A high-voltage transmission line detection method based on linear targets
A technology of high-voltage transmission lines and detection methods, which is applied in the directions of instruments, character and pattern recognition, computer parts, etc., to achieve the effect of fast detection speed, high detection accuracy, and meet the requirements of unmanned aerial vehicle inspection.
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[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0048] Flowchart such as figure 1 As shown, the present invention uses the Hessian matrix for the detection method of the high-voltage transmission line. The Hessian matrix (Hessian matrix or Hessian), also known as the Hessian matrix, is a square matrix composed of the second-order partial derivatives of a real-valued function whose independent variable is a vector.
[0049] The specific implementation steps are as follows:
[0050] (1) Calculate the gradient vector and Hessian matrix of each pixel in the image
[0051] If the image L(x,y) is regarded as a three-dimensional surface composed of two-dimensional coordinates of pixels and their corresponding gray values, the coordinates of the three-dimensional surface can be expressed as:
[0052] C={(x,y,L)|L=L(x,y)}
[0053] Where (x, y) is the pixel position coordinates, L(x, y) is the gr...
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