linearDetect: Linear detection
In measuRing: Detection and Control of Tree-Ring Widths on Scanned Image Sections

linearDetect

R Documentation

Linear detection

Description

Function for developing linear detection of ring borders.

Usage

linearDetect(smoothed, 
    origin = 0, darker = TRUE)

Arguments

`smoothed`	a data frame with `smoothed` grays such as that produced by `graySmoothed`.
`origin`	numeric. an `origin` in `smoothed` gray to find the ring borders.
`darker`	logical. If TRUE the algorithm uses the negative extremes on `smoothed` grays to detect the ring borders. If FALSE the possitive extremes are used.

Value

vector with column numbers in gray matrix of the detected ring borders (see grayDarker, and graySmoothed).

Author(s)

Wilson Lara <wilarhen@gmail.com> [aut, cre] (<https://orcid.org/0000-0003-3527-1380>), Carlos Sierra [aut] (<https://orcid.org/0000-0003-0009-4169>), Felipe Bravo [aut] (<https://orcid.org/0000-0001-7348-6695>)

Examples

## (not run) Read one image section in package measuRing:
image1 <- system.file("P105_a.tif", package="measuRing")    
## (not run) smoothed gray:
smoothed <- graySmoothed(image1)
## linear detection:
borders <- linearDetect(smoothed)
str(borders)

measuRing documentation built on April 12, 2025, 1:58 a.m.