| 摘要 |
The invention relates to an optical method for inspecting articles made from transparent or translucent materials using a vision system, the method consisting: - of illuminating the articles by means of a light source whereof the angular spectrum is adapted to the contrast chosen for refracting objects present in the articles, - of recovering, by means of an image sensor, the light having passed through the articles, in order to form images of said articles. According to the invention, the method consists; * during a phase of referencing the vision system: - of placing a reference standard (20) comprising at least one reference object (21) refracting light according to a known range of angles in the field of vision of the image sensor, - of taking at least one image of the reference standard (20) in such a way as to measure at least the contrast in the image produced by at least one reference object (21), * and during at least one phase of qualifying the vision system: - of once more placing the reference standard (20) in front of the light source and in the field of vision of the image sensor. |
