drawLine: Draw Lines on an 'Image'

In swarm-lab/Rvision: Computer Vision Library for R

Draw Lines on an Image

Description

drawLine draws lines over an Image object. This operation is destructive: it changes irreversibly the Image object and cannot be undone.

Usage

drawLine(image, pt1_x, pt1_y, pt2_x, pt2_y, color = "red", thickness = 1)

Arguments

image	An Image object.
pt1_x	A numeric value or vector representing the x coordinates of the first end of each line.
pt1_y	A numeric value or vector representing the y coordinates of the first end of each line.
pt2_x	A numeric value or vector representing the x coordinates of the second end of each line.
pt2_y	A numeric value or vector representing the y coordinates of the second end of each line.
color	A value or vector of any kind of R color specification compatible with col2bgr representing the color of each line (default: "red").
thickness	A numeric value or vector representing the thickness in pixels of each line (default: 1).

Value

This function does not return anything. It modifies image in place.

Author(s)

Simon Garnier, [e-mail]

See Also

Image, drawArrow

Examples

balloon <- image(system.file("sample_img/balloon1.png", package = "Rvision"))
drawLine(balloon, 1, 1, ncol(balloon), nrow(balloon), thickness = 3)

swarm-lab/Rvision documentation built on Feb. 7, 2024, 4:59 a.m.