ION Geophysical Corporation provides geoscience products, services, and solutions to the oil and gas industry worldwide. It operates through three segments: E&P Technology & Services, E&P Operations Optimization, and Ocean Bottom Services. The E&P Technology & Services segment offers services to manage the entire seismic process, from survey planning and design to data acquisition and management, to final subsurface imaging and reservoir characterization. This segment also provides data processing and imaging services to help its exploration and production customers for reducing exploration and production risk, evaluating and developing reservoirs, and increase production. The E&P Operations Optimization segment provides command and control software systems, related software and services for towed marine streamer and ocean bottom seismic operations, as well as for survey design. This segment also manufactures and repairs marine towed streamer acquisition and positioning systems, and analog geophone sensors. The Ocean Bottom Services segment offers survey design, planning, and optimization services to maximize seismic image quality, operational efficiency, and safety; superior imaging services; and data processing, interpretation, and reservoir services This segment also manufactures re-deployable ocean bottom cable seismic data acquisition systems. ION Geophysical Corporation markets and sells its services and products through direct sales force and third-party sales representatives. The company was formerly known as Input/Output, Inc. and changed its name to ION Geophysical Corporation in 2007. ION Geophysical Corporation was founded in 1968 and is headquartered in Houston, Texas.