5.1.2.2.2.1.2. eqcorrscan.core.match_filter.helpers.normxcorr2¶
- eqcorrscan.core.match_filter.helpers.normxcorr2(template, image)[source]¶
Thin wrapper to eqcorrscan.utils.correlate functions.
- Parameters:
template (numpy.ndarray) – Template array
image (numpy.ndarray) – Image to scan the template through. The order of these matters, if you put the template after the image you will get a reversed correlation matrix
- Returns:
New
numpy.ndarray
of the correlation values for the correlation of the image with the template.- Return type:
Note
If your data contain gaps these must be padded with zeros before using this function. The eqcorrscan.utils.pre_processing functions will provide gap-filled data in the appropriate format. Note that if you pad your data with zeros before filtering or resampling the gaps will not be all zeros after filtering. This will result in the calculation of spurious correlations in the gaps.