Patent ID: 7388600
Filing Date: 2008-06-17
Classification: B07C

Abstract:
1. A read head for acquiring digital images of postal objects in a postal sorting installation, said read head comprising a high-resolution camera providing a high resolution multiple level gray scale image and a low-resolution color camera having a resolution lower than the resolution of said gray scale camera and providing a low resolution RGB color image, said cameras being disposed in said read head so as to form simultaneously two separately acquired and superposable digital images of each postal item, said read head being provided with an observation window through which each of the two cameras takes a respective image of each postal object, said read head being characterized in that it further comprises a light splitter system for splitting the light flux from the window and directing it to each of the cameras so that both cameras simultaneously take images of the same object points from the same viewing angle, said read head further comprising converting means for converting said low resolution RGB color image into a low resolution HSL color image and processing means for combining said low resolution HSL color image with said high resolution multiple level gray scale image for forming a high resolution HSL color image.