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Soule’s communication skills came in handy when he joined the Navy during World War II, serving as a radio and telegraph operator. Later, his experience helped him get his first job on the railroad, working as a telegraph operator at the Lewiston Station.

Through the years, Soule worked at stations in Gardiner, Augusta and Waterville, where hundreds of college students would flood the station at the start of each holiday break, carrying luggage and looking for tickets home.

When he retired at age 60, he had been the station agent at Yarmouth Junction for about 15 years. He remembers seeing Canadian National Railroad trains hauling a hundred cars filled with potatoes grown in northern Maine.

As a railroad employee, Soule and his family were able to travel across the United Statesand the Research Training Group GRK 1564 “Imaging New Modalities”, University of Siegen, Siegen, Germany, where he pursued his Ph.D. degree with main focus on applying Compressive Sensing techniques to improve the quality of Time-of-Flight (ToF) Imaging systems based on the Photonic Mixer Device (PMD) until its conclusion in 2016. Since then he leads the research group on Compressive Sensing for the Photonic Mixer Device at ZESS.

Miguel Heredia was one of the recipients of the 2006 Academic Excellence Prices, awarded by the Government of Galicia, Spain, in acknowledgment of outstanding academic performance. His current research interests include computer vision, depth sensing, with focus on ToF imaging sensors, PMD technology, Compressive Sensing, coding strategies, and different aspects of signal processing. He is a member of the IEEE and ITG/VDE