denseness_total: Denseness for whole image
In bwimage: Describe Image Patterns in Natural Structures

Description Usage Arguments Value Author(s) References See Also Examples

Proportion of black pixels in relation to all pixels. It do not take into account transparent pixels (when present).

1	denseness_total(imagematrix)

imagematrix

The matrix to be analysed.

Proportion of black pixels in relation to all pixels. It do not take into account transparent pixels (when present).

Carlos Biagolini-Jr.

Zehm et al 2003 Multiparameter analysis of vertical vegetation structure based on digital image processing. Flora-Morphology, Distribution, Functional Ecology of Plants, 198: 142-160.

threshold_color

# Get a matrix from your image. Here  examples provided by bwimage package.

# I) Calculate vegetation denseness
bush<-system.file("extdata/bush.JPG",package ="bwimage")
bush_imagematrix<-threshold_color(bush,  "jpeg", "proportional",compress_rate = 0.1)
denseness_total(bush_imagematrix)

# II) Calculate canopy openness
# Convert image into binary matrix
canopy<-system.file("extdata/canopy.JPG",package ="bwimage")
canopy_matrix<-threshold_color(canopy,"jpeg", compress_method="proportional",compress_rate=0.1)
1-denseness_total(canopy_matrix) # canopy openness