Data detection method, apparatus, and program
First Claim
1. A data detection method comprising the steps of:
- receiving input of image data representing an image of printed matter having recorded thereon an image to which data has been attached, which has been obtained by imaging, by use of an imaging means, correcting the geometrical distortions of the image data to obtain a corrected image data, and detecting the embedded data from said corrected image data.
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Accused Products
Abstract
Embedded data is accurately detected from an image of a printed matter recording an image in which data has been embedded, which has been obtained by an imaging means, even if the imaging means is not of high-performance. An imaging portion of a camera equipped cellular phone images a printed matter, on which an image data in which the URL of the storage location of audio data has been embedded as a digital watermark is recorded, to obtain an image data. A distortion correcting portion corrects the image distortions caused by the imaging portion to obtain a corrected image data, and detects the URL from the corrected image data. The data representing the detected URL is sent to an image server, which retrieves, based on the URL, the audio data, and sends it to the camera equipped cellular phone. The camera equipped cellular phone reproduces the audio data.
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Citations
24 Claims
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1. A data detection method comprising the steps of:
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receiving input of image data representing an image of printed matter having recorded thereon an image to which data has been attached, which has been obtained by imaging, by use of an imaging means, correcting the geometrical distortions of the image data to obtain a corrected image data, and detecting the embedded data from said corrected image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A data detection apparatus, comprising:
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an image data inputting means for receiving input of image data representing an image of printed matter having recorded thereon an image to which data has been attached, which has been obtained by imaging, by use of an imaging means, a correcting means for correcting geometrical distortions of the image data to obtain corrected image data, and a data detecting means for detecting the embedded data from said corrected image data. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A program for causing a computer to execute a data detection method, comprising the procedures of:
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a receiving procedure for receiving input of image data representing an image of printed matter having recorded thereon an image to which data has been attached, which has been obtained by imaging, by use of an imaging means, a corrected image data obtaining procedure for correcting the geometrical distortions of the image data to obtain a corrected image data, and a detection procedure for detecting the embedded data from said corrected image data. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification