scoreD15TCDS: Total Color Difference Score (TCDS) for the D-15 tests

In CVD: Color Vision Deficiencies

Description

scoreD15TCDS computes the Total Color Difference Score (TCDS) for the D-15 test, from Bowman's (1982). The input is either a vector of RGB colors or cap positions.

Usage

scoreD15TCDS(userD15colors=NULL,userD15values=NULL,
 distTable = get("BowmanTCDS", envir = environment()), 
D15colors = get("FarnsworthD15", envir = environment()))

Arguments

userD15colors	RGB colors chosen by tester
userD15values	position values chosen by tester
distTable	distance table - matrix with the color distances
D15colors	RGB colors for the CVD test

Value

TCDS	Total Color Difference Score (TCDS)

Author(s)

Jose Gama

References

Bowman's (1982) Total Color Difference Score (TCDS) for congenitally defective observers on the D-15 with enlarged tests. K.J. Bowman, A method for quantitative scoring of the Farnsworth Panel D-15, Acta Ophthalmologica, 60 (1982), pp. 907<e2><80><93>916

Examples

# a "perfect" score
## Not run: 
scoreD15TCDS(userD15values=1:15)
## End(Not run)

Example output

TCDS  CCI 
 117    1 

CVD documentation built on May 2, 2019, 1:58 p.m.