Digital Watermarking for Geospatial Images
First Claim
1. A method for a geographic information system to process source image data associated with geospatial information to generate and manage digitally watermarked image data, the method comprising:
- capturing the source image data with an image capture platform;
generating geospatial metadata with the image capture platform based on the geospatial information associated with the source image data;
formatting the geospatial metadata into a variable payload with the image capture platform;
digitally watermarking the source image data with the variable payload to generate digitally watermarked image data with the image capture platform; and
transmitting the digitally watermarked image data and the geospatial metadata from the image capture platform to an image processing center, wherein the image processing center is arranged to;
extract the variable payload from digitally watermarked image data, process the metadata, and publish metadata and links to additional data in association with the digitally watermarked image data in a watermark registry database such that one or more client applications can access the database.
1 Assignment
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Accused Products
Abstract
A geographic information system digitally watermarks by modifying pixels from a source image with additional spatial and non-spatial information for a destination image. When an image is digitally watermarked, the pixels of the image are modified to include an embedded redundant pattern that is imperceptible to viewers of the image. The redundant pattern of changes from the “digital watermark” can be converted back into a payload containing meaningful data, and in some examples into unique identifiers. The payload is arranged to link the image to additional information such as copyright information, geospatial data, and related applications and services. Since the payload is embedded within the pixels of the image, no additional storage space is required, and the information is arranged to survive various image manipulations that might be employed by a user such as: translation of image formats, rotation, scaling, cropping, printing and scanning, and many other image processes.
55 Citations
21 Claims
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1. A method for a geographic information system to process source image data associated with geospatial information to generate and manage digitally watermarked image data, the method comprising:
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capturing the source image data with an image capture platform;
generating geospatial metadata with the image capture platform based on the geospatial information associated with the source image data;
formatting the geospatial metadata into a variable payload with the image capture platform;
digitally watermarking the source image data with the variable payload to generate digitally watermarked image data with the image capture platform; and
transmitting the digitally watermarked image data and the geospatial metadata from the image capture platform to an image processing center, wherein the image processing center is arranged to;
extract the variable payload from digitally watermarked image data, process the metadata, and publish metadata and links to additional data in association with the digitally watermarked image data in a watermark registry database such that one or more client applications can access the database. - View Dependent Claims (2, 3, 4, 5)
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6. A method for a geographic information system to process source image data associated with geospatial information to generate and manage digitally watermarked destination image data, the method comprising:
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receiving the source image data from an image capture platform with the image processing center;
receiving geospatial metadata from the image capture platform with the image processing center, wherein the geospatial metadata is based on the geospatial information associated with the source image data;
formatting the geospatial metadata into a variable payload with the image processing center;
digitally watermarking the source image data with the variable payload to generate digitally watermarked image data with the image processing center;
generating scripted metadata and links to additional data with the image processing center, based on the received geospatial metadata and the variable payload;
publishing the scripted metadata and links to additional data in association with the digitally watermarked image data in a watermark registry database such that one or more client applications can access the database; and
transmitting the digitally watermarked image data from the image processing center to a client system through a distribution system, wherein the client system is arranged to;
extract the variable payload from digitally watermarked image data, retrieve the scripted metadata and links to additional data in association with the digitally watermarked image data, and execute an operation selected by a user based on either the metadata or the links to additional data. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for a geographic information system to process source image data associated with geospatial information to generate watermarked image data, the method comprising:
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receiving the source image data from a distribution system with a client system;
extracting geospatial metadata from the source image data with the client system;
receiving user specified data from a user with the client system;
formatting the geospatial metadata and the user specified data into a payload with the client system;
digitally watermarking the source image data with the payload to generate digitally watermarked image data with the client system;
generating registry metadata from the digitally watermarked image data and the payload with the client system;
publishing the registry metadata in a watermark registry database with the client system; and
transmitting the digitally watermarked image data for client-side image storage and distribution. - View Dependent Claims (21)
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Specification