US 10,890,477 B2
Method for ascertaining the capacity of glass containers
Laurent Cosneau, Soucieu-en-Jarrest (FR); and Olivier Colle, Oullins (FR)
Assigned to TIAMA, Vourles (FR)
Appl. No. 16/305,416
Filed by TIAMA, Vourles (FR)
PCT Filed Jun. 5, 2017, PCT No. PCT/FR2017/051414
§ 371(c)(1), (2) Date Nov. 29, 2018,
PCT Pub. No. WO2017/212156, PCT Pub. Date Dec. 14, 2017.
Claims priority of application No. 16 55290 (FR), filed on Jun. 9, 2016.
Prior Publication US 2020/0319010 A1, Oct. 8, 2020
Int. Cl. G01F 17/00 (2006.01); G06T 11/00 (2006.01); G06T 7/62 (2017.01); G06T 7/68 (2017.01)
CPC G01F 17/00 (2013.01) [G06T 7/62 (2017.01); G06T 7/68 (2017.01); G06T 11/008 (2013.01); G06T 2207/10081 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of determining the capacity of glass containers (1), the method comprising the following steps:
using an X-ray computed-tomography apparatus (10) to acquire a plurality of X-ray images (I) of the container at different projection angles;
transmitting the X-ray images to a computer (17); and
analyzing the X-ray images with the computer;
the method being characterized by:
acquiring the X-ray images (I) for an empty container in order to cause only the material of the container to appear in the X-ray images;
determining the support surface of the container; and
analyzing the X-ray images in order to:
construct a digital model (M) of the container from the X-ray images;
determine the inside surface (Sf) of the digital model of the container;
position a filling level plane (Pn) on the digital model of the container parallel to the support surface and at a nominal distance (Hn) from the top of the digital model of the container; and
measure by calculation the inside volume of the digital model of the container as defined by the inside surface (Sf) of the digital model and by the filling level plane, this measurement being the filling capacity (Cn) of the container.