Rock-core hyperspectral-data geometric distortion correction method based on triangle scaling method
A technology of geometric distortion and correction method, applied in image data processing, instrumentation, calculation, etc., can solve the problems of core data selection control points, difficult geometric correction, no fixed control points, etc., to reduce human intervention and improve reliability , the effect of saving manpower
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[0037] In order to better explain the geometric distortion correction method of core hyperspectral data based on the triangle calibration method in the present invention, the geometric distortion correction is performed by using simulated core data. The present invention is a method for correcting geometric distortion of core hyperspectral data based on a triangle calibration method. The specific implementation steps are as follows:
[0038] (1) Read in core data: read in simulated core data; figure 1 (a) shown;
[0039] (2) Determine the band for extracting the calibration triangle based on the spectral characteristics: According to the data characteristics, determine the first band as the experimental band;
[0040] (3) The image is filtered by the smooth linear spatial filter, and the scaled triangle is roughly extracted by the threshold segmentation method: the threshold segmentation method is as follows:
[0041]
[0042] f(x, y) is the smoothed core image, g(x, y) is the image ...
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