Equipment and method for evaluating quality of granular substance

Application Number: 00107017
Application Date: 2000.04.24
Publication Number: 1271857
Publication Date: 2000.11.01
Priority Information: 1999/4/22 JP 115405/99; 1999/7/16 JP 203921/99; 1999/7/30 JP 218091/99
International: G01N21/85;G01N33/02
Applicant(s) Name: Satake Engineering (Mfg.) Co., Ltd.
Inventor(s) Name: Satake Akira;Ikida Takahiro;Tsuchii Satoru
Patent Agency Code: 72001
Patent Agent: chen ji
Abstract A quality evaluation method for granular objects includes the steps of: selectively irradiating the objects from a front side and a back side thereof; taking a reflection light image and a transmission light image from both the front and back sides of the irradiated objects; obtaining optical information of the objects by image-processing the reflection and transmission light images; obtaining shape information of the objects based on the optical information; determining the quality of each of the objects based on the optical information and the shape information, including the quality of the complete objects and the incomplete objects; and counting the numbers of the objects per quality and obtaining ratios of the objects per quality against the total number of the objects. Samples images of the objects are prepared based on the optical information.