Abstract: Apparatus for measuring the stiffness of mail articles on the principle of measuring deflection of a beam in bending comprises a rectilinear conveying portion for conveying the mail articles, a deflection roller disposed in a staggered offset manner between two wheels having deformable rims in such a manner as to form a substantially triangular peak on the rectilinear conveying portion, and an inlet ramp that is disposed upstream from the peak and that follows the upward slope of the peak.

Abstract: Apparatus for measuring the stiffness of mail articles on the principle of measuring deflection of a beam in bending comprises a rectilinear conveying portion for conveying the mail articles, a deflection roller disposed in a staggered offset manner between two wheels having deformable rims in such a manner as to form a substantially triangular peak on the rectilinear conveying portion, and an inlet ramp that is disposed upstream from the peak and that follows the upward slope of the peak.

Abstract: An unstacker device comprises a floor and a retaining paddle that are designed to move a stack of mailpieces from a feed magazine towards an unstacker head under the action of a monitoring and control unit as the mailpieces are being unstacked from the front of the stack. The device further comprises a vision system suitable for forming a profile digital image of said stack of mailpieces in the magazine, and said unit is arranged to evaluate a certain inclination of the mailpieces in the stack on the basis of said profile image and to cause the floor and the paddle to move so as to present the mailpiece at the front of the stack in a satisfactory position on edge so that it can be unstacked by the unstacker head.

Abstract: The invention relates to a method of measuring a 3D profile of an article moving on a conveyor in a certain conveying direction, which method includes a step consisting in using an optical sensor to scan, by triangulation, a laser line projected onto the article moving on the conveyor. The method further includes a step of using the optical sensor to scan, by contrast difference, the article moving on the conveyor, and a step of making combined use of the results of the scans by triangulation and of the scans by contrast difference in a data processor unit for the purpose of measuring the 3D profile of the article.

Abstract: An unstacker device comprises a floor and a retaining paddle that are designed to move a stack of mailpieces from a feed magazine towards an unstacker head under the action of a monitoring and control unit as the mailpieces are being unstacked from the front of the stack. The device further comprises a vision system suitable for forming a profile digital image of said stack of mailpieces in the magazine, and said unit is arranged to evaluate a certain inclination of the mailpieces in the stack on the basis of said profile image and to cause the floor and the paddle to move so as to present the mailpiece at the front of the stack in a satisfactory position on edge so that it can be unstacked by the unstacker head.

Abstract: The invention relates to a method of measuring a 3D profile of an article moving on a conveyor in a certain conveying direction, which method includes a step consisting in using an optical sensor to scan, by triangulation, a laser line projected onto the article moving on the conveyor. The method further includes a step of using the optical sensor to scan, by contrast difference, the article moving on the conveyor, and a step of making combined use of the results of the scans by triangulation and of the scans by contrast difference in a data processor unit for the purpose of measuring the 3D profile of the article.

Abstract: A postal sorting machine comprises a sorting conveyor suitable for transporting postal articles in series past sorting outlets and a postal article feed unit having a magazine for loosely storing postal articles to be sorted and a separator that has a robotized arm and a vision sensor and that is suitable for picking up the postal articles to be sorted one-by-one from the magazine and for injecting them onto the sorting conveyor while placing them in series at constant pitch. The magazine has a platform mounted on an elevator that is actuated to keep the pile of postal articles a certain setpoint distance away from the vision sensor.

Abstract: A sorting machine (1) for sorting flat articles (2) on edge, which machine includes an upstream conveyor (10), and a downstream conveyor (30) that conveys the flat articles (2) by nipping them, the upstream conveyor (10) and the downstream conveyor (30) being separated by detector means (100) including an intermediate conveyor (20) provided with intermediate belts (22) that convey said flat articles (2) by nipping them, and that are associated individually with suction means (24, 25) pressing any flat article (2) against one or the other of said intermediate belts (22), image capture means (26) for capturing images of the bottoms of said flat articles (2) passing between the intermediate belts (22), and analysis and processing means (4) for analyzing and processing said images to detect any bunching of said flat articles (2).

Abstract: A sorting machine (1) for sorting flat articles (2) on edge, which machine includes an upstream conveyor (10), and a downstream conveyor (30) that conveys the flat articles (2) by nipping them, the upstream conveyor (10) and the downstream conveyor (30) being separated by detector means (100) including an intermediate conveyor (20) provided with intermediate belts (22) that convey said flat articles (2) by nipping them, and that are associated individually with suction means (24, 25) pressing any flat article (2) against one or the other of said intermediate belts (22), image capture means (26) for capturing images of the bottoms of said flat articles (2) passing between the intermediate belts (22), and analysis and processing means (4) for analyzing and processing said images to detect any bunching of said flat articles (2).

