1. A method comprising: obtaining, via a processor, a borehole image derived from a downhole tool in a wellbore of a geological formation; identifying, via the processor, one or more patches that correspond to sediment particles on the borehole image; computing, via the processor, one or more characteristics for each of the one or more patches, wherein the one or more characteristics comprise long/short axis length, size, roundness, sphericity, orientation, or some combination thereof; displaying a visual representation for each of the one or more characteristics; and computing, via the processor, a paleocurrent direction based at least in part on the orientation of the one or more patches.