EFDR: Wavelet-Based Enhanced FDR for Signal Detection in Noisy Images

Enhanced False Discovery Rate (EFDR) is a tool to detect anomalies in an image. The image is first transformed into the wavelet domain in order to decorrelate any noise components, following which the coefficients at each resolution are standardised. Statistical tests (in a multiple hypothesis testing setting) are then carried out to find the anomalies. The power of EFDR exceeds that of standard FDR, which would carry out tests on every wavelet coefficient: EFDR choose which wavelets to test based on a criterion described in Shen et al. (2002). The package also provides elementary tools to interpolate spatially irregular data onto a grid of the required size. The work is based on Shen, X., Huang, H.-C., and Cressie, N. 'Nonparametric hypothesis testing for a spatial signal.' Journal of the American Statistical Association 97.460 (2002): 1122-1140.

Author
Andrew Zammit-Mangion [aut, cre], Hsin-Cheng Huang [aut]
Date of publication
2015-04-04 13:33:23
Maintainer
Andrew Zammit-Mangion <andrewzm@gmail.com>
License
GPL (>= 2)
Version
0.1.1
URLs

View on CRAN

Man pages

df.to.mat
Change xyz data-frame into a Z image
diagnostic.table
2x2 diagnostic table
EFDR
Wavelet-Based Enhanced FDR for Signal Detection in Noisy...
fdrpower
Power function
nei.efdr
Find wavelet neighbourhood
regrid
Regrid ir/regular data
test_image
Create a test image
wavelet-test
Test for anomalies in wavelet space
wav_th
Indices of wavelets exceeding a given threshold

Files in this package

EFDR
EFDR/inst
EFDR/inst/CITATION
EFDR/inst/doc
EFDR/inst/doc/EFDR_SST.Rmd
EFDR/inst/doc/EFDR_documents.html
EFDR/inst/doc/EFDR_documents.Rmd
EFDR/inst/doc/EFDR_SST.html
EFDR/inst/doc/EFDR.Rmd
EFDR/inst/doc/EFDR.html
EFDR/NAMESPACE
EFDR/R
EFDR/R/EFDR_functions.R
EFDR/R/EFDR.R
EFDR/vignettes
EFDR/vignettes/EFDR_documents.Rmd
EFDR/MD5
EFDR/build
EFDR/build/vignette.rds
EFDR/DESCRIPTION
EFDR/man
EFDR/man/regrid.Rd
EFDR/man/test_image.Rd
EFDR/man/EFDR.Rd
EFDR/man/diagnostic.table.Rd
EFDR/man/fdrpower.Rd
EFDR/man/wavelet-test.Rd
EFDR/man/nei.efdr.Rd
EFDR/man/df.to.mat.Rd
EFDR/man/wav_th.Rd