Stereo-video surveys of demersal fish assemblages are widely used.
Article A field and video‐annotation guide for baited remote underwa...
Stereoscopic footages are used to assess fish-body size. A specialized software is needed.
The australian compagny SeaGIS offer a suite of software and hardware (calibration frame). https://www.seagis.com.au/index.html#about
SeaGIS looks really nice. Nevertheless it is expensive.
Do you know a free software that provide similar fonctionalities than SeaGIS ?
thank you