imcoord: Coordinates as images

In imager: Image Processing Library Based on 'CImg'

Coordinates as images

Description

These functions return pixel coordinates for an image, as an image. All is made clear in the examples (hopefully)

Usage

Xc(im)

Yc(im)

Zc(im)

Cc(im)

Arguments

im

an image

Value

another image of the same size, containing pixel coordinates

Functions

• Xc(): X coordinates

• Yc(): Y coordinates

• Zc(): Z coordinates

• Cc(): C coordinates

See Also

as.cimg.function, pixel.grid

Examples

im <- imfill(5,5) #An image
Xc(im) #An image of the same size, containing the x coordinates of each pixel
Xc(im) %>% imrow(1)
Yc(im) %>% imrow(3) #y is constant along rows
Yc(im) %>% imcol(1)
#Mask bits of the boats image:
plot(boats*(Xc(boats) < 100))
plot(boats*(dnorm(Xc(boats),m=100,sd=30))) #Gaussian window

imager documentation built on May 29, 2024, 1:38 a.m.