Image ship detection method based on constant false alarm rate
A technology for constant false alarm rate and ship detection, which is applied in measurement devices, radio wave measurement systems, and radio wave reflection/re-radiation. It can solve difficult marine environment and safety monitoring and analysis, and cannot extract ENVISATASAR image ship targets And other issues
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[0033] Step 1: ENVISAT ASAR image acquisition and data format conversion. The ENVISAT ASAR WSM (WideSwath Mode) wide imaging mode image named ASA_WSM_1PNCUH20060601_022221_000000422048_00132_22230_0151.N1 was acquired by the Satellite Remote Sensing Ground Receiving Station of the Chinese University of Hong Kong on June 1, 2006. It was read by the ENVI_ENVISAT_GEOREF_ENVISAT method provided by ENVI IDL software * .N1 format image data, perform geometric correction on image data, and convert it to JPG image file format. Use the Subset image cropping function of ERDAS IMAGE software to crop the image of the study area with a size of 1654 rows and 1181 columns (attached figure 1 );
[0034] Step 2: Read ENVISAT ASAR image data. Use the GDAL.Open method of GDAL / OGR to open the Dataset of the image JPG format dataset in the study area, and use the Read method of Dataset to read the grayscale data of the image data row by row to the one-dimensional array W. The length of the array...
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