Replace part of an image with another
These replacement functions let you modify part of an image (for example, only the red channel). Note that cimg objects can also be treated as regular arrays and modified using the usual [] operator.
channel(x, ind) <- value R(x) <- value G(x) <- value B(x) <- value frame(x, ind) <- value
x |
an image to be modified |
ind |
an index |
value |
the image to insert |
channel<-: Replace image channel
R<-: Replace red channel
G<-: Replace green channel
B<-: Replace blue channel
frame<-: Replace image frame
imdraw
boats.cp <- boats #Set the green channel in the boats image to 0 G(boats.cp) <- 0 #Same thing, more verbose channel(boats.cp,2) <- 0 #Replace the red channel with noise R(boats.cp) <- imnoise(width(boats),height(boats)) #A new image with 5 frames tmp <- imfill(10,10,5) #Fill the third frame with noise frame(tmp,3) <- imnoise(10,10)
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