Synthetic aperture radar (SAR) target detection false alarm elimination method based on priori scene knowledge
A target detection and scene technology, applied in image data processing, instruments, calculations, etc., can solve the problem of too many false alarms in SAR target detection, achieve the effect of reducing the detection false alarm rate, reducing the false alarm rate, and improving recognition performance
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[0045] The implementation steps and effects of the present invention will be further described below in conjunction with the accompanying drawings.
[0046] refer to figure 1 , the present invention is based on prior scene knowledge SAR target detection false alarm removal method, the implementation steps are as follows:
[0047] Step 1, input the original SAR image I, and perform two times of downsampling and mean filtering on it to obtain the preprocessed SAR image I′.
[0048]1a) Let the number of rows and the number of columns of the original SAR image I be M and N respectively, and sample each row and column of I every other pixel, and obtain a next-order image with the number of rows being M / 2 and the number of columns being N / 2 Sampled image I d ;
[0049] 1b) Image I after one downsampling d Perform mean filtering to obtain a downsampled mean filtered image:
[0050] I df =conv2(I d ,W / 9,'same'),
[0051] Among them, conv2( ) is a two-dimensional convolution op...
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