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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