Method and system for determining vanishing point candidates for projective correction

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United States of America Patent

PATENT NO 8897600
SERIAL NO

14136585

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Abstract

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Method, system, device and computer program product for determining vanishing point candidates of a text portion in an image document distorted by perspective. The method includes the steps of image binarization, connected component analysis, estimating a number of text lines in a Cartesian coordinate system, transforming the text lines to data points in a homogenous coordinate system, assigning a confidence level to the data points, grouping a number of data points into a priority sample array, clustering the data points in the priority sample array into a number of sample groups and assigning a group confidence value to each sample group. A RANSAC algorithm is applied to determine among the data points a set of inliers, initiated with the sample group having the highest group confidence value. A vanishing point candidate is determined from the text lines corresponding to the set of inliers.

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Patent Owner(s)

Patent OwnerAddress
I R I SPARC SCIENTIFIQUE DE LOUVAIN-LA NEUVE RUE DU BOSQUET 10 MONT-SAINT-GUIBERT 1435

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dauw, Michel Diegem, BE 28 195
De, Muelenaere Pierre Court-Saint-Etienne, BE 19 110
Dupont, Olivier Sombreffe, BE 18 111
Ma, Jianglin Louvain-la-Neuve, BE 4 35

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