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A floating raft culture area extraction method based on land resource satellite image

A satellite image and area extraction technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problem of high precision without using floating felling breeding area, and achieve the effect of accurate extraction ability and good robustness

Active Publication Date: 2019-03-01
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology

[0004] Searching Chinese and foreign literature, there is no high-precision extraction method for floating logging farming areas based on land resource satellite images that combines visual attention models and edge line features in the prior art

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  • A floating raft culture area extraction method based on land resource satellite image
  • A floating raft culture area extraction method based on land resource satellite image
  • A floating raft culture area extraction method based on land resource satellite image

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Embodiment Construction

[0055] The specific technical solutions of the present invention will be further described below in conjunction with the accompanying drawings.

[0056] The multi-spectral resolution of the original land resources satellite remote sensing image processed by the method of the present invention is up to 30 meters, the panchromatic band resolution is up to 15 meters, the image size is 1025 rows×1025 columns, and contains nine bands, namely the aerosol band (0.43-0.45μm), blue band (0.45-0.51μm), green band (0.53-0.59μm), red band (0.64-0.67μm), near infrared band (0.85-0.88μm), short infrared band 1 (1.57 -1.65μm), short infrared band 2 (2.11-2.29μm), panchromatic band (0.50-0.68μm), cirrus band (1.36-1.38μm). The target to be extracted is the offshore floating raft culture area. as attached figure 2 shown.

[0057] Such as figure 1 As shown, the specific steps of the raft type mariculture extraction method based on high-resolution remote sensing images of the present invent...

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Abstract

The invention relates to a floating raft culture area extraction method based on land resource satellite image, which is characterized in that the method comprises the following steps: 1) on the basisof remote sensing image segmentation, extracting water body area in the remote sensing image by using NDWI index; 2) Based on the small-scale segmentation of water body region, the potential aquaculture region P1 is extracted by using the NDVI visual salient features; 3) calculate that marginal overlap degree of the plaques in the potential aquaculture area P1, further screen the plaques P1 to obtain a more accurate potential aquaculture area P2; 4) calculate that relative width of the plaques in the potential aquaculture area P2, further screen the P2 to obtain the final extraction result. On the basis of the NDVI visual salient feature, the method of the invention utilizes the salient feature of the edge of the aquaculture area, introduces the concept of edge overlap degree, and realizes the high-precision extraction of the raft aquaculture area in the land resource satellite image.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, in particular to a method for extracting floating raft culture areas based on land resources satellite images. Background technique [0002] Target extraction using remote sensing images is one of the most widely used remote sensing applications. Offshore aquaculture can bring huge economic benefits to coastal businesses, but at the same time, excessive aquaculture will have a serious impact on the marine ecological environment. Therefore, there is an urgent need for a fast and efficient extraction method to monitor offshore aquaculture areas, which is of great importance to It is of great significance to rationally develop marine resources and protect the marine ecological environment. The traditional method of extracting floating raft culture areas mainly provides decision-making advice based on personal experience and analysis of historical data. This method has certain limit...

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Application Information

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IPC IPC(8): G06K9/00G06T7/11G06T7/13G06T7/136G06T7/62
CPCG06T7/11G06T7/13G06T7/136G06T7/62G06T2207/10032G06V20/13
Inventor 王志华杨晓梅周成虎
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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