ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Defect and disease detection in potato tubers.

Muir, A. Y.; Ross, D. W.; Dewar, C. J.; Kennedy, D.;

Proceedings of SPIE Year: 1998 Vol: 3543 Pages: 199-207 Ref: 1 ref.

1998

บทคัดย่อ

This study aimed to develop spectrophotometric methods of disease detection in potatoes, previously investigated by the Scottish Agricultural College (SAC) through to commercialisation. Work has shown that diseases such as gangrene, soft rot and common scab [pathogens not given] present uniquely different wavelength patterns or spectra. This was also the case for bruising, which could be detected to a depth of 4 mm. The linking of spectroscopy and video camera technology to create 2 dimensional images in several wavebands (visible to near infrared) has formed the basis of a multispectral camera which will capture images of produce. Associated hardware and software allows discrimination between the different categories to be carried out in real time using sets of individual pixels from each image. Two modules will be integrated into the system, one for disease and surface defects and the other to detect sub-surface defects. This will allow the manufacturer to offer a variable degree of sophistica

tion on the commercial machine which could be tailored to the users requirements. High throughput and the ability to distinguish between type and severity of disease is a pre-requisite for the final system. The final operating speed will be between 2 and 10 potatoes per second (3 to 8 t/h). A range of defects on other vegetables and fruits were studied and results have been equally encouraging. It is therefore envisaged that the same technology could be applied to sorting of other produce.