Unlock instant, AI-driven research and patent intelligence for your innovation.

High-resolution No.3 SAR image road detection method based on shear waves

A technology of road detection and shear wave, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems of poor road processing effect and reduced edge information reliability in SAR images, and achieve the elimination of a large number of false edges, Effects of suppressing noise and improving detection accuracy

Inactive Publication Date: 2019-07-12
SHAANXI NORMAL UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Different from the additive noise of visible light images, the noise of SAR images is multiplicative, and there are strong noise dark roads in SAR images
This makes the traditional visible light edge detection method not effective for SAR image road detection.
Applying Robert operator, Laplace operator, Canny operator and other visible light image edge detection methods to SAR images will produce many false edges mixed with real edges, which will reduce the credibility of edge information

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-resolution No.3 SAR image road detection method based on shear waves
  • High-resolution No.3 SAR image road detection method based on shear waves
  • High-resolution No.3 SAR image road detection method based on shear waves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In order to further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific implementation, structural features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0036] Shearlet is a system similar to wavelet. Compared with traditional wavelet, it is more suitable for dealing with geometric features in multi-dimensional data, and can effectively capture edge and other anisotropic feature information. Using shear waves to detect road edges in SAR images can better suppress noise, calculate approximate values ​​of tangent direction and local curvature, and improve detection accuracy.

[0037] In order to solve the technical problem that the traditional detection method in the prior art will produce many false edges mixed with the real edges, which reduces the credibility of the edge information, this embodiment provides a shea...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a high-resolution No.3 SAR image road detection method based on shear waves, and the method comprises the following steps: 1, carrying out the preprocessing of an SAR image, and carrying out the noise reduction of the SAR image in advance through employing a noise reduction algorithm; 2, image noise model conversion: carrying out logarithmic conversion on the SAR image after noise reduction; 3, road detection: detecting the image; 4, exponential transformation: carrying out exponential transformation on the image; 5, binaryzation: converting the image into a binary image; 6, carrying out morphological processing, refining image edges, removing pseudo edges in the image, and obtaining a final image. According to the method, the shear wave is used for performing roadedge detection on the SAR image, noise can be better suppressed, the approximate values of the tangential direction and the local curvature are calculated, and the detection precision is improved.

Description

technical field [0001] The invention belongs to the technical field of image road detection, and in particular relates to a shear wave-based high-resolution SAR image road detection method. Background technique [0002] The Gaofen-3 satellite is not restricted by weather conditions such as cloud and rain, and can monitor and monitor global ocean and land resources around the clock. Serving the ocean, disaster reduction, water conservancy, meteorology and many other fields, it provides important technical support for marine surveillance and monitoring, maintenance of marine rights and interests, and emergency disaster prevention and mitigation. [0003] Like ground targets such as airports, bridges, dams, and rivers, road targets in GF-3 SAR images not only have strategic significance in military affairs, but also have important significance for national economic development. Image road extraction has important auxiliary significance for map update, object recognition, image...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/13G06T5/00
CPCG06T7/13G06T2207/10044G06T5/70
Inventor 孙增国林德道
Owner SHAANXI NORMAL UNIV