公开(公告)号：US10051882B2

公开(公告)日：2018-08-21

申请号：US14607253

申请日：2015-01-28

申请人： JAPAN TOBACCO INC.

发明人： Seiji Nakagawa ,  Kazuhiro Tokuda ,  Kaoru Narazaki ,  Tsutomu Kamishiraki ,  Yasushige Tsuchiya

IPC分类号： A24B3/14 ,  D21G9/00 ,  G01G17/02 ,  G01N21/89 ,  G01G23/35 ,  G06T7/00 ,  G01G9/00

CPC分类号： A24B3/14 ,  D21G9/0009 ,  G01G9/005 ,  G01G17/02 ,  G01G23/35 ,  G01N21/8901 ,  G06T7/0006 ,  G06T2207/10024 ,  G06T2207/30128

摘要： A measuring apparatus for performing a basis weight measuring method for sheet tobacco according to the present invention includes: a light source (28) that emits light to sheet tobacco (ST) passing through a measurement position (P) on a transport path (18); and a visual sensor (30), the visual sensor (30) having a color camera (32) disposed with the transport path (18) put between the color camera (32) and the light source (28), a processing part (40) that transforms a color image of the sheet tobacco (ST) taken by the camera (32) into a grayscale image, and a conversion part (42) that converts an average gray level of the grayscale image into a basis weight of the sheet tobacco (ST) with reference to a conversion map which indicates a relationship between the average gray level of the grayscale image and an actual basis weight of sheet tobacco (ST).