Table 1 Grade classification criteria for 6-year-old ginseng from the KGC Ginseng Institute
From: Development of an automatic sorting system for fresh ginsengs by image processing techniques
Grade 1 | Grade 2 | Grade 3 | Off-grade |
|---|---|---|---|
Head | |||
 Head balanced with body part | Head balanced with body part | Head balanced with body part | No limit |
 Body is partially fat or curve is not severe | Body is partially fat or curve is not severe | Body is partially fat or curve is not severe | No limit |
Body and leg | |||
 Body length is 6 cm or longer, more than two legs that are 5 cm or longer, but body radius must be 2/5 or less than the body length | Body length is 4 cm or longer, more than two legs that are 3 cm or longer, but body length is 8 cm or longer and is straight. The body radius must be half or less than the body length | Body length is 3 cm or longer, legs are balanced with the body, and body length of 5 cm or longer and is straight. Poor body shape with a weight of 50 g or higher is included | No limit |