A Study of a Non-destructive Measurement Method for Judging the Growth Stage of Gentian for Flower Harvest and Quality Control

判断龙胆生长阶段的无损测量方法研究及花卉采收与质量控制

基本信息

批准号：
18580258
负责人：
SHONO Hiroshi
金额：
$ 1.98万
依托单位：
Iwate University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18580258/
关键词：
Image Measurement Remote Sensing Growth Analysis Precision Farming Gentian

项目摘要

The pollinated flower, which exists randomly in a cut flower of Gentiana Sp., is known as the main cause which decreases market value of the whole. Because it often arrives to market with color changed in copper from its original color, the risk that deteriorates figure of the whole is very high.Because of this reason, it is necessary to remove the pollinated flower promptly after harvest unitl shipment. However, under present circumstances, most farmer should detect it only with observation of appearance and remove it manually. Therefore, some pollinated flower should be left usually.On 'Ashiro no natsu, Gentiana sp.', which is the leading kind in Iwate prefecture, apparent difference between the young flower and the flower which has just pollinated in field is so subtle that removal of the pollinated flower is considerably insufficient. On the other hand, even on this kind, a few skillful farmers are possible to detect the pollinated flower with careful inspection of appearance. However, to spread their technology, it is necessary to elucidate their sensuous and subjective distinction method objectively.In this study, targeting 'Ashiro no natsu, Gentiana sp.', difference of spectral radiance on the outer surface of petal between the young flower and the pollinated flower was examined closely from visible wave length over infrared with a simplified measuring device. As a result, a significant difference was ascertained especially in the wave length of 720nm neighborhood. Thus, in the near future, it will be possible to develop early detection device of the pollinated flower by picture photographing inexpensively, because the CCD, which is commonplace image sensor used in most commercial video camera, has sensibility to this wave length.

授粉花随机存在于龙胆属切花中，被认为是降低整体市场价值的主要原因。由于其到达市场时的颜色常常与原来的颜色不同，因此整体形状变差的风险非常高。因此，有必要在收获后立即将授粉的花朵取出并装运。但目前情况下，大多数农民只能通过观察外观来发现并手动清除。因此，通常应该留下一些授粉的花朵。对于岩手县领先品种“Ashiro no natsu, Gentiana sp.”，幼花和刚刚在田间授粉的花朵之间的明显差异非常细微，因此需要去除授粉花的数量明显不足。另一方面，即使是这种花，一些熟练的农民也可以通过仔细检查外观来检测授粉花。然而，为了推广他们的技术，有必要客观地阐明他们的感性和主观区分方法。本研究以“Ashiro no natsu, Gentiana sp.”为对象，研究了幼花和龙胆花瓣外表面光谱辐射的差异。使用简化的测量装置，通过红外线的可见波长仔细检查授粉的花朵。结果，特别是在720nm附近的波长中确定了显着差异。因此，在不久的将来，将有可能通过廉价的图片拍摄来开发授粉花的早期检测装置，因为CCD（大多数商用摄像机中使用的常见图像传感器）对此波长具有敏感性。