The CPCe (Coral Point Count with Excel extensions) program is a Windows-based software (PC use only) that provides a tool for the determination of coral cover using transect photographs. A specified number of spatially random points are distributed on a transect image and the features underlying the points are user-identified. Coverage statistics are then calculated and the results sent to Excel spreadsheets automatically.
Additionally, CPCe can be used for image calibration and area analysis of benthic features. Excel sheets are automatically generated to summarize the area calculations for each image.
Please use the following citation in published literature using CPCe:
Kohler, K.E. and S.M. Gill, 2006. Coral Point Count with Excel extensions (CPCe): A Visual Basic program for the determination of coral and substrate coverage using random point count methodology. Computers and Geosciences, Vol. 32, No. 9, pp. 1259-1269, DOI:10.1016/j.cageo.2005.11.009.
- Download the paper (1.3MB PDF)
Using CPCe is simple and straightforward. The main form is where the transect photograph is displayed, along with the coral codes. The main form has the following menu items:
Allows the specification of the rectangular area of interest on the frame image. This area can be marked manually, the entire frame image can be used, x and y offsets from the image edge can be specified, or an area of specific dimensions can be marked.
CPCe is released as copyrighted freeware. It is the National Coral Reef Institute's (NCRI) aim to provide a useful tool for researchers, coral reef managers, and individuals involved in coral reef monitoring, assessment, and restoration.
Due to its popularity, updating CPCe and providing support via email and telephone requires a significant amount of time and effort. If you have found CPCe to be useful for your institution's research, we encourage you to make a donation that will be used for the further development and support of CPCe.