An underwater stereo-camera trap

摘要: Abstract This paper describes the design and deployment of a new type of underwater stereo camera capable triggering when animals are present in field view. Unobtrusive evaluation view for potential targets is achieved using far-red illumination invisible to most fishes. The triggered (TrigCam) system designed be low cost by incorporating off-the-shelf commercial computer components. It also incorporates several novel software hardware developments such as Cannon Hackers Development Kit which provides high degree control over cameras, Raspberry Pi computer-on-board module low-power, cost-efficient computing. innovative algorithm fine size intensity necessary trigger an image described detail. Stereo analysis estimates fish size, position, orientation provide quantitative data from images. Test deployments demonstrate operational capacity illustrate applications sampling marine organisms through example descriptions analytical methods, including process analysis. TrigCam intended open source project encourage continued development within research community, with information available internet posts.