discrimination between bruised and non-bruised surfaces occurred was identified. The filter was mounted to a CCD camera to acquire images of the strawberry surface. The experimental result indicates that the bruises on strawberries (Akihime produced Miyazaki) become visible when viewed under Near Infrared light source (NIR). The spectral filter above 960 nm was able to discriminate and show bruised and non-bruised surfaces of strawberries. The images of bruised strawberries taken at this wavelength are subtracted from the images taken above 860 nm in order to determine the bruised parts of the strawberries.

本研究解决了草莓和番茄果实表面擦伤的检测问题。在有控制的情况下，在新鲜收获的水果上造成了瘀伤。利用一种称为光子多重分析仪的光谱仪测量和分析了擦伤和非擦伤表面的反射光的特性。基于擦伤表面的光谱信息，确定了擦伤检测的关键波长。确定了一种有效波段的光谱滤波器，在该波段上，损伤表面和非损伤表面发生恒定的区分。滤光片安装在CCD相机上获取草莓表面的图像。实验结果表明，在近红外光源（NIR）下，草莓（宫崎秋姬）上的瘀伤是可见的。960 nm以上的光谱滤光片能够区分和显示草莓的损伤和非损伤表面。在860nm以上波长的图像中减去在该波长拍摄的草莓擦伤图像，以确定草莓的擦伤部分。

项目成果

M.Nagata,B.P.Shrestha,C.Qixin and S.Idera: "Visible and NIR Spectral Information for Bruise Detection On Strawberry"第63回九州農業研究発表会専門部会発表要旨集. 59 (2000)

M.Nagata、B.P.Shrestha、C.Qixin 和 S.Idera：“草莓碰伤检测的可见光和近红外光谱信息”第 63 届九州农业研究会议特别委员会摘要 59 (2000)。

M.Nagata,Y.Gejima,Bim P.Shrestha,Q.Cao,and S.Nemoto: "Study on the Characteristic of Strawberry at Different Maturity Level by using Photon Multiple Analyzer"第59回農業機械学会年次大会講演要旨. 455-456 (2000)

M.Nagata、Y.Gejima、Bim P.Shrestha、Q.Cao、S.Nemoto：“利用光子多重分析仪研究不同成熟度草莓的特性”第 59 届日本农业学会年会摘要机械工程师.455-456 (2000)

Masateru Nagata,Yoshinori Gejima,Bim Prasad Shrestha,Cao Qixin and Shigeru Nemoto: "Study on the Characteristics of Strawberry at Different Maturity Level by using Photon Multiple Analyzer"農業機械学会第59回年次大会. (印刷中). (2000)

Masateru Nagata、Yoshinori Gejima、Bim Prasad Shrestha、Cao Qixin 和 Shigeru Nemoto：“利用光子多重分析仪研究草莓的特性”第 59 届农业机械学会年会（2000 年）。

Bim Prasad SHRESTHA,Masateru NAGATA,Qixin CAO: "Study on Image Processing for Quality Estimation of Strawberries (part 1) -Detection of Bruises on Fruit by Image Processing-"Journal of Society of High Technology in Agriculture. 13(2). 99-106 (2001)

Bim Prasad SHRESTHA、Masateru NAGATA、Qixin CAO：“草莓质量评估的图像处理研究（第 1 部分）-通过图像处理检测水果上的碰伤-”农业高新技术学会学报。

M.Nagata, Y.Gejima, Bim P.Shrestha, Q.Cao, and S.Nemoto: "Study on the Characteristic of Strawberry at Different Maturity Level by using Photon Multiple Analyzer"Proceedings of The Annual Meeting (No.59) of Japanese Society of Agricultural Machinery. 455-

M.Nagata、Y.Gejima、Bim P.Shrestha、Q.Cao、S.Nemoto：“利用光子多重分析仪研究不同成熟度草莓的特性”年会论文集（第 59 期）