Neutral point identifying method based on polarization degree ellipse fitting
A technology of ellipse fitting and identification method, applied in the field of atmospheric optics research, which can solve the problems of unproposed neutral point detection and identification, etc.
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[0049] In this example, if figure 1 As shown, a neutral point identification method based on degree of polarization ellipse fitting is carried out as follows:
[0050] Step 1: Obtain n sky polarization images I 1 , I 2 ,...,I n ;
[0051] The atmospheric polarization mode acquisition device is composed of a CCD camera, a fisheye lens and an analyzer placed in front of the fisheye lens; the CCD camera is used to acquire the polarized light intensity of the sky polarization image, and the fisheye lens replaces the lens of the CCD camera itself for The field of view of the CCD camera is extended, and the analyzer is used to detect atmospheric polarized light in sky polarized images.
[0052] Use the atmospheric polarization mode to acquire the device at n different polarization angles θ 1 ,θ 2 ,…,θ n Obtain n pieces of sky polarization images I respectively 1 , I 2 ,...,I n , n≥3; sky polarization images are represented in matrix form during calculation; in this impleme...
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