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213results about How to "Accurate contour" patented technology

Satellite image based coastline automatic extraction and classification method

ActiveCN105740794AFully automatic quick extractionRich image colorScene recognitionRelationship extractionSatellite image
The present invention relates to a satellite image based coastline automatic extraction and classification method. The method is characterized technically by comprising the following steps: step 1, using a multi-spectral image of a coastal zone after precise registration, and by combining a normalized difference water index (NDWI) and a level set model, obtaining a precise contour of a water boundary line; step 2, performing object-oriented segmentation on a land portion region, and extracting coastline coastal feature basic units by means of a spatial position topological relationship between the basic units; step 3, based on a decision tree, performing determination and classification on each coastline coastal feature basic unit; step 4, determining a coastline position according to a coastline interpretation rule; and step 5, on the basis of a result of the coastline position based on the multi-spectral image in the step 4 and property information, outputting a coastline vector based on a high-resolution panchromatic image. According to the method provided by the present invention, the coastline position can be rapidly, accurately and comprehensively surveyed and the change of the coastline position can be dynamically monitored.
Owner:THE CHINESE PEOPLES LIBERATION ARMY 92859 TROOPS

System and method for profiling different users having a common computer identifier

A system and method profiles different users having a common terminal identifier in communication system. The system comprises a user activity data analyzer for extracting profile data from user terminal activity data, a user identifier for determining whether the profile data corresponds to a profile data history associated with the user terminal, and a user profile generator for generating a profile data history from the profile data for another user to be associated with the terminal in response to the profile data not corresponding to the profile data history associated with the user terminal. The user activity data analyzer extracts site addresses, URLs, click event data, metadata and other user activity from a session log to compile information useful for assessing a user's interests. This extracted profile data may then be compared to a profile history previously generated and associated with the terminal identifier. A low level of correspondence between the extracted profile data and the profile history associated with the terminal identifier indicates that a different user is generating the user activity data. The user profile generator then builds a profile history from the extracted profile data and associates it with the terminal identifier. The profile histories are provided different user identifiers. Upon subsequent detection of the terminal identifier, the profile data extracted from the user activity is compared to both profile histories to determine which user is navigating the site. Once sufficient profile data has been extracted to determine which profile history corresponds to the extracted data, advertising content that corresponds to the identified user may be selected and included in the content requested by the current user.
Owner:TERADATA US
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