Japan Tobacco Inc.

Kaoru Narazaki

Kazuhiro Tokuda

Yasushige Tsuchiya

Seiji Nakagawa

Tsutomu Kamishiraki

A measuring apparatus for performing a basis weight measuring method for sheet tobacco according to the present invention includes: a light source () that emits light to sheet tobacco (ST) passing through a measurement position (P) on a transport path (); and a visual sensor (), the visual sensor () having a color camera () disposed with the transport path () put between the color camera () and the light source (), a processing part () that transforms a color image of the sheet tobacco (ST) taken by the camera () into a grayscale image, and a conversion part () 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).

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Tokyo, Japan

Kaoru Narazaki