Method for detecting single postal covers and postal covers stuck together in a mail sorting machine
First Claim
1. A method of detecting single postal items and multiple overlapping postal items in a postal sorting installation, said method comprising a step of providing a height measurement of the postal items (6) and detecting a variation of the measured height indicative of multiple overlapping postal items, said method being characterized in that said step of providing a height measurement comprises:
- acquiring an image (5) of each postal item viewed from in front into an address automatic recognition process,applying to each image (5) an outline-extraction process (10) to extract an outline of each postal item; and
analyzing said outline to provide said height measurement of said postal items.
1 Assignment
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Accused Products
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.
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Citations
6 Claims
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1. A method of detecting single postal items and multiple overlapping postal items in a postal sorting installation, said method comprising a step of providing a height measurement of the postal items (6) and detecting a variation of the measured height indicative of multiple overlapping postal items, said method being characterized in that said step of providing a height measurement comprises:
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acquiring an image (5) of each postal item viewed from in front into an address automatic recognition process, applying to each image (5) an outline-extraction process (10) to extract an outline of each postal item; and analyzing said outline to provide said height measurement of said postal items. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification