Method, apparatus and programs for generating and utilizing content signatures
AssigneeDigimarc Corporation
InventorsHugh L. Brunk, Kenneth L. Levy
Life of this patent
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Abstract
The present invention relates to deriving and utilizing content signatures. A content signature is a representation of a content item, which is derived from the content item itself. According to the invention, a method of generating a content signature for a signal is provided. The method includes the steps of: i) dividing the signal into at least one set; ii) transforming the set into a frequency-based domain; iii) determining features of the transformed set; and iv) grouping the features so as to form a content signature of the set.
Claims28
A method of linking an image or video to metadata contained in a network resource, said method comprising:
- receiving data corresponding to an image or video;
- correcting or adjusting for a geometric orientation of the data;
- and then
- calculating a fingerprint or signature as an identifier from the corrected or adjusted for data;
- providing at least a sub-set of the fingerprint or signature to a network resource to identify metadata associated with the image or video, wherein the metadata is associated with—but separate from—the fingerprint or signature and the data;
- and
- receiving from the network resource at least some of the metadata associated with the image or video.
A method of linking an image to metadata contained in a network resource, said method comprising:
- receiving image or video data;
- correcting or adjusting for a geometric orientation of the image or video data;
- interrogating a network resource through use of a fingerprint or signature derived or determined from inherent attributes of image or video data to identify metadata associated with the image or video data, wherein the metadata is associated with—but separate from—the fingerprint or signature and the image or video data;
- and
- providing identified metadata.
A method of linking an image or video to metadata contained in a network resource comprising:
- receiving image or video data from a wireless device;
- correcting for distortion in the received image or video data;
- and then
- comparing a fingerprint or signature representing inherent characteristics of the corrected image or video data to a plurality of records, wherein each record includes at least image or video characteristics;
- upon a successful match with a record, identifying metadata associated with—but separate from—the fingerprint or signature and at least one of:i) the record or ii) image or video data;
- and
- providing identified metadata to the wireless device.
A method of linking an image or video to metadata contained in a network resource, said method comprising:
- receiving data corresponding to an image or video;
- correcting or adjusting for a geometric orientation of the data, wherein the image or video comprises an orientation component steganographically embedded therein, and wherein said correcting or adjusting for utilizes the orientation component;
- calculating a fingerprint or signature identifier from the data;
- providing at least a sub-set of the identifier to a network resource to identify metadata associated with the image or video;
- and
- receiving from the network resource at least some of the metadata associated with the image or video.
A method of linking media to metadata contained in a network resource, said method comprising:
- obtaining data corresponding to a media signal;
- correcting for or realigning a geometric or alignment characteristic of the data representing the media signal;
- and then
- deriving a fingerprint or signature from the corrected for or realigned data representing the media signal;
- interrogating a network resource with at least a sub-set of the fingerprint or signature to identify metadata associated with the media signal;
- and
- providing at least some of the identified metadata associated with the media signal.
A method of linking media to metadata contained in a network resource, said method comprising:
- obtaining media;
- realigning or adjusting for a geometric orientation or alignment characteristic of the media;
- and then
- providing a fingerprint or signature derived or determined from inherent attributes of the media to a network resource to identify metadata associated with the media;
- and
- providing or receiving identified metadata.
A method of linking media to metadata contained in a network resource, said method comprising:
- obtaining media;
- connecting for distortion in the media;
- and then
- providing a fingerprint or signature attributes calculated or derived from the corrected media to a network resource to identify metadata associated with the media;
- and
- providing or receiving identified metadata.
Dependencies are inferred from the claim text.