Method for detecting a code with the aid of a mobile station

Christer Baeckstroem; Caj Soedergaard

Method for detecting a code with the aid of a mobile station

Christer Baeckstroem (Inventor), Caj Soedergaard (Inventor)

Research output: Patent › Patent application

Abstract

The invention relates to a method for detecting a code (40), and a mobile station adapted to the method. In the method, the mobile station (50) is used to capture an image of the subject (40) and the image is analysed and decoded into a numerical form in the mobile station (50). According to the invention, before the decoding of the bar code in the mobile station the edges of the subject (40) are determined from a high-resolution image, in the case of a 2D code, the location of the corner point of the subject (49) are estimated on the basis of adaptive thresholding, and, in the case of a 2D code, a perspective transformation is formed.

Original language	English
Patent number	WO05124657 A1
IPC	H04M 1/ 2755 A N
Priority date	18/06/04
Filing date	17/06/05
Publication status	Published - 29 Dec 2005
MoE publication type	Not Eligible

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title = "Method for detecting a code with the aid of a mobile station",

abstract = "The invention relates to a method for detecting a code (40), and a mobile station adapted to the method. In the method, the mobile station (50) is used to capture an image of the subject (40) and the image is analysed and decoded into a numerical form in the mobile station (50). According to the invention, before the decoding of the bar code in the mobile station the edges of the subject (40) are determined from a high-resolution image, in the case of a 2D code, the location of the corner point of the subject (49) are estimated on the basis of adaptive thresholding, and, in the case of a 2D code, a perspective transformation is formed.",

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T1 - Method for detecting a code with the aid of a mobile station

AU - Baeckstroem, Christer

AU - Soedergaard, Caj

PY - 2005/12/29

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N2 - The invention relates to a method for detecting a code (40), and a mobile station adapted to the method. In the method, the mobile station (50) is used to capture an image of the subject (40) and the image is analysed and decoded into a numerical form in the mobile station (50). According to the invention, before the decoding of the bar code in the mobile station the edges of the subject (40) are determined from a high-resolution image, in the case of a 2D code, the location of the corner point of the subject (49) are estimated on the basis of adaptive thresholding, and, in the case of a 2D code, a perspective transformation is formed.

AB - The invention relates to a method for detecting a code (40), and a mobile station adapted to the method. In the method, the mobile station (50) is used to capture an image of the subject (40) and the image is analysed and decoded into a numerical form in the mobile station (50). According to the invention, before the decoding of the bar code in the mobile station the edges of the subject (40) are determined from a high-resolution image, in the case of a 2D code, the location of the corner point of the subject (49) are estimated on the basis of adaptive thresholding, and, in the case of a 2D code, a perspective transformation is formed.

M3 - Patent

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Y2 - 2005/06/17

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