calc_relative_radius

Calculate the relative radius given a zenith angle and lens function. This is
known as the projection function.

Classify hemispherical
photographs of the plant canopy with algorithms specially developed for
such a task and well documented in
Díaz and Lencinas (2015) <doi:10.1109/lgrs.2015.2425931> and
Díaz and Lencinas (2018) <doi:10.1139/cjfr-2018-0006>. It supports
non-circular hemispherical photography, such as those acquired with
15mm lenses or with auxiliary fish-eye lenses attached to mobile devices.
For smartphone-based hemispherical photography see
Díaz (2023) <doi:10.1111/2041-210x.14059>. Most of the functions also
support restricted view photography.

Gast<c3><b3>n Mauro D<c3><ad>az

rcaiman

CAnopy IMage ANalysis

Gastón Mauro Díaz

calc_relative_radius function

<dl><dt>angle</dt>
<dd>Numeric vector. Zenith angles in degrees.</dd>
<dt>lens_coef</dt>
<dd>Numeric vector. Polynomial coefficients of the lens
projection function. See <code>calibrate_lens()</code>.</dd></dl>

Arguments

Calculate relative radius — calc_relative_radius

<dl>

<dt>angle</dt>
<dd>Numeric vector. Zenith angles in degrees.</dd>


<dt>lens_coef</dt>
<dd>Numeric vector. Polynomial coefficients of the lens
projection function. See <code>calibrate_lens()</code>.</dd>

</dl>

calc_relative_radius: Calculate relative radius

Description

Usage

Arguments

See Also