Method for analyzing a structured document likely to be deformed

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United States of America Patent

PATENT NO 10482324
APP PUB NO 20180285639A1
SERIAL NO

15940908

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Abstract

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The invention relates to a method for analyzing a structured document likely to be deformed from a first image and a second image of the document, comprising steps of:

    matching first points of interest extracted in the first image with second points of interest of a reference image showing a model of the document,estimation of a first geometric transformation taking account of deformations of the structured document shown in the first image relative to the model from the matches,determination of at least one first region to be analyzed in the first image, by projection of at least one reference region of the reference image by means of the first transformation,analysis of the content of the first determined region,matching third points of interest extracted in the second image with fourth points of interest extracted in the first image,estimation, from the matches made in the preceding step, of a second geometric transformation taking account of deformations of the document shown in the second image relative to the document shown in the first image,estimation of a third geometric transformation taking account of deformations of the document shown in one of the two images, called target image, relative to the first model shown in the reference image, the third transformation dependent on the second transformation,determination of at least one second region to be analyzed in the target image by projection of the reference region of the reference image by means of the third geometric transformation,analysis of the content of the second determined region.

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Patent Owner(s)

Patent OwnerAddress
IDEMIA IDENTITY & SECURITY FRANCE2 PLACE SAMUEL DE CHAMPLAIN COURBEVOIE 92400

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dura, Jeremy Nicolas Laurent Issy les Moulineaux, FR 2 8
Rostaing, Laurent Patrice Issy les Moulineaux, FR 1 5
Rouh, Alain Issy les Moulineaux, FR 14 107

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