First arrival picking using image processing methods

A new methodology for picking refraction arrivals is proposed for the purpose of automatic and<br>accurate picking of large volumes of first break picks for refraction static analysis or geometry quality<br>control. Raw or processed shot records are processed through a conversion method that creates a<br>binary raster image that focuses the anomalous amplitude associated with the first arrival. Analysis has<br>demonstrated that this method can be robust with many types of data including those with large time<br>variances in the first arrivals due to elevations changes or near surface statics. The method is also<br>independent of the offset information for the traces so first arrival picking can be accomplished<br>independent of the geometry definition, and the resultant picks are ideal for traditional geometry<br>analysis methods.