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Note: This module is deprecated and is retained for legacy workflow compatibility only.
Matches the amplitude envelope of an input 3D seismic cube to that of a reference (model) cube. For every sample in the volume, it computes the local RMS amplitude of both cubes within a configurable 3D window, then derives and applies a spatially varying correction factor equal to the ratio of the model RMS to the input RMS. The result is a corrected cube whose amplitude level follows the spatial trends of the model while preserving the relative character of the input seismic.
Both cubes must have identical dimensions (same inline, crossline, and time extents). Run after pre-processing and before amplitude-sensitive workflows such as AVO analysis or impedance inversion.
Two 3D seismic cubes in SEG-Y format with identical geometry: the input cube (to be corrected) and the model cube (reference defining the target amplitude level).
Full file path to the input 3D SEG-Y cube whose amplitude level will be corrected.
Full file path to the reference SEG-Y cube defining the target amplitude envelope. Must cover exactly the same inline, crossline, and time extent as the input cube. Typically a synthetic, a neighbouring survey, or a previously processed cube with known correct amplitudes.
Full file path for the corrected output cube in SEG-Y format. Specify a new file name to avoid overwriting the original input data.
Half-length of the RMS analysis window in the time direction (seconds). The RMS amplitude at each sample is computed over a gate extending this distance above and below the current sample. Default: 0.5 s. Larger values produce a smoother, longer-wavelength correction; smaller values make the correction more localised in time.
Half-width of the analysis window in both inline and crossline directions (number of traces), defining a square lateral footprint. Default: 10 traces. Larger values yield a spatially smoother correction, appropriate for gradual amplitude imbalances such as acquisition footprint. Smaller values preserve more lateral detail but are more sensitive to local amplitude variations.