Oysters R Documentation

Size of Oysters

Description

Comparing methods for measuring the size of oysters

Format

A data frame with 30 observations on the following 5 variables.

ID

ID number of each oyster

Weight

Weight (in grams)

Volume

Volume (in cubic centimeters)

ThreeD

Measurement from a 3D system (pixels)

TwoD

Measurement from a 2D cross-section (pixels)

Details

In 2001 engineers at an R&D lab Agri-Tech, Inc, in Woodstock, Virginia, designed a 3-D system that they hoped would improve on the existing 2-D system for measuring the size of oysters. The 3-D system used computer scanning to estimate an oyster volume, whereas the old 2-D system estimated a cross-sectional area. Data shows the result of both systems, as well as the actual weight and volume of each oyster used in calibration.

Source

Data found at JSE data archive: http://ww2.amstat.org/publications/jse/jse_data_archive.htm with the filenames of 30oysters. Contributors are G. Andy Chang, G. Jay Kerns, D. J. Lee, and Gary L. Stanek.

Original article is: Lee, D., Lane, R., and Chang, G., (2001) "Three-dimension Reconstruction for High-speed Volume Measurement," Proceedings of the International Society for Optical Engineering, Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology, Volume 4189, p.258-267.