Evaluation method of relation between fruit surface and its internal quality by three dimensional measurement with one camera

一相机三维测量评价水果表面与内在品质关系的方法

• 批准号: 12660229
• 负责人: TOJO Seishu
• 金额: $ 0.45万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12660229/
• 关键词: fruit surface; surface image; surface mapping; internal quality; sugar concentration; optical image

In the first year, the surface mapping machine and its software were designed to get the optical surface image and make a synthesized image from the optical surface images. In the second year, the experimental study on the relation between fruit surface and the internal quality was carried out using the developed surface mapping apparatus.Apple was used as a test fruit because the producers and the consumers select an apple watching its surface image. 5 pieces of 3 variety, "Mutsu", "Sun-Fuji" and "Kogyoku" were tested. The surface image was taken by the surface mapping apparatus and the sugar concentration at a point of 5mm under the surface was measured with Brix sugar concentration apparatus for 40 samples each apple. The analysis of the surface mapping image was carried out by the brightness of RGB. The distribution of RGB brightness was calculated in the area divided in a certain section. The image was characterized with the mean and the variance of distribution against the size of division. The evaluation of color distribution was analyzed after HIS transform. The data of Mutsu showed a significant relation between the color distribution and the sugar distribution. Sun-Fuji and Kogyoku have not a strong relation between the color and sugar distribution.

第一年，设计了表面测绘机及其软件来获取光学表面图像并从光学表面图像生成合成图像。第二年，利用研制的表面测绘仪，进行了水果表面与内在品质关系的实验研究。以苹果为试验水果，是因为生产者和消费者通过观察其表面图像来选择苹果。测试了“Mutsu”、“Sun-Fuji”和“Kogyoku”3个品种的5个。通过表面测绘仪拍摄表面图像，并使用 Brix 糖浓度仪对每个苹果 40 个样品测量表面下 5mm 处的糖浓度。通过RGB亮度对表面映射图像进行分析。计算某一部分划分的区域内RGB亮度的分布。图像的特征是分布的均值和方差与分区大小的关系。 HIS变换后对颜色分布的评价进行了分析。 Mutsu的数据显示颜色分布和糖分分布之间存在显着关系。 Sun-Fuji和Kogyoku的颜色和糖分分布之间没有很强的关系。

项目成果

S.Tojo, K.Watanabe: "Water Movement in Growth Medium Containing Biological Waste."Proceedings The XIV Memorial CIGR World Congress 2000. 682-686 (2000)

S.Tojo, K.Watanabe：“含有生物废物的生长培养基中的水运动”。2000 年第十四届 CIGR 世界大会记录。682-686 (2000)

S.Tojo, K.Watanabe: "Water Movement in Growth Medium Containing Biological Waste. 682-686"Proceeding The XIV Memorial CIGR World Congress 2000. 682-686 (2000)

S.Tojo, K.Watanabe：“含有生物废物的生长培养基中的水运动。682-686”在 2000 年第 XIV 纪念 CIGR 世界大会上进行。682-686 (2000)