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.

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.

Details

Image Dimensions: 581 x 763

Location Taken: San Francisco, CA, US