Abstract: The unstacker device (1) for unstacking flat articles comprises: a magazine (3) in which the articles (2) to be unstacked are disposed on edge in a stack against a jogging edge (5) and facing an unstacking plate (4) arranged to separate a first article (2A) and to drive it in a certain unstacking direction (A) that is perpendicular to the jogging edge (5); a conveyor (7) for conveying the unstacked articles, the conveyor having an inlet (7A) downstream from the jogging edge (5); and retaining means (8) disposed between the jogging edge (5) and the inlet of the conveyor (7A) and actuated to exert a retaining force on an article (2A, 2B), which retaining force opposes movement of the article.

Abstract: The unstacker device (1) for unstacking flat articles comprises: a magazine (3) in which the articles (2) to be unstacked are disposed on edge in a stack against a jogging edge (5) and facing an unstacking plate (4) arranged to separate a first article (2A) and to drive it in a certain unstacking direction (A) that is perpendicular to the jogging edge (5); a conveyor (7) for conveying the unstacked articles, the conveyor having an inlet (7A) downstream from the jogging edge (5); and retaining means (8) disposed between the jogging edge (5) and the inlet of the conveyor (7A) and actuated to exert a retaining force on an article (2A, 2B), which retaining force opposes movement of the article.

Abstract: A method of detecting bunched-together overlapping postal items includes the steps of moving the postal items on edge above a camera, forming grayscale images including the bottom sides of the postal items, and analyzing the image for the purpose of detecting the presence of any overlapping postal items. The method further includes the steps of transforming each grayscale image into a binary image that causes a boundary defined by a “pale” zone to appear that represents the bottom side of at least one postal item and that extends between two “dark” zones, the boundary having a “right” first profile and a “left” second profile, and the method further includes the step of analyzing the right and left profiles for the purpose of detecting any profile discontinuity that is indicative of the presence of overlapping postal items.

Abstract: The method of detecting single postal items and multiple overlapping postal items in a postal sorting installation consists in analyzing images (5) representing postal items (6) viewed from in front, and in applying to each image an outline-extracting process (10) in order to recognize items (6) having an outline (10) of substantially constant height as being single items. In this method, the reliability with which single items is detected is improved, and the digital image used for analysis purposes can be the digital image which is also used for optical character recognition processing in the postal sorting installation.

Abstract: The method of processing images (IN) including address information by video coding consists in identifying, for each image rejected by a process for automatically evaluating addresses by OCR, a rejection category corresponding to the rejected image by means of a cascade of filters (F1–F4) applied to confidence ratings in the image attribute vector associated with the rejected image, and when the rejection category corresponding to the rejected image is identified at a filter, in causing said filtering to be followed firstly by operator encoding (VC1–VC4) specific to the rejection category so as to add to or modify the image attribute vector associated with the rejected image, and secondly by evaluating (E) the image attribute vector associated with the rejected image so as to be able to decide when to stop video coding for the rejected image.

Abstract: A method of detecting bunched-together overlapping postal items includes the steps of moving the postal items on edge above a camera, forming grayscale images including the bottom sides of the postal items, and analyzing the image for the purpose of detecting the presence of any overlapping postal items. The method further includes the steps of transforming each grayscale image into a binary image that causes a boundary defined by a “pale” zone to appear that represents the bottom side of at least one postal item and that extends between two “dark” zones, the boundary having a “right” first profile and a “left” second profile, and the method further includes the step of analyzing the right and left profiles for the purpose of detecting any profile discontinuity that is indicative of the presence of overlapping postal items.

Abstract: The method for transforming a digital image (A) having several gray levels into a binary image (F) in which each pixel is coded over one bit, consists in applying, to each current pixel (P) of the digital image having several gray levels, several different parallel binarization processes (T1, T2, T3) each delivering as output a binary value for this current pixel and in combining (T4) the binary values delivered by the various binarization processes for each current pixel of the digital image having several gray levels so as to obtain a resultant binary value constituting the corresponding pixel of the binary image.

Abstract: The method of processing images (IN) including address information by video coding consists in identifying, for each image rejected by a process for automatically evaluating addresses by OCR, a rejection category corresponding to the rejected image by means of a cascade of filters (F1-F4) applied to confidence ratings in the image attribute vector associated with the rejected image, and when the rejection category corresponding to the rejected image is identified at a filter, in causing said filtering to be followed firstly by operator encoding (VC1-VC4) specific to the rejection category so as to add to or modify the image attribute vector associated with the rejected image, and secondly by evaluating (E) the image attribute vector associated with the rejected image so as to be able to decide when to stop video coding for the rejected image.