Multi-Band Spectral Fusion — hsa_fusion • hyperspectaculR

Builds a colour composite by averaging three groups of bands rather than picking three single wavelengths. Averaging suppresses per-band sensor noise and yields smoother, more saturated images than a three-band composite, while remaining a straightforward and disclosable operation.

Usage

hsa_fusion(
  cube,
  red = NULL,
  green = NULL,
  blue = NULL,
  by = c("index", "wavelength"),
  stretch = c("percentile", "range", "none"),
  probs = c(0.02, 0.98)
)

Arguments

cube: An hsi_cube (from hyperspectR) or a 3-D array with dimensions (rows, cols, bands).
red, green, blue: Integer vectors of band indices, or numeric wavelengths in nm when by = "wavelength". NULL (default) splits the spectrum into three contiguous thirds, long wavelengths to red.
by: Either "index" (default) or "wavelength".
stretch: Contrast stretch: "percentile" (default), "range" or "none".
probs: Percentiles for stretch = "percentile". Default c(0.02, 0.98).

Value

A ggplot2 object.

Examples

cube <- hsa_demo_cube()
hsa_fusion(cube)