Digital bed sediment camera, "eyeball"
![Man with a backpack on holds a special camera flat on the wet sandy beach to capture a digital photograph of sand grains.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/camerasurvey.png?itok=Npbg7D3e)
Detailed Description
Student Andrew Schwartz positions a camera to measure beach-sand grain size. The grain size parameters can be extracted from a digital image by an analysis of the variation and offset of the pixel intensities. This allowed us to process over 300 sediment samples in less than a day, whereas traditional sieving could take several months of work. A standard digital camera is housed in a custom waterproof casing for use in the coastal environment.
Sources/Usage
Public Domain.