The process of reconstructing digital seismic data from black and white paper displays has been used for a couple of decades. Usually, the data is scanned and the trace reconstructed from the scanned image.
But what if the original was a color representation of preserved amplitude data? A new process offered by SeiScan GeoData is capable of extracting the original true amplitude information from a color plot, and converting this into standard SEG-Y data. Dynamic range and seismic character are maintained and these data are then available for reprocessing or integration into existing workstation projects.
Following vectorizing, an automated process checks the pixel coloration at and around a particular trace and compares this within a user-defined color-hue chart. This allows for conversion of the vectorized data into amplitude equivalents.
Finally, a QC process compares the vector digital file with the analogue image, usually as a series of “patch” trials, where a number of conversion parameters are tested for the best reconstruction in several areas of the section. Once the vector file has been output, data may be plotted in the desired format. More from www.seiscan.com.
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