公开(公告)号：US20160334340A1

公开(公告)日：2016-11-17

申请号：US15111493

申请日：2015-01-21

Applicant: TIAMA

Inventor： Michel OLLIVIER ,  Olivier COLLE ,  Marc LECONTE ,  Florence DROUET

IPC: G01N21/90

CPC classification number: G01N21/90

Abstract: The invention relates to a method of inspecting containers (3) moving between a linear camera and a light source (7) presenting continuous variation of light intensity with a periodic pattern (71) along at least one variation direction (D). According to the invention: for each movement increment of the container, a sequence of N successive image lines of the container is acquired cyclically so that for each image line: the container (3) is illuminated by the light source (7); the image line of the container is acquired; and the periodic pattern (71) is shifted for the next line along the variation direction (D); for each increment of the container (3), at least one phase image line is calculated; and the phase image lines (LP(k)) are analyzed.