WigglePy: a QGIS‑integrated workflow for converting raster legacy seismic profiles into SEG‑Y format
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Abstract
Legacy seismic reflection profiles are a critical subsurface resource, essential for seismotectonic and basin modeling, yet many remain accessible only as raster images. This paper presents WigglePy, an open‑source QGIS plugin that integrates the entire raster‑to‑SEG‑Y conversion workflow – from image calibration and cleaning to geometry assignment – within a single GIS environment. WigglePy provides an interactive interface utilizing fast extraction algorithms combined with a noise attenuation strategy. A synthetic benchmark shows that the implemented extraction strategies (Fast Fourier Bandpass, Savitzky‑Golay morphological reconstruction, and Wiener deconvolution) achieve reconstruction errors comparable to those of matrix‑based inversion methods, with improved computational performance. By integrating iterative quality control, spatial data management, and post‑extraction spectral spike filtering, WigglePy offers an efficient solution for the scientific rescue and revitalization of vintage seismic archives.
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