triangle: Triangle Thresholding Algorithm

In LFApp: Shiny Apps for Lateral Flow Assays

Triangle Thresholding Algorithm

Description

The function computes a background theshold of an image using the triangle algorithm.

Usage

triangle(image, offset = 0.2, breaks = 256)

Arguments

image	object of class Image from package EBImage.
offset	numeric, additional offset added to the computed threshold.
breaks	integer, number of breaks used in the histogram.

Details

The Triangle method is based on the histogram of the intensities. Based on the range of intensities and the maximum peak a threshold is determined. The method was proposed in Zack et al. (1977).

Value

numeric vector with the computed threshold.

Author(s)

Matthias Kohl [e-mail]

References

G.W. Zack, W. E. Rogers, and S. A. Latt (1977). Automatic measurement of sister chromatid exchange frequency. The journal of histochemistry and cytochemistry: official journal of the Histochemistry Society 25 (7): 741-53. https://doi.org/10.1177/25.7.70454.

Examples

library(EBImage)
x <- readImage(system.file("images", "sample.TIF", package="LFApp"))
triangle(x)

LFApp documentation built on May 29, 2024, 3:09 a.m.