公开(公告)号：US20190242833A1

公开(公告)日：2019-08-08

申请号：US16264162

申请日：2019-01-31

Applicant: MICROTEC S.R.L.

Inventor： ENRICO URSELLA ,  GIANCARLO ZANE ,  MARCO BOSCHETTI ,  SIMONE FACCINI

IPC: G01N23/083 ,  G01N23/18 ,  G01N23/04 ,  G06T7/00 ,  G06T7/11

CPC classification number: G01N23/083 ,  B07C5/3416 ,  B07C2501/009 ,  G01N23/04 ,  G01N23/18 ,  G01N33/025 ,  G01N2223/401 ,  G01N2223/618 ,  G06T7/001 ,  G06T7/10 ,  G06T7/11 ,  G06T2207/30128

Abstract: This disclosure relates to a method for non-destructive inspection of a fruit (1) having an axis of rotational symmetry (10). The method comprises the step of positioning the fruit (1) in such a way that its axis of rotational symmetry (10) has an orientation that is substantially parallel to a predetermined plane (20) and the step of radiographing the fruit (1), where the direction of emission of X-rays is substantially perpendicular to said predetermined plane (20) and an X-ray image obtained (41) lies on said predetermined plane (20). The X-ray image obtained (41) is processed to calculate, at corresponding points of the X-ray image (41), respective values of attenuation of the X-ray signal through the fruit (1). The X-ray image (41) is divided into a plurality of sections (415) which are perpendicular to the projection (410) of the axis of rotational symmetry (10) on the predetermined plane (20). Each section (415) is the projection of a corresponding slice of the fruit (1) that is substantially perpendicular to the axis of rotational symmetry (10). For each section (415), the deviation between a signal attenuation trend obtained from processing the X-ray image and a reference trend, or the deviation between a trend of a local coefficient of average attenuation obtained from processing the X-ray image and a trend with constant value, is examined in order to identify any anomalies, discontinuities or variations which are indicative of respective non-uniformities in the corresponding slice of fruit. This disclosure also relates to an apparatus (9) for carrying out a non-destructive inspection of a fruit (1) having an axis of rotational symmetry (10), said apparatus being configured for implementing the method according to the disclosure.