locate_image {screenshot} | R Documentation |
Locate needle image position on a screenshot image.
Description
Locate needle image position on a screenshot image.
Usage
locate_image(
needle_image,
center = TRUE,
exact = TRUE,
timeout = 5,
bin_dir = ""
)
Arguments
needle_image |
A string of image file path or a cimg class object of imager library. |
center |
A logical. TRUE returns center position of needle_image. |
exact |
A logical. Check matching exactly or not. |
timeout |
A numeric for timeout seconds. |
bin_dir |
A string for directory name of screenshot.exe on Win. |
Value
A numeric pair of xy location.
Examples
if(interactive()){
sc <- screenshot()
if(sc != ""){
sc_image <- imager::load.image(sc)
w <- 100
h <- 80
pos_x <- 1
pos_y <- imager::height(sc_image) - h
needle <- hay2needle(sc_image, pos_x, pos_y, w, h)
(locate_image(needle)) # center location
pos <- locate_image(needle, center = FALSE)
found <- hay2needle(sc_image, pos[1], pos[2], w, h)
layout(c(1:3))
plot(sc_image)
plot(needle)
plot(found)
}
}
[Package screenshot version 0.9.0 Index]