Object-oriented remote sensing image coastline extraction method

A remote sensing image, object-oriented technology used in instruments, character and pattern recognition, computer parts, etc.
CN102013015AInactive Publication Date: 2011-04-13NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV
Publication Date
2011-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an object-oriented remote sensing image coastline extraction method which belongs to the field of full automatic remote sensing image coastline extraction. The steps are as follows: carrying out filtering treatment on a remote sensing image; selecting the segmentation algorithm to segment the remote sensing image; utilizing sample points for classifying the remote sensing image after segmentation; utilizing the seed growth method for extracting a seawater region; and finally utilizing the corresponding judgment criterion to extract a coastline. By utilizing the method disclosed by the invention, the accuracy of the existing coastline extraction algorithm can be improved, the correct rate of seawater extraction after segmentation and classification treatment throughthe object-oriented method is improved and the accuracy of the coastline extraction is ensured. As the coastline changes frequently, the method can provide convenience for maintenance and updating ofcoastline information of all levels of national fundamental geographic information databases.
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Description

technical field

[0001] The invention relates to a remote sensing image coastline extraction method, more specifically an object-oriented remote sensing image coastline extraction method. Background technique

[0002] As a zone where sea and land interact frequently, the coastal zone has a superior geographical location, rich resources of all kinds, intense human activities, and strong changes in coastline erosion and deposition. Rapid and accurate determination of the location and nature of the coastline is a technical activity that must be carried out for people to study sea-land interaction, coastal reclamation, port development, and urban expansion. Important content with work such as surveys. At present, the coastline mainly relies on manual field GPS measurement or manual digital remote sensing image acquisition. The survey cycle is long, the efficiency is low, and the cost is high. It is difficult to meet the data update requirements of the basic geographic informatio...

Claims

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