Source code for bruges.filters.convolve

"""
Convolution in n-dimensions.

:copyright: 2019 Agile Geoscience
:license: Apache 2.0
"""
import numpy as np
from bruges.util import apply_along_axis


[docs]def convolve(reflectivity, wavelet): """ Convolve n-dimensional reflectivity with a 1D wavelet or 2D wavelet bank. Args reflectivity (ndarray): The reflectivity trace, or 2D section, or volume. wavelet (ndarray): The wavelet, must be 1D function or a 2D wavelet 'bank'. If a wavelet bank, time should be on the last axis. """ # Compute the target shape of the final synthetic. outshape = wavelet.shape[:-1] + reflectivity.shape # Force wavelet and reflectivity to both be 2D. bank = np.atleast_2d(wavelet) reflectivity_2d = reflectivity.reshape((-1, reflectivity.shape[-1])) # Compute synthetic, which will always be 3D. syn = np.array([apply_along_axis(np.convolve, reflectivity_2d, w, mode='same') for w in bank]) return syn.reshape(outshape)
[docs]def apply_along_axis(func_1d, arr, *args, **kwargs): mapobj = map(lambda tr: func_1d(tr, *args, **kwargs), arr) return np.array(list(mapobj))