GVFC: Calculates the raw Visual Fast Count (VFC) estimator of the...

Description Usage Arguments Value Author(s) References See Also

Description

The function considers the counts per segment and uses them sequentially until d positive counts are obtained or until all s segments have been considered. If we assume that u counts are used (of which some may be zero) then the visual fast count estimator is the mean over the u counts multiplied by s. This function is used by GVFCMOM to obtain the method of moments VFC estimator - which has reduced bias compared to the raw VFC estimator.

Usage

1
GVFC(counts, s, d) 

Arguments

counts

Vector of length s that contains a count for each segment

s

Number of segments

d

Number of positive segment counts needed before counting stops

Value

The raw VFC estimate of the segment mean

Author(s)

Jon Barry: jon.barry@cefas.co.uk

References

Barry J, Eggleton J, Ware S and Curtis M (2015) Generalizing Visual Fast Count Estimators for Underwater Video Surveys. Ecosphere. http://www.esajournals.org/doi/full/10.1890/ES15-00093.1

See Also

GVFCMOM



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