Filtering method and device, computer equipment and computer readable storage medium

Abstract

The invention discloses a filtering method and device, computer equipment and a computer readable storage medium. The filtering method comprises the steps of: carrying out filtering processing on original geophysical prospecting scatter data, and determining second geophysical prospecting scatter data; according to the relative error of data points at the corresponding positions in the geophysical prospecting scatter data, replacing the data points at the corresponding positions in the original geophysical prospecting scatter data with the data points in the second geophysical prospecting scatter data of which the relative error is not smaller than a preset relative error threshold value to obtain third geophysical prospecting scatter data; and filtering the third geophysical prospecting scatter data to determine fifth geophysical prospecting scatter data. According to the relative error between the original geophysical prospecting scatter data and the data point of each corresponding position in the second geophysical prospecting scatter data, the data point of the corresponding position in the original geophysical prospecting scatter data is replaced by the data point of the second geophysical prospecting scatter data of which the relative error is not less than the preset relative error threshold, and distortion points in the original geophysical prospecting scatter data are eliminated, so that the filtering effect is improved.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a filtering method and device, computer equipment, and a computer-readable storage medium. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] When the 3D geophysical scattered point data is used for geological interpretation or 3D mapping, the filtering method is generally used to filter the geophysical scattered point data to smooth the 3D geophysical scattered point data. If the 3D geophysical prospecting data is filtered directly, the data is prone to deviation, and the filtering effect is difficult to control. [0004] In the case where there are distortion points in the 3D geophysical scattered point data, although the filtered result becomes smooth, it will ine...

AI Technical Summary

Problems solved by technology

If the 3D geophysical prospecting data is filtered directly, the data is prone to deviation, and the filtering effect is difficult to control

[0004] In the case where there are distortion points in the 3D geophysical scattered point data, although the filtered result becomes smooth, it will inevitably be affected by the distortion points; especially when the value of the distortion points is large, this effect will be further Intensify, and ultimately affect the effect of geological interpretation or 3D mapping

In addition, the median filtering method is less affected by the distortion point, but the median filtering method will change the position of the extremum and the extremum point, thus affecting the filtering effect

At present, the existing smoothing filtering methods are more or less affected by the distortion point. Even if the data of the distortion point is obviously improved after filtering, the data around the distortion point after filtering will also be polluted and affected by the distortion point, resulting in the filtering effect poor

[0005] Therefore, the existing filtering methods have the problem of poor filtering effect due to the influence of distortion points

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