Seismic denoising method and system based on stationary Framelet transformation
The invention discloses an earthquake denoising method and system based on stationary Framelet transformation, belongs to the field of oil-gas exploration and earthquake data processing, and solves the problem of poor earthquake denoising effect in the prior art. The method comprises the following s...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses an earthquake denoising method and system based on stationary Framelet transformation, belongs to the field of oil-gas exploration and earthquake data processing, and solves the problem of poor earthquake denoising effect in the prior art. The method comprises the following steps: constructing a function and an inverse transformation function based on stationary Framelet transformation, stationary Framelet inverse transformation and Haar wavelet; transforming the obtained initial seismic record based on the function, and introducing an Lp (Lagrangian) norm, a Lagrangian multiplier item and a dual item to establish a seismic denoising objective function based on stationary Framelet transformation; updating the initial seismic record based on an inverse transformation function and an alternating direction multiplier method; and judging whether the values of the seismic record before and after updating meet a given condition, if so, taking the updated seismic record, the Lagrange multipli |
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