SAR image channel extraction method combining gray-level threshold-value segmentation and contour shape identification
A grayscale threshold and extraction method technology, applied in the field of computer vision, can solve the problems of segmentation result interference, noise sensitivity, complexity, etc., and achieve the effect of strong anti-background noise, avoiding strong interference, and reducing complexity
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[0041] In order to be able to understand the features and technical content of the present invention in more detail, the following describes the implementation of the present invention with specific examples, but the implementation of the present invention is not limited thereto.
[0042] In this embodiment, a spaceborne or airborne SAR is used to transmit electromagnetic waves to the target river area and receive the echo signal fed back from the target river area. The spaceborne or airborne SAR image of the target river area is generated according to the echo signal. Is the original SAR image, such as figure 2 As shown, the present invention accurately extracts the river channel from the SAR image by processing it.
[0043] In a preferred embodiment of the present invention, combining figure 1 As shown, the combined threshold segmentation and contour recognition method for SAR image river extraction includes the following steps:
[0044] Step 1. Use gray threshold segmentation to ...
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