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Day 2: Image Processing -- Tuesday 22 July 2025 14:00-18:00 UTC
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15:00-17:00 UTC - Workshop: Introduction to the Toolbox for River Velocimetry using Images from Aircraft (TRiVIA)
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Carl Legleiter (USGS) & Paul Kinzel (USGS)
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The Toolbox for River Velocimetry using Images from Aircraft (TRiVIA) provides a complete, end-to-end workflow for deriving spatially distributed velocity vectors from videos or image sequences, all within an accessible graphical user interface. TRiVIA includes modules for extracting and resampling frames, stabilizing and geo-referencing images, defining a region of interest, enhancing images, performing particle image velocimetry (PIV) with an efficient ensemble correlation algorithm, visualizing results, assessing accuracy, and exporting PIV output. In this session, the capabilities of the TRiVIA software will be illustrated through a tutorial based on an example data set collected from an uncrewed aircraft systems (UAS). The software is publicly available as a USGS scientific software product and can be obtained here: https://code.usgs.gov/wma/osd/trivia. The data to be used during the tutorial comes from a USGS ScienceBase data release. For additional information on TRiVIA, please refer to two journal articles that describe the software in greater detail (https://doi.org/10.1002/rra.4147 and https://doi.org/10.1002/rra.4333).
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This workshop will be live.
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17:00-18:00 UTC Breakout/Working Groups Sessions
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A traditional part of AEMON-J meetings in the past has been to openly discuss ideas for new, joint projects.
This time in the schedule is to bring up such ideas, perhaps inspired by the workshops earlier that day, and discuss.
If no such ideas are pitched, this time can also be used for small talk, networking, and other social activities.
